Source Code

These source-code files were derived originally from the scan from MIT's Dibner Institute's now-discontinued website titled "History of Recent Science and Technology", which in turn was originally created by Gary Neff, though his high-quality scans were unfortunately reduced in legibility when presented online. The markings on the front of the printout imply that it was the original AGC developer Norm Brodeur's copy. A scan by Ron Burkey has superceded it, made from a more-legible copy from the collection of original AGC developer Fred Martin. The source code was transcribed from those images by Ron Burkey. Note that the page images presented online are of reduced quality, and that higher-quality images are available. Report any conversion errors or legibility problems in page images to info@sandroid.org. Notations on the program listing read, in part:

	ASSEMBLE REVISION 249 OF AGC PROGRAM COLOSSUS BY NASA 2021111-041
	20'35 OCT. 28,1968
Note that the date is the date of the printout, not the date of the program revision.

019701,000002:                                                                                                  ## Copyright:   Public domain.
019702,000003:                                                                                                  ## Filename:    P34-35_P74-75.agc
019703,000004:                                                                                                  ## Purpose:     Part of the source code for Colossus, build 249.
019704,000005:                                                                                                  ##              It is part of the source code for the Command Module's (CM)
019705,000006:                                                                                                  ##              Apollo Guidance Computer (AGC), possibly for Apollo 8 and 9.
019706,000007:                                                                                                  ## Assembler:   yaYUL
019707,000008:                                                                                                  ## Reference:   pp. 454-497 of 1701.pdf.
019708,000009:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
019709,000010:                                                                                                  ## Website:     www.ibiblio.org/apollo.
019710,000011:                                                                                                  ## Mod history: 08/11/04 RSB.   Began adapting from corresponding Luminary131
019711,000012:                                                                                                  ##                              source file.
019712,000013:                                                                                                  ##              2010-08-29 JL   Added missing comment characters. 
019713,000014:                                                                                                  ##              2011-05-07 JL   Removed workaround.
019714,000015: 
019715,000016:                                                                                                  ## The contents of the "Colossus249" files, in general, are transcribed 
019716,000017:                                                                                                  ## from a scanned document obtained from MIT's website,
019717,000018:                                                                                                  ## http://hrst.mit.edu/hrs/apollo/public/archive/1701.pdf.  Notations on this
019718,000019:                                                                                                  ## document read, in part:
019719,000020:                                                                                                  ##
019720,000021:                                                                                                  ##      Assemble revision 249 of AGC program Colossus by NASA
019721,000022:                                                                                                  ##      2021111-041.  October 28, 1968.  
019722,000023:                                                                                                  ##
019723,000024:                                                                                                  ##      This AGC program shall also be referred to as
019724,000025:                                                                                                  ##                              Colossus 1A
019725,000026:                                                                                                  ##
019726,000027:                                                                                                  ##      Prepared by
019727,000028:                                                                                                  ##                      Massachusetts Institute of Technology
019728,000029:                                                                                                  ##                      75 Cambridge Parkway
019729,000030:                                                                                                  ##                      Cambridge, Massachusetts
019730,000031:                                                                                                  ##      under NASA contract NAS 9-4065.
019731,000032:                                                                                                  ##
019732,000033:                                                                                                  ## Refer directly to the online document mentioned above for further information.
019733,000034:                                                                                                  ## Please report any errors (relative to 1701.pdf) to info@sandroid.org.
019734,000035:                                                                                                  ##
019735,000036:                                                                                                  ## In some cases, where the source code for Luminary 131 overlaps that of 
019736,000037:                                                                                                  ## Colossus 249, this code is instead copied from the corresponding Luminary 131
019737,000038:                                                                                                  ## source file, and then is proofed to incorporate any changes.
019738,000039: 

Page 454

019740,000041:                                                                                                  #  TRANSFER PHASE INITITIATION (TPI) PROGRAMS (P34 AND P74)
019741,000042:                                                                                                  #  MOD NO -1                     LOG SECTION -- P32-P35, P72-P75
019742,000043:                                                                                                  #  MOD BY WHITE, P.              DATE: 1 JUNE 67
019743,000044: 
019744,000045:                                                                                                  #  PURPOSE
019745,000046:                                                                                                  #        (1)     TO CALCULATE THE REQUIRED DELTA V AND OTHER INITIAL CONDITIONS
019746,000047:                                                                                                  #                REQUIRED BY THE ACTIVE VEHICLE FOR EXECUTION OF THE TRANSFER
019747,000048:                                                                                                  #                PHASE INITITATION (TPI) MANEUVER, GIVEN --
019748,000049:                                                                                                  #                (A)     TIME OF IGNITION TIG (TPI) OR THE ELEVATION ANGLE (E) OF
019749,000050:                                                                                                  #                        THE ACTIVE/PASSIVE VEHICLE LOS AT TIG (TPI).
019750,000051:                                                                                                  #                (B)     CENTRAL ANGLE OF TRANSFER (CENTANG) FROM TIG (TPI) TO
019751,000052:                                                                                                  #                        INTERCEPT TIME (TIG (TPF)).
019752,000053:                                                                                                  #        (2)     TO CALCULATE TIG (TPI) GIVEN E OR E GIVEN TIG (TPI).
019753,000054:                                                                                                  #        (3)     TO CALCULATE THESE PARAMETERS BASED UPON MANEUVER DATA
019754,000055:                                                                                                  #                APPROVED AND KEYED INTO THE DSKY BY THE ASTRONAUT.
019755,000056:                                                                                                  #        (4)     TO DISPLAY TO THE ASTRONAUT AND THE GROUND CERTAIN DEPENDENT
019756,000057:                                                                                                  #                VARIABLES ASSOCIATED WITH THE MANEUVER FOR APPROVAL BY THE
019757,000058:                                                                                                  #                ASTRONAUT/GROUND.
019758,000059:                                                                                                  #        (5)     TO STORE THE TPI TARGET PARAMETERS FOR USE BY THE DESIRED
019759,000060:                                                                                                  #                THRUSTING PROGRAM.
019760,000061: 
019761,000062:                                                                                                  #  ASSUMPTIONS
019762,000063:                                                                                                  #        (1)     LM ONLY -- THIS PROGRAM IS BASED UPON PREVIOUS COMPLETION OF
019763,000064:                                                                                                  #                THE CONSTANT DELTA ALTITUDE (CDH) PROGRAM (P33/P73).
019764,000065:                                                                                                  #                THEREFORE --
019765,000066:                                                                                                  #                (A)     AT A SELECTED TPI TIME (NOW IN STORAGE) THE LINE OF SIGHT
019766,000067:                                                                                                  #                        BETWEEN THE ACTIVE AND PASSIVE VEHICLES WAS SELECTED TO BE
019767,000068:                                                                                                  #                        A PRESCRIBED ANGLE (E) (NOW IN STORAGE) FROM THE
019768,000069:                                                                                                  #                        HORIZONTAL PLANE DEFINED BY THE ACTIVE VEHICLE POSITION.
019769,000070:                                                                                                  #                (B)     THE TIME BETWEEN CDH IGNITION AND TPI IGNITION WAS
019770,000071:                                                                                                  #                        COMPUTED TO BE GREATER THAN 10 MINUTES.
019771,000072:                                                                                                  #                (C)     THE VARIATION OF TEH ALTITUDE DIFFERENCE BETWEEN THE
019772,000073:                                                                                                  #                        ORBITS WAS MINIMIZED.
019773,000074:                                                                                                  #                (D)     THE PERICENTER ALTITUDES OF ORBITS FOLLOWING CSI AND
019774,000075:                                                                                                  #                        CDH WERE COMPUTED TO BE GREATER THAN 35,000 FT FOR LUNAR

Page 455

019776,000077:                                                                                                  #                        ORBIT OR 85 NM FOR EARTH ORBIT.
019777,000078:                                                                                                  #                (E)     THE CSI AND CDH MANEUVERS WERE ASSUMED TO BE PARALLEL TO
019778,000079:                                                                                                  #                        THE PLANE OF THE PASSIVE VEHICLE ORBIT.  HOWEVER, CREW
019779,000080:                                                                                                  #                        MODIFICATION OF DELTA V (LV) COMPONENTS MAY HAVE RESULTED
019780,000081:                                                                                                  #                        IN AN OUT-OF-PLANE MANEUVER.
019781,000082:                                                                                                  #        (2)     STATE VECTOR UPDATED BY P27 ARE DISALLOWED DURING AUTOMATIC
019782,000083:                                                                                                  #                STATE VECTOR UPDATING INITIATED BY P20 (SEE ASSUMPTION (4)).
019783,000084:                                                                                                  #        (3)     THIS PROGRAM MUST BE DONE OVER A TRACKING STATION FOR REAL
019784,000085:                                                                                                  #                TIME GROUND PARTICIPATION IN DATA INPUT AND OUTPUT.  COMPUTED
019785,000086:                                                                                                  #                VARIABLES MAY BE STORED FOR LATER VERIFICATION BY THE GROUND.
019786,000087:                                                                                                  #                THESE STORAGE CAPABILITIES ARE LIMITED ONLY TO THE PARAMETERS
019787,000088:                                                                                                  #                FOR ONE THRUSTING MANEUVER AT A TIME EXCEPT FOR CONCENTRIC
019788,000089:                                                                                                  #                FLIGHT PLAN MANEUVER SEQUENCES.
019789,000090:                                                                                                  #        (4)     THE RENDEZVOUS RADAR MAY OR MAY NOT BE USED TO UPDATE THE LM
019790,000091:                                                                                                  #                OR CSM STATE VECTORS FOR THIS PROGRAM.  IF RADAR USE IS
019791,000092:                                                                                                  #                DESIRED THE RADAR WAS TURNED ON AND LOCKED ON THE CSM BY
019792,000093:                                                                                                  #                PREVIOUS SELECTION OF P20.  RADAR SIGHTING MARKS WILL BE MADE
019793,000094:                                                                                                  #                AUTOMATICALLY APPROXIMATELY ONCE A MINUTE WHEN ENABLED BY THE
019794,000095:                                                                                                  #                TRACK AND UPDATE FLAGS (SEE P20).  THE RENDEZVOUS TRACKING
019795,000096:                                                                                                  #                MARK COUNTER IS ZEROED BY TEH SELECTION OF P20 AND AFTER EACH
019796,000097:                                                                                                  #                THRUSTING MANEUVER.
019797,000098:                                                                                                  #        (5)     THE ISS NEED NOT BE ON TO COMPLETE THIS PROGRAM.
019798,000099:                                                                                                  #        (6)     THE OPERATION OF THE PROGRAM UTILIZES THE FOLLOWING FLAGS --
019799,000100: 
019800,000101:                                                                                                  #                        ACTIVE VEHICLE FLAG -- DESIGNATES THE VEHICLE WHICH IS
019801,000102:                                                                                                  #                        DOING RENDEZVOUS THRUSTING MANEUVERS TO THE PROGRAM WHICH
019802,000103:                                                                                                  #                        CALCULATES THE MANEUVER PARAMETERS.  SET AT THE START OF
019803,000104:                                                                                                  #                        EACH RENDEZVOUS PRE-THRUSTING PROGRAM.
019804,000105: 
019805,000106:                                                                                                  #                        FINAL FLAG -- SELECTS FINAL PROGRAM DISPLAYS AFTER CREW HAS
019806,000107:                                                                                                  #                        SELECTED THE FINAL MANEUVER COMPUTATION CYCLE.
019807,000108: 
019808,000109:                                                                                                  #                        EXTERNAL DELTA V FLAG -- DESIGNATES THE TYPE OF STEERING
019809,000110:                                                                                                  #                        REQUIRED FOR EXECUTION OF THIS MANEUVER BY THE THRUSTING
019810,000111:                                                                                                  #                        PROGRAM SELECTED AFTER COMPLETION OF THIS PROGRAM.
019811,000112: 
019812,000113:                                                                                                  #        (7)     ONCE THE PARAMETERS REQUIRED FOR COMPUTATION OF THE MANEUVER
019813,000114:                                                                                                  #                HAVE BEEN COMPLETELY SPECIFIED, TEH VALUE OF THE ACTIVE
019814,000115:                                                                                                  #                VEHICLE CENTRAL ANGLE OF TRANSFER IS COMPUTED AND STURED.
019815,000116:                                                                                                  #                THIS NUMBER WILL BE AVAILABLE FOR DISPLAY TO THE ASTRONAUT
019816,000117:                                                                                                  #                THROUGH THE USE OF V06N52.
019817,000118: 
019818,000119:                                                                                                  #                THE ASTRONAUT WILL CALL THIS DISPLAY TO VERIFY THAT THE
019819,000120:                                                                                                  #                CENTRAL ANGLE OF TRANSFER OF THE ACTIVE VEHICLE IS NOT WITHIN

Page 456

019821,000122:                                                                                                  #                170 TO 190 DEGREES.  IF THE ANGLE IS WITHIN THIS ZONE THE
019822,000123:                                                                                                  #                ASTRONAUT SHOULD REASSES THE INPUT TARGETING PARAMETERS BASED
019823,000124:                                                                                                  #                UPON DELTA V AND EXPECTED MANEUVER TIME.
019824,000125:                                                                                                  #        (8)     THIS PROGRAM IS SELECTED BY TEH ASTRONAUT BY DSKY ENTRY --
019825,000126: 
019826,000127:                                                                                                  #                        P34 IF THIS VEHICLE IS ACTIVE VEHICLE.
019827,000128: 
019828,000129:                                                                                                  #                        P74 IF THIS VEHICLE IS PASSIVE VEHICLE.
019829,000130: 
019830,000131:                                                                                                  #  INPUT
019831,000132:                                                                                                  #        (1)     TTPI    TIME OF THE TPI MANEUVER.
019832,000133:                                                                                                  #        (2)     ELEV    DESIRED LOS ANGLE AT TPI
019833,000134:                                                                                                  #        (3)     CENTANG ORBITAL CENTRAL ANGLE OF THE PASSIVE VEHICLE DURING
019834,000135:                                                                                                  #                        TRANSFER FROM TPI TO TIME OF INTERCEPT
019835,000136: 
019836,000137:                                                                                                  #  OUTPUT
019837,000138:                                                                                                  #        (1)     TRKMKCNT        NUMBER OF MARKS
019838,000139:                                                                                                  #        (2)     TTOGO           TIME TO GO
019839,000140:                                                                                                  #        (3)     +MGA            MIDDLE GIMBAL ANGLE
019840,000141:                                                                                                  #        (4)     TTPI            COMPUTED TIME OF TPI MANEUVER
019841,000142:                                                                                                  #                 OR
019842,000143:                                                                                                  #                ELEV            COMPUTED LOS ANGLE AT TPI
019843,000144:                                                                                                  #        (5)     POSTTPI         PERIGEE ALTITUDE AFTER THE TPI MANEUVER
019844,000145:                                                                                                  #        (6)     DELVTPI         MAGNITUDE OF DELTA V AT TPI
019845,000146:                                                                                                  #        (7)     DELVTPF         MAGNITUDE OF DELTA V AT INTERCEPT
019846,000147:                                                                                                  #        (8)     DVLOS           DELTA VELOCITY AT TPI -- LINE OF SIGHT
019847,000148:                                                                                                  #        (9)     DELVLVC         DELTA VELOCITY AT TPI -- LOCAL VERTICAL COORDINATES
019848,000149: 
019849,000150:                                                                                                  #  DOWNLINK
019850,000151:                                                                                                  #        (1)     TTPI            TIME OF TPI MANEUVER
019851,000152:                                                                                                  #        (2)     TIG             TIME OF TPI MANEUVER
019852,000153:                                                                                                  #        (3)     ELEV            DESIRED LOS ANGLE AT TPI
019853,000154:                                                                                                  #        (4)     CENTANG         ORBITAL CENTRAL ANGLE OF THE PASSIVE VEHICLE DURING
019854,000155:                                                                                                  #                                TRANSFER FROM TPI TO TIME OF INTERCEPT
019855,000156:                                                                                                  #        (5)     DELVEET3        DELTA VELOCITY AT TPI -- REFERENCE COORDINATES
019856,000157:                                                                                                  #        (6)     TPASS4          TIME OF INTERCEPT
019857,000158: 
019858,000159:                                                                                                  #  COMMUNICATION TO THRUSTING PROGRAMS
019859,000160:                                                                                                  #        (1)     TIG             TIME OF THE TPI MANEUVER
019860,000161:                                                                                                  #        (2)     RTARG           OFFSET TARGET POSITION
019861,000162:                                                                                                  #        (3)     TPASS4          TIME OF INTERCEPT
019862,000163:                                                                                                  #        (4)     XDELVFLG        RESET TO INDICATE LAMBERT (AIMPOINT) VG COMPUTATION
019863,000164: 
019864,000165:                                                                                                  #  SUBROUTINES USED
019865,000166:                                                                                                  #        AVFLAGA

Page 457

019867,000168:                                                                                                  #        AVFLAGP
019868,000169:                                                                                                  #        VNP00H
019869,000170:                                                                                                  #        DISPLAYE
019870,000171:                                                                                                  #        SELECTMU
019871,000172:                                                                                                  #        PRECSET
019872,000173:                                                                                                  #        S33/34.1
019873,000174:                                                                                                  #        ALARM
019874,000175:                                                                                                  #        BANKCALL
019875,000176:                                                                                                  #        GOFLASH
019876,000177:                                                                                                  #        GOTOP00H
019877,000178:                                                                                                  #        TIMETHET
019878,000179:                                                                                                  #        S34/35.2
019879,000180:                                                                                                  #        PERIAPO1
019880,000181:                                                                                                  #        SHIFTR1
019881,000182:                                                                                                  #        S34/35.5
019882,000183:                                                                                                  #        VN1645
019883,000184: 
019884,000185: 35,2000                                           SETLOC   CSI/CDH                               
019885,000186: 35,2000                                           BANK                                           
019886,000187: 35,2000  E4,1770                                  EBANK=   SUBEXIT                               
019887,000188: 35,2000                                           COUNT    35/P3474                              
019888,000189: 35,2000           03726        P34                TC       AVFLAGA                               
019889,000190: 35,2001           02003                           TC       P34/P74A                              
019890,000191: 35,2002           03741        P74                TC       AVFLAGP                               
019891,000192: 35,2003           03746        P34/P74A           TC       P20FLGON                              #  SET UPDATFLG, TRACKFLG
019892,000193: 35,2004           33125                           CAF      V06N37                                #  TTPI
019893,000194: 35,2005           03114                           TC       VNP00H                                
019894,000195: 35,2006           03073                           TC       DISPLAYE                              #  ELEV AND CENTANG
019895,000196: 35,2007           06006                           TC       INTPRET                               
019896,000197: 35,2010           71214                           CLEAR    DLOAD                                 
019897,000198: 35,2011           01270                                    ETPIFLAG                              
019898,000199: 35,2012           03663                                    TTPI                                  
019899,000200: 35,2013           17413                           STODL    TIG                                   
019900,000201: 35,2014           03744                                    ELEV                                  
019901,000202: 35,2015           43054                           BZE      SET                                   
019902,000203: 35,2016           72020                                    P34/P74B                              
019903,000204: 35,2017           01070                                    ETPIFLAG                              
019904,000205: 35,2020           77624        P34/P74B           CALL                                           
019905,000206: 35,2021           10716                                    SELECTMU                              
019906,000207: 35,2022                        DELELO             EQUALS   26D                                   
019907,000208: 35,2022           43145        P34/P74C           DLOAD    SET                                   
019908,000209: 35,2023           15332                                    ZEROVECS                              
019909,000210: 35,2024           03461                                    ITSWICH                               
019910,000211: 35,2025           43014                           BON      CLEAR                                 
019911,000212: 35,2026           01310                                    ETPIFLAG                              
019912,000213: 35,2027           72031                                    SWCHSET                               
019913,000214: 35,2030           03661                                    ITSWICH                               
019914,000215: 35,2031           02364        SWCHSET            STORE    NOMTPI                                
019915,000216: 35,2032           43345        INTLOOP            DLOAD    DAD                                   

Page 458

019917,000218: 35,2033           03663                                    TTPI                                  
019918,000219: 35,2034           02364                                    NOMTPI                                
019919,000220: 35,2035           34041                           STCALL   TDEC1                                 
019920,000221: 35,2036           45354                                    PRECSET                               
019921,000222: 35,2037           77624                           CALL                                           
019922,000223: 35,2040           72212                                    S33/34.1                              
019923,000224: 35,2041           77454                           BZE      EXIT                                  
019924,000225: 35,2042           72053                                    SWCHCLR                               
019925,000226: 35,2043           05537                           TC       ALARM                                 
019926,000227: 35,2044           00611                           OCT      611                                   
019927,000228: 35,2045           34743                           CAF      V05N09                                
019928,000229: 35,2046           04555                           TC       BANKCALL                              
019929,000230: 35,2047           20624                           CADR     GOFLASH                               
019930,000231: 35,2050           04106                           TC       GOTOP00H                              
019931,000232: 35,2051           02003                           TC       P34/P74A                              #  PROCEED
019932,000233: 35,2052           02043                           TC       -7                                    #  V32
019933,000234: 
019934,000235: 35,2053           43014        SWCHCLR            BONCLR   BON                                   
019935,000236: 35,2054           03601                                    ITSWICH                               
019936,000237: 35,2055           72032                                    INTLOOP                               
019937,000238: 35,2056           01310                                    ETPIFLAG                              
019938,000239: 35,2057           72063                                    P34/P74D                              #  DISPLAY TTPI
019939,000240: 35,2060           77776                           EXIT                                           
019940,000241: 35,2061           03073                           TC       DISPLAYE                              #  DISPLAY ELEV AND CENTANG
019941,000242: 35,2062           02066                           TC       P34/P74E                              
019942,000243: 35,2063           77776        P34/P74D           EXIT                                           
019943,000244: 35,2064           33125                           CAF      V06N37                                #  TTPI
019944,000245: 35,2065           03114                           TC       VNP00H                                
019945,000246: 35,2066           06006        P34/P74E           TC       INTPRET                               
019946,000247: 35,2067           71201                           SETPD    DLOAD                                 
019947,000248: 35,2070           00001                                    0D                                    
019948,000249: 35,2071           03746                                    RTX1                                  
019949,000250: 35,2072           14047                           STODL    X1                                    
019950,000251: 35,2073           03754                                    CENTANG                               
019951,000252: 35,2074           71406                           PUSH     COS                                   
019952,000253: 35,2075           16734                           STODL    CSTH                                  
019953,000254: 35,2076           77756                           SIN                                            
019954,000255: 35,2077           26732                           STOVL    SNTH                                  
019955,000256: 35,2100           03554                                    RPASS3                                
019956,000257: 35,2101           77657                           VSR*                                           
019957,000258: 35,2102           57176                                    0,2                                   
019958,000259: 35,2103           26657                           STOVL    RVEC                                  
019959,000260: 35,2104           03562                                    VPASS3                                
019960,000261: 35,2105           43057                           VSR*     SET                                   
019961,000262: 35,2106           57176                                    0,2                                   
019962,000263: 35,2107           03466                                    RVSW                                  
019963,000264: 35,2110           36746                           STCALL   VVEC                                  
019964,000265: 35,2111           24737                                    TIMETHET                              
019965,000266: 35,2112           77745                           DLOAD                                          
019966,000267: 35,2113           03663                                    TTPI                                  

Page 459

019968,000269: 35,2114           03503                           STORE    INTIME                                #  FOR INITVEL
019969,000270: 35,2115           77615                           DAD                                            
019970,000271: 35,2116           00037                                    T                                     #  RENDEZVOUS TIME
019971,000272: 35,2117           37656                           STCALL   TPASS4                                #  FOR INITVEL
019972,000273: 35,2120           72534                                    S34/35.2                              
019973,000274: 35,2121           51575                           VLOAD    ABVAL                                 
019974,000275: 35,2122           03646                                    DELVEET3                              
019975,000276: 35,2123           26635                           STOVL    DELVTPI                               
019976,000277: 35,2124           03640                                    VPASS4                                
019977,000278: 35,2125           51451                           VSU      ABVAL                                 
019978,000279: 35,2126           03620                                    VTPRIME                               
019979,000280: 35,2127           26637                           STOVL    DELVTPF                               
019980,000281: 35,2130           03540                                    RACT3                                 
019981,000282: 35,2131           45115                           PDVL     CALL                                  
019982,000283: 35,2132           03612                                    VIPRIME                               
019983,000284: 35,2133           45312                                    PERIAPO1                              
019984,000285: 35,2134           77624                           CALL                                           
019985,000286: 35,2135           45422                                    SHIFTR1                               
019986,000287: 35,2136           16641                           STODL    POSTTPI                               
019987,000288: 35,2137           03663                                    TTPI                                  
019988,000289: 35,2140           03413                           STORE    TIG                                   
019989,000290: 35,2141           77776                           EXIT                                           
019990,000291: 35,2142           33127                           CAF      V06N58                                
019991,000292: 35,2143           03114                           TC       VNP00H                                
019992,000293: 35,2144           06006                           TC       INTPRET                               
019993,000294: 35,2145           77624                           CALL                                           
019994,000295: 35,2146           72742                                    S34/35.5                              
019995,000296: 35,2147           77624                           CALL                                           
019996,000297: 35,2150           73005                                    VN1645                                
019997,000298: 35,2151           77650                           GOTO                                           
019998,000299: 35,2152           72022                                    P34/P74C                              
019999,000300: 

Page 460

020001,000302:                                                                                                  #  RENDEZVOUS MID-COURSE MANEUVER PROGRAMS (P35 AND P75)
020002,000303:                                                                                                  #  MOD NO -1                     LOG SECTION -- P32-P35, P72-P75
020003,000304:                                                                                                  #  MOD BY WHITE, P.              DATE:  1 JUNE 67
020004,000305: 
020005,000306:                                                                                                  #  PURPOSE
020006,000307:                                                                                                  #        (1)     TO CALCULATE THE REQUIRED DELTA V AND OTHER INITIAL CONDITIONS
020007,000308:                                                                                                  #                REQUIRED BY THE ACTIVE VEHICLE FOR EXECUTION OF THE NEXT
020008,000309:                                                                                                  #                MID-COURSE CORRECTION OF THE TRANSFER PHASE OF AN ACTIVE
020009,000310:                                                                                                  #                VEHICLE RENDEZVOUS.
020010,000311:                                                                                                  #        (2)     TO DISPLAY TO THE ASTRONAUT AND THE GROUND CERTAIN DEPENDENT
020011,000312:                                                                                                  #                VARIABLES ASSOCIATED WITH THE MANEUVER FOR APPROVAL BY THE
020012,000313:                                                                                                  #                ASTRONAUT/GROUND.
020013,000314:                                                                                                  #        (3)     TO STORE THE TPM TARGET PARAMETERS FOR USE BY THE DESIRED
020014,000315:                                                                                                  #                THRUSTING PROGRAM.
020015,000316: 
020016,000317:                                                                                                  #  ASSUMPTIONS
020017,000318:                                                                                                  #        (1)     THE ISS NEED NOT BE ON TO COMPLETE THIS PROGRAM.
020018,000319:                                                                                                  #        (2)     STATE VECTOR UPDATES BY P27 ARE DISALLOWED DURING AUTOMATIC
020019,000320:                                                                                                  #                STATE VECTOR UPDATING INITIATED BY P20 (SEE ASSUMPTION (3)).
020020,000321:                                                                                                  #        (3)     THE RENDEZVOUS RADAR IS ON AND IS LOCKED ON THE CSM.  THIS WAS
020021,000322:                                                                                                  #                DONE DURING PREVIOUS SELECTION OF P20.  RADAR SIGHTING MARKS
020022,000323:                                                                                                  #                WILL BE MADE AUTOMATICALLY APPROXIMATELY ONCE A MINUTE WHEN
020023,000324:                                                                                                  #                ENABLED BY THE TRACK AND UPDATE FLAGS (SEE P20).  THE
020024,000325:                                                                                                  #                RENDEZVOUS TRACKING MARK COUNTER IS ZEROED BY THE SELECTION OF
020025,000326:                                                                                                  #                P20 AND AFTER EACH THRUSTING MANEUVER.
020026,000327:                                                                                                  #        (4)     THE OPERATION OF THE PROGRAM UTILIZES THE FOLLOWING FLAGS --
020027,000328: 
020028,000329:                                                                                                  #                        THE ACTIVE VEHICLE FLAG -- DESIGNATES THE VEHICLE WHICH IS
020029,000330:                                                                                                  #                        DOING RENDEZVOUS THRUSTING MANEUVERS TO THE PROGRAM WHICH
020030,000331:                                                                                                  #                        CALCULATES THE MANEUVER PARAMETERS.  SET AT THE START OF
020031,000332:                                                                                                  #                        EACH RENDEZVOUS PRE-THRUSTING PROGRAM.
020032,000333: 
020033,000334:                                                                                                  #                        FINAL FLAG -- SELECTS FINAL PROGRAM DISPLAYS AFTER CREW HAS
020034,000335:                                                                                                  #                        SELECTED THE FINAL MANEUVER COMPUTATION CYCLE.
020035,000336: 
020036,000337:                                                                                                  #                        EXTERNAL DELTA V FLAG -- DESIGNATES THE TYPE OF STEERING
020037,000338:                                                                                                  #                        REQUIRED FOR EXECUTION OF THIS MANEUVER BY TEH THRUSTING
020038,000339:                                                                                                  #                        PROGRAM SELECTED AFTER COMPLETION OF THIS PROGRAM.
020039,000340: 
020040,000341:                                                                                                  #        (5)     THE TIME OF INTERCEPT (T(INT)) WAS DEFINED BY PREVIOUS
020041,000342:                                                                                                  #                COMPLETION OF THE TRANSFER PHASE INITIATION (TPI) PROGRAM
020042,000343:                                                                                                  #                (P34/P74) AND IS PRESENTLY AVAILABLE IN STORAGE.

Page 461

020044,000345:                                                                                                  #        (6)     ONCE THE PARAMETERS REQUIRED FOR COMPUTATION OF THE MANEUVER
020045,000346:                                                                                                  #                HAVE BEEN COMPLETELY SPECIFIED, THE VALUE OF THE ACTIVE
020046,000347:                                                                                                  #                VEHICLE CENTRAL ANGLE OF TRANSFER IS COMPUTED AND STORED.
020047,000348:                                                                                                  #                THIS NUMBER WILL BE AVAILABLE FOR DISPLAY TO THE ASTRONAUT
020048,000349:                                                                                                  #                THROUGH THE USE OF V06N52
020049,000350: 
020050,000351:                                                                                                  #                THE ASTRONAUT WILL CALL THIS DISPLAY TO VERIFY THAT THE
020051,000352:                                                                                                  #                CENTRAL ANGLE OF TRANSFER OF THE ACTIVE VEHICLE IS NOT WITHIN
020052,000353:                                                                                                  #                170 TO 190 DEGREES.  IF THE ANGLE IS WITHIN THIS ZONE THE
020053,000354:                                                                                                  #                ASTRONAUT SHOULD REASSESS THE INPUT TARGETING PARAMETERS BASED
020054,000355:                                                                                                  #                UPON DELTA V AND EXPECTED MANEUVER TIME.
020055,000356:                                                                                                  #        (7)     THIS PROGRAM IS SELECTED BY THE ASTRONAUT BY DSKY ENTRY --
020056,000357: 
020057,000358:                                                                                                  #                        P35 IF THIS VEHICLE IS ACTIVE VEHICLE.
020058,000359: 
020059,000360:                                                                                                  #                        P75 IF THIS VEHICLE IS PASSIVE VEHICLE.
020060,000361: 
020061,000362:                                                                                                  #  INPUT
020062,000363:                                                                                                  #        (1)     TPASS4          TIME OF INTERCEPT -- SAVED FROM P34/P74
020063,000364: 
020064,000365:                                                                                                  #  OUTPUT
020065,000366:                                                                                                  #        (1)     TRKMKCNT        NUMBER OF MARKS
020066,000367:                                                                                                  #        (2)     TTOGO           TIME TO GO
020067,000368:                                                                                                  #        (3)     +MGA            MIDOLF GIMBAL ANGLE
020068,000369:                                                                                                  #        (4)     DVLOS           DELTA VELOCITY AT MID -- LINE OF SIGHT
020069,000370:                                                                                                  #        (5)     DELVLVC         DELTA VELOCITY AT MID -- LOCAL VERTICAL COORDINATES
020070,000371: 
020071,000372:                                                                                                  #  DOWNLINK
020072,000373:                                                                                                  #        (1)     TIG             TIME OF THE TPM MANEUVER
020073,000374:                                                                                                  #        (2)     DELVEET3        DELTA VELOCITY AT TPM -- REFERENCE COORDINATES
020074,000375:                                                                                                  #        (3)     TPASS4          TIME OF INTERCEPT
020075,000376: 
020076,000377:                                                                                                  #  COMMUNICATION TO THRUSTING PROGRAMS
020077,000378:                                                                                                  #        (1)     TIG             TIME OF THE TPM MANEUVER
020078,000379:                                                                                                  #        (2)     RTARG           OFFSET TARGET POSITION
020079,000380:                                                                                                  #        (3)     TPASS4          TIME OF INTERCEPT
020080,000381:                                                                                                  #        (4)     XDELVFLG        RESET TO INDICATE LAMBERT (AIMPOINT) VG COMPUTATION.
020081,000382: 
020082,000383:                                                                                                  #  SUBROUTINES USED
020083,000384:                                                                                                  #        AVFLAGA
020084,000385:                                                                                                  #        AVFLAGP
020085,000386:                                                                                                  #        LOADTIME
020086,000387:                                                                                                  #        SELECTMU
020087,000388:                                                                                                  #        PRECSET
020088,000389:                                                                                                  #        S34/35.1
020089,000390:                                                                                                  #        S34/35.2

Page 462

020091,000392:                                                                                                  #        S34/35.5
020092,000393:                                                                                                  #        VN1645
020093,000394: 
020094,000395: 35,2153                                           COUNT    35/P3575                              
020095,000396: 35,2153  E4,1763                                  EBANK=   KT                                    
020096,000397: 
020097,000398: 35,2153           03726        P35                TC       AVFLAGA                               
020098,000399: 35,2154           00006                           EXTEND                                         
020099,000400: 35,2155           31422                           DCA      ATIGINC                               
020100,000401: 35,2156           02162                           TC       P35/P75A                              
020101,000402: 35,2157           03741        P75                TC       AVFLAGP                               
020102,000403: 35,2160           00006                           EXTEND                                         
020103,000404: 35,2161           31424                           DCA      PTIGINC                               
020104,000405: 35,2162           53764        P35/P75A           DXCH     KT                                    
020105,000406: 35,2163           03746                           TC       P20FLGON                              #  SET UPDATFLG, TRACKFLG
020106,000407: 35,2164           06006                           TC       INTPRET                               
020107,000408: 35,2165           77624                           CALL                                           
020108,000409: 35,2166           10716                                    SELECTMU                              
020109,000410: 35,2167           77634        P35/P75B           RTB                                            
020110,000411: 35,2170           45505                                    LOADTIME                              
020111,000412: 35,2171           03665                           STORE    TSTRT                                 
020112,000413: 35,2172           77615                           DAD                                            
020113,000414: 35,2173           02364                                    KT                                    
020114,000415: 35,2174           03413                           STORE    TIG                                   
020115,000416: 35,2175           03503                           STORE    INTIME                                #  FOR INITVEL
020116,000417: 35,2176           34041                           STCALL   TDEC1                                 
020117,000418: 35,2177           45354                                    PRECSET                               #  ADVANCE BOTH VEHICLES
020118,000419: 35,2200           77624                           CALL                                           
020119,000420: 35,2201           72522                                    S34/35.1                              #  GET NORM AND LOS FOR TRANSFORM
020120,000421: 35,2202           77624                           CALL                                           
020121,000422: 35,2203           72534                                    S34/35.2                              #  GET DELTA V(LV)
020122,000423: 35,2204           77624                           CALL                                           
020123,000424: 35,2205           72742                                    S34/35.5                              
020124,000425: 35,2206           77624                           CALL                                           
020125,000426: 35,2207           73005                                    VN1645                                
020126,000427: 35,2210           77650                           GOTO                                           
020127,000428: 35,2211           72167                                    P35/P75B                              

Page 463

020129,000430:                                                                                                  #  ***** S33/34.1 *****
020130,000431: 
020131,000432: 35,2212           66220        S33/34.1           STQ      SSP                                   
020132,000433: 35,2213           01340                                    NORMEX                                
020133,000434: 35,2214           03665                                    TITER                                 
020134,000435: 35,2215           40000                           OCT      40000                                 
020135,000436: 35,2216           40345                           DLOAD    SETPD                                 
020136,000437: 35,2217           33136                                    MAX250                                
020137,000438: 35,2220           00001                                    0D                                    
020138,000439: 35,2221           27454                           STOVL    SECMAX                                
020139,000440: 35,2222           03540                                    RACT3                                 
020140,000441: 35,2223           27576                           STOVL    RAPREC                                
020141,000442: 35,2224           03546                                    VACT3                                 
020142,000443: 35,2225           27570                           STOVL    VAPREC                                
020143,000444: 35,2226           03554                                    RPASS3                                
020144,000445: 35,2227           27620                           STOVL    RPPREC                                
020145,000446: 35,2230           03562                                    VPASS3                                
020146,000447: 35,2231           03612                           STORE    VPPREC                                
020147,000448: 35,2232           77624        ELCALC             CALL                                           
020148,000449: 35,2233           72522                                    S34/35.1                              #  NORMAL AND LOS
020149,000450: 35,2234           63235                           VXV      PDVL                                  
020150,000451: 35,2235           03540                                    RACT3                                 #  (RA*VA)*RA 0D
020151,000452: 35,2236           53515                           PDVL     UNIT                                  #  ULOS AT 6D
020152,000453: 35,2237           03540                                    RACT3                                 
020153,000454: 35,2240           46315                           PDVL     VPROJ                                 #  XCHNJ AND UP
020154,000455: 35,2241           51352                           VSL2     BVSU                                  
020155,000456: 35,2242           02625                                    ULOS                                  
020156,000457: 35,2243           63256                           UNIT     PDVL                                  #  UP AT 0D
020157,000458: 35,2244           63241                           DOT      PDVL                                  #  UP.UN*RA AT 0D
020158,000459: 35,2245           00001                                    0D                                    #  UP IN MPAC
020159,000460: 35,2246           75241                           DOT      SIGN                                  
020160,000461: 35,2247           02625                                    ULOS                                  
020161,000462: 35,2250           65552                           SL1      ACOS                                  
020162,000463: 35,2251           50315                           PDVL     DOT                                   #  EA AT 0D
020163,000464: 35,2252           02625                                    ULOS                                  
020164,000465: 35,2253           03540                                    RACT3                                 
020165,000466: 35,2254           71244                           BPL      DLOAD                                 
020166,000467: 35,2255           72260                                    TESTY                                 
020167,000468: 35,2256           15340                                    DPPOSMAX                              
020168,000469: 35,2257           41425                           DSU      PUSH                                  
020169,000470: 35,2260           71214        TESTY              BOFF     DLOAD                                 
020170,000471: 35,2261           03741                                    ITSWICH                               
020171,000472: 35,2262           72507                                    ELEX                                  
020172,000473: 35,2263           03452                                    DELEL                                 
020173,000474: 35,2264           14033                           STODL    DELELO                                
020174,000475: 35,2265           77625                           DSU                                            
020175,000476: 35,2266           03744                                    ELEV                                  
020176,000477: 35,2267           03452                           STORE    DELEL                                 
020177,000478: 35,2270           45246                           ABS      DSU                                   
020178,000479: 35,2271           33142                                    ELEPS                                 

Page 464

020180,000481: 35,2272           77640                           BMN                                            
020181,000482: 35,2273           72517                                    TIMEX                                 #  COMMERCIALS EVERYWHERE
020182,000483: 35,2274           70535        FIGTIME            SLOAD    SR1                                   
020183,000484: 35,2275           03665                                    TITER                                 
020184,000485: 35,2276           72030                           BHIZ     LXA,1                                 
020185,000486: 35,2277           01340                                    NORMEX                                #  TOO MANY ITERATIONS
020186,000487: 35,2300           00154                                    MPAC                                  
020187,000488: 35,2301           77330                           SXA,1    VLOAD                                 
020188,000489: 35,2302           03664                                    TITER                                 
020189,000490: 35,2303           03554                                    RPASS3                                
020190,000491: 35,2304           65256                           UNIT     PDDL                                  
020191,000492: 35,2305           00045                                    36D                                   
020192,000493: 35,2306           53515                           PDVL     UNIT                                  
020193,000494: 35,2307           03540                                    RACT3                                 
020194,000495: 35,2310           77725                           PDDL                                           
020195,000496: 35,2311           41525                           PDDL     PUSH                                  
020196,000497: 35,2312           00045                                    36D                                   
020197,000498: 35,2313           77621                           BDSU                                           
020198,000499: 35,2314           00015                                    12D                                   
020199,000500: 35,2315           14037                           STODL    30D                                   #  RP-RA MAGNITUDES
020200,000501: 35,2316           15330                                    DPHALF                                
020201,000502: 35,2317           41425                           DSU      PUSH                                  
020202,000503: 35,2320           03744                                    ELEV                                  
020203,000504: 35,2321           50165                           SIGN     BMN                                   
020204,000505: 35,2322           00037                                    30D                                   
020205,000506: 35,2323           01340                                    NORMEX                                
020206,000507: 35,2324           71545                           DLOAD    COS                                   
020207,000508: 35,2325           56205                           DMP      DDV                                   
020208,000509: 35,2326           00017                                    14D                                   
020209,000510: 35,2327           00015                                    12D                                   
020210,000511: 35,2330           77676                           DCOMP                                          #  SINCE COS(180-A)=-COS A
020211,000512: 35,2331           00035                           STORE    28D                                   
020212,000513: 35,2332           44246                           ABS      BDSU                                  
020213,000514: 35,2333           15330                                    DPHALF                                
020214,000515: 35,2334           77240                           BMN      VLOAD                                 
020215,000516: 35,2335           01340                                    NORMEX                                
020216,000517: 35,2336           02617                                    UNRM                                  
020217,000518: 35,2337           53435                           VXV      UNIT                                  
020218,000519: 35,2340           00007                                    6D                                    #  UN*RA
020219,000520: 35,2341           41241                           DOT      DMP                                   
020220,000521: 35,2342           03546                                    VACT3                                 
020221,000522: 35,2343           00015                                    12D                                   
020222,000523: 35,2344           47315                           PDVL     VXV                                   
020223,000524: 35,2345           00001                                    0D                                    
020224,000525: 35,2346           03562                                    VPASS3                                
020225,000526: 35,2347           53435                           VXV      UNIT                                  
020226,000527: 35,2350           00001                                    0D                                    #  (RP*VP)*RP
020227,000528: 35,2351           41241                           DOT      DMP                                   
020228,000529: 35,2352           03562                                    VPASS3                                
020229,000530: 35,2353           00017                                    14D                                   

Page 465

020231,000532: 35,2354           77621                           BDSU                                           
020232,000533: 35,2355           63301                           NORM     PDVL                                  #  NORMALIZED WA-WP 12D
020233,000534: 35,2356           00047                                    X1                                    
020234,000535: 35,2357           00007                                    6D                                    
020235,000536: 35,2360           50235                           VXV      DOT                                   
020236,000537: 35,2361           00001                                    0D                                    
020237,000538: 35,2362           02617                                    UNRM                                  #  RA*RP.UN 14D
020238,000539: 35,2363           50315                           PDVL     DOT                                   
020239,000540: 35,2364           00001                                    0D                                    
020240,000541: 35,2365           00007                                    6D                                    
020241,000542: 35,2366           65552                           SL1      ACOS                                  
020242,000543: 35,2367           77765                           SIGN                                           
020243,000544: 35,2370           43225                           DSU      DAD                                   #  ALPHA PI
020244,000545: 35,2371           15330                                    DPHALF                                
020245,000546: 35,2372           03744                                    ELEV                                  
020246,000547: 35,2373           65525                           PDDL     ACOS                                  
020247,000548: 35,2374           00035                                    28D                                   
020248,000549: 35,2375           75221                           BDSU     SIGN                                  
020249,000550: 35,2376           15330                                    DPHALF                                
020250,000551: 35,2377           00037                                    30D                                   #  CONTAINS RP-RA
020251,000552: 35,2400           77615                           DAD                                            
020252,000553: 35,2401           56205                           DMP      DDV                                   
020253,000554: 35,2402           33134                                    TWOPI                                 
020254,000555: 35,2403           77605                           DMP                                            
020255,000556: 35,2404           41257                           SL*      DMP                                   
020256,000557: 35,2405           20176                                    0          -3,1                       
020257,000558: 35,2406           51406                           PUSH     ABS                                   
020258,000559: 35,2407           50025                           DSU      BMN                                   
020259,000560: 35,2410           03454                                    SECMAX                                
020260,000561: 35,2411           72415                                    OKMAX                                 
020261,000562: 35,2412           75345                           DLOAD    SIGN                                  #  REPLACE TIME WITH MAX TIME SIGNED
020262,000563: 35,2413           03454                                    SECMAX                                
020263,000564: 35,2414           77606                           PUSH                                           
020264,000565: 35,2415           51135        OKMAX              SLOAD    BPL                                   #  TEST FIRST ITERATION
020265,000566: 35,2416           03665                                    TITER                                 
020266,000567: 35,2417           72425                                    REPETE                                
020267,000568: 35,2420           71331                           SSP      DLOAD                                 
020268,000569: 35,2421           03665                                    TITER                                 
020269,000570: 35,2422           37777                           OCT      37777                                 
020270,000571: 35,2423           77650                           GOTO                                           
020271,000572: 35,2424           72463                                    STORDELT                              
020272,000573: 35,2425           41345        REPETE             DLOAD    DMP                                   
020273,000574: 35,2426           03452                                    DELEL                                 
020274,000575: 35,2427           00033                                    DELELO                                
020275,000576: 35,2430           71244                           BPL      DLOAD                                 
020276,000577: 35,2431           72441                                    NEXTES                                
020277,000578: 35,2432           03454                                    SECMAX                                
020278,000579: 35,2433           77605                           DMP                                            
020279,000580: 35,2434           33140                                    THIRD                                 
020280,000581: 35,2435           17454                           STODL    SECMAX                                

Page 466

020282,000583: 35,2436           70446                           ABS      SR1                                   #  CROSSED OVER SOLUTION
020283,000584: 35,2437           52076                           DCOMP    GOTO                                  #  DT=(-SIGN(DTO)//DT//)/2
020284,000585: 35,2440           72451                                    RESIGN                                
020285,000586: 35,2441           51545        NEXTES             DLOAD    ABS                                   
020286,000587: 35,2442           03452                                    DELEL                                 
020287,000588: 35,2443           51525                           PDDL     ABS                                   
020288,000589: 35,2444           00033                                    DELELO                                
020289,000590: 35,2445           77625                           DSU                                            
020290,000591: 35,2446           71240                           BMN      DLOAD                                 
020291,000592: 35,2447           72454                                    REVERS                                #  WRONG DIRECTION
020292,000593: 35,2450           77646                           ABS                                            
020293,000594: 35,2451           52165        RESIGN             SIGN     GOTO                                  
020294,000595: 35,2452           03450                                    DELTEEO                               
020295,000596: 35,2453           72463                                    STORDELT                              
020296,000597: 35,2454           57545        REVERS             DLOAD    DCOMP                                 
020297,000598: 35,2455           03450                                    DELTEEO                               
020298,000599: 35,2456           70406                           PUSH     SR1                                   
020299,000600: 35,2457           03450                           STORE    DELTEEO                               
020300,000601: 35,2460           77615                           DAD                                            
020301,000602: 35,2461           77650                           GOTO                                           
020302,000603: 35,2462           72464                                    ADTIME                                
020303,000604: 35,2463           03450        STORDELT           STORE    DELTEEO                               
020304,000605: 35,2464           77615        ADTIME             DAD                                            
020305,000606: 35,2465           02364                                    NOMTPI                                #  SUM OF DELTA T'S
020306,000607: 35,2466           02364                           STORE    NOMTPI                                
020307,000608: 35,2467           63375                           VLOAD    PDVL                                  
020308,000609: 35,2470           03570                                    VAPREC                                
020309,000610: 35,2471           03576                                    RAPREC                                
020310,000611: 35,2472           77624                           CALL                                           
020311,000612: 35,2473           72702                                    GOINT                                 
020312,000613: 35,2474           77624                           CALL                                           
020313,000614: 35,2475           45376                                    ACTIVE                                #  STORE NEW RACT3 VACT3
020314,000615: 35,2476           63375                           VLOAD    PDVL                                  
020315,000616: 35,2477           03612                                    VPPREC                                
020316,000617: 35,2500           03620                                    RPPREC                                
020317,000618: 35,2501           77624                           CALL                                           
020318,000619: 35,2502           72702                                    GOINT                                 
020319,000620: 35,2503           77624                           CALL                                           
020320,000621: 35,2504           45406                                    PASSIVE                               #  STORE NEW RPASS3 VPASS3
020321,000622: 35,2505           77650                           GOTO                                           
020322,000623: 35,2506           72232                                    ELCALC                                
020323,000624: 35,2507           43345        ELEX               DLOAD    DAD                                   
020324,000625: 35,2510           03663                                    TTPI                                  
020325,000626: 35,2511           02364                                    NOMTPI                                
020326,000627: 35,2512           17663                           STODL    TTPI                                  
020327,000628: 35,2513           77614                           BON                                            
020328,000629: 35,2514           01310                                    ETPIFLAG                              
020329,000630: 35,2515           72517                                    TIMEX                                 
020330,000631: 35,2516           03744                           STORE    ELEV                                  
020331,000632: 35,2517           52145        TIMEX              DLOAD    GOTO                                  

Page 467

020333,000634: 35,2520           15332                                    ZEROVECS                              
020334,000635: 35,2521           01340                                    NORMEX                                
020335,000636: 

Page 468

020337,000638:                                                                                                  #  ***** S34/35.1 *****
020338,000639: 
020339,000640:                                                                                                  #  COMPUTE UNIT NORMAL AND LINE OF SIGHT VECTORS GIVEN THE ACTIVE AND
020340,000641:                                                                                                  #  PASSIVE POS AND VEL AT TIME T3
020341,000642: 
020342,000643: 35,2522           52375        S34/35.1           VLOAD    VSU                                   
020343,000644: 35,2523           03554                                    RPASS3                                
020344,000645: 35,2524           03540                                    RACT3                                 
020345,000646: 35,2525           41456                           UNIT     PUSH                                  
020346,000647: 35,2526           26625                           STOVL    ULOS                                  
020347,000648: 35,2527           03540                                    RACT3                                 
020348,000649: 35,2530           53435                           VXV      UNIT                                  
020349,000650: 35,2531           03546                                    VACT3                                 
020350,000651: 35,2532           02617                           STORE    UNRM                                  
020351,000652: 35,2533           77616                           RVQ                                            
020352,000653: 

Page 469

020354,000655:                                                                                                  #  ***** S34/35.2 *****
020355,000656: 
020356,000657:                                                                                                  #  ADVANCE PASSIVE VEH TO RENDEZVOUS TIME AND GET REQ VEL FROM LAMBERT
020357,000658: 
020358,000659: 35,2534           77220        S34/35.2           STQ      VLOAD                                 
020359,000660: 35,2535           02370                                    SUBEXIT                               
020360,000661: 35,2536           03562                                    VPASS3                                
020361,000662: 35,2537           65315                           PDVL     PDDL                                  
020362,000663: 35,2540           03554                                    RPASS3                                
020363,000664: 35,2541           03503                                    INTIME                                
020364,000665: 35,2542           65325                           PDDL     PDDL                                  
020365,000666: 35,2543           03656                                    TPASS4                                
020366,000667: 35,2544           15332                                    ZEROVECS                              
020367,000668: 35,2545           45006                           PUSH     CALL                                  
020368,000669: 35,2546           72706                                    INTINT                                #  GET TARGET VECTOR
020369,000670: 35,2547           27415        S3435.25           STOVL    RTARG                                 
020370,000671: 35,2550           00007                                    VATT                                  
020371,000672: 35,2551           27640                           STOVL    VPASS4                                
020372,000673: 35,2552           03415                                    RTARG                                 
020373,000674:                                                                                                  #  COMPUTE PHI = PI + (ACC(UNIT RA.UNIT RP) - PI) SIGN(RA*RP.U)
020374,000675: 35,2553           63256                           UNIT     PDVL                                  #  UNIT RP
020375,000676: 35,2554           03540                                    RACT3                                 
020376,000677: 35,2555           41456                           UNIT     PUSH                                  #  UNIT RA
020377,000678: 35,2556           50235                           VXV      DOT                                   
020378,000679: 35,2557           00001                                    0D                                    
020379,000680: 35,2560           02617                                    UNRM                                  #  RA*RP.U
020380,000681: 35,2561           77715                           PDVL                                           
020381,000682: 35,2562           72441                           DOT      SL1                                   #  UNIT RA.UNIT RP
020382,000683: 35,2563           00001                                    0D                                    
020383,000684: 35,2564           75326                           ACOS     SIGN                                  
020384,000685: 35,2565           43244                           BPL      DAD                                   
020385,000686: 35,2566           72570                                    NOPIE                                 
020386,000687: 35,2567           15340                                    DPPOSMAX                              #  REASONABLE TWO PI
020387,000688: 35,2570           16633        NOPIE              STODL    ACTCENT                               
020388,000689: 35,2571           03656                                    TPASS4                                
020389,000690: 35,2572           77625                           DSU                                            
020390,000691: 35,2573           03503                                    INTIME                                
020391,000692: 35,2574           03423                           STORE    DELLT4                                
020392,000693: 35,2575           40335                           SLOAD    SETPD                                 
020393,000694: 35,2576           33144                                    DECTWO                                
020394,000695: 35,2577           00001                                    0D                                    
020395,000696: 35,2600           63325                           PDDL     PDVL                                  
020396,000697: 35,2601           33147                                    EPSFOUR                               
020397,000698: 35,2602           03540                                    RACT3                                 
020398,000699: 35,2603           27570                           STOVL    RINIT                                 
020399,000700: 35,2604           03546                                    VACT3                                 
020400,000701: 35,2605           37576                           STCALL   VINIT                                 
020401,000702: 35,2606           22000                                    INITVEL                               
020402,000703: 35,2607           77624                           CALL                                           
020403,000704: 35,2610           72667                                    LOMAT                                 
020404,000705: 35,2611           64375                           VLOAD    MXV                                   

Page 470

020406,000707: 35,2612           03646                                    DELVEET3                              
020407,000708: 35,2613           00001                                    0D                                    
020408,000709: 35,2614           77772                           VSL1                                           
020409,000710: 35,2615           37405                           STCALL   DELVLVC                               
020410,000711: 35,2616           02370                                    SUBEXIT                               
020411,000712: 

Page 471

020413,000714:                                                                                                  #  ***** S34/35.3 *****
020414,000715: 
020415,000716: 35,2617           45020        S34/35.3           STQ      CALL                                  
020416,000717: 35,2620           01340                                    NORMEX                                
020417,000718: 35,2621           72667                                    LOMAT                                 #  GET MATRIX IN PUSH LIST
020418,000719: 35,2622           61375                           VLOAD    VXM                                   
020419,000720: 35,2623           03405                                    DELVLVC                               #  NEW DEL V TPI
020420,000721: 35,2624           00001                                    0D                                    
020421,000722: 35,2625           77772                           VSL1                                           
020422,000723: 35,2626           03646                           STORE    DELVEET3                              #  SAVE FOR TRANSFORM
020423,000724: 35,2627           63255                           VAD      PDVL                                  
020424,000725: 35,2630           03546                                    VACT3                                 #  NEW V REQ
020425,000726: 35,2631           03540                                    RACT3                                 
020426,000727: 35,2632           65325                           PDDL     PDDL                                  
020427,000728: 35,2633           03413                                    TIG                                   
020428,000729: 35,2634           03656                                    TPASS4                                
020429,000730: 35,2635           41525                           PDDL     PUSH                                  
020430,000731: 35,2636           15340                                    DPPOSMAX                              
020431,000732: 35,2637           77624                           CALL                                           #  INTEG. FOR NEW TARGET VEC
020432,000733: 35,2640           72706                                    INTINT                                
020433,000734: 35,2641           77775                           VLOAD                                          
020434,000735: 35,2642           00001                                    RATT                                  
020435,000736: 35,2643           03415                           STORE    RTARG                                 
020436,000737: 35,2644           41575        NOVRWRT            VLOAD    PUSH                                  
020437,000738: 35,2645           02625                                    ULOS                                  
020438,000739: 35,2646           57435                           VXV      VCOMP                                 
020439,000740: 35,2647           02617                                    UNRM                                  
020440,000741: 35,2650           41456                           UNIT     PUSH                                  
020441,000742: 35,2651           76435                           VXV      VSL1                                  
020442,000743: 35,2652           02625                                    ULOS                                  
020443,000744: 35,2653           77715                           PDVL                                           
020444,000745: 35,2654           64315                           PDVL     MXV                                   
020445,000746: 35,2655           03646                                    DELVEET3                              
020446,000747: 35,2656           00001                                    0D                                    
020447,000748: 35,2657           77772                           VSL1                                           
020448,000749: 35,2660           36611                           STCALL   DVLOS                                 
020449,000750: 35,2661           01340                                    NORMEX                                
020450,000751: 

Page 472

020452,000753:                                                                                                  #  ***** S34/35.4 *****
020453,000754: 
020454,000755: 35,2662           40220        S34/35.4           STQ      SETPD                                 #  NO ASTRONAUT OVERWRITE
020455,000756: 35,2663           01340                                    NORMEX                                
020456,000757: 35,2664           00001                                    0D                                    
020457,000758: 35,2665           77650                           GOTO                                           
020458,000759: 35,2666           72644                                    NOVRWRT                               
020459,000760: 

Page 473

020461,000762:                                                                                                  #  ***** LOMAT *****
020462,000763: 
020463,000764: 35,2667           57575        LOMAT              VLOAD    VCOMP                                 
020464,000765: 35,2670           02617                                    UNRM                                  
020465,000766: 35,2671           24007                           STOVL    6D                                    #  Y
020466,000767: 35,2672           03540                                    RACT3                                 
020467,000768: 35,2673           57456                           UNIT     VCOMP                                 
020468,000769: 35,2674           00015                           STORE    12D                                   
020469,000770: 35,2675           76435                           VXV      VSL1                                  
020470,000771: 35,2676           02617                                    UNRM                                  #  Z*-Y
020471,000772: 35,2677           00001                           STORE    0D                                    
020472,000773: 35,2700           43401                           SETPD    RVQ                                   
020473,000774: 35,2701           00023                                    18D                                   
020474,000775: 35,2702           65325        GOINT              PDDL     PDDL                                  #  DO
020475,000776: 35,2703           15332                                    ZEROVECS                              #        NOT
020476,000777: 35,2704           02364                                    NOMTPI                                
020477,000778: 35,2705           41406                           PUSH     PUSH                                  #                ORDER OR INSERT BEFORE INTINT
020478,000779: 35,2706           45020        INTINT             STQ      CALL                                  
020479,000780: 35,2707           02367                                    RTRN                                  
020480,000781: 35,2710           27371                                    INTSTALL                              
020481,000782: 35,2711           71214                           CLEAR    DLOAD                                 
020482,000783: 35,2712           01673                                    INTYPFLG                              
020483,000784: 35,2713           43054                           BZE      SET                                   
020484,000785: 35,2714           72716                                    +2                                    
020485,000786: 35,2715           01473                                    INTYPFLG                              
020486,000787: 35,2716           45545                           DLOAD    STADR                                 
020487,000788: 35,2717           63736                           STODL    TDEC1                                 
020488,000789: 35,2720           73014                           SET      LXA,2                                 
020489,000790: 35,2721           00063                                    MOONFLAG                              
020490,000791: 35,2722           03746                                    RTX2                                  
020491,000792: 35,2723           43014                           BON      CLEAR                                 
020492,000793: 35,2724           04303                                    CMOONFLG                              
020493,000794: 35,2725           72727                                    ALLSET                                
020494,000795: 35,2726           00263                                    MOONFLAG                              
020495,000796: 35,2727           25517        ALLSET             STOVL    TET                                   
020496,000797: 35,2730           77657                           VSR*                                           
020497,000798: 35,2731           57176                                    0,2                                   
020498,000799: 35,2732           25535                           STOVL    RCV                                   
020499,000800: 35,2733           77657                           VSR*                                           
020500,000801: 35,2734           57176                                    0,2                                   
020501,000802: 35,2735           35543                           STCALL   VCV                                   
020502,000803: 35,2736           27066                                    INTEGRVS                              
020503,000804: 35,2737           52175                           VLOAD    GOTO                                  
020504,000805: 35,2740           00001                                    RATT                                  
020505,000806: 35,2741           02367                                    RTRN                                  
020506,000807: 

Page 474

020508,000809:                                                                                                  #  ***** S34/35.5 *****
020509,000810: 
020510,000811:                                                                                                  #  SUBROUTINES USED
020511,000812:                                                                                                  #        BANKCALL
020512,000813:                                                                                                  #        GOFLASH
020513,000814:                                                                                                  #        GOTOP00H
020514,000815:                                                                                                  #        S34/35.3
020515,000816:                                                                                                  #        S34.35.4
020516,000817:                                                                                                  #        VNP00H
020517,000818: 
020518,000819: 35,2742           43020        S34/35.5           STQ      BON                                   
020519,000820: 35,2743           02370                                    SUBEXIT                               
020520,000821: 35,2744           01311                                    FINALFLG                              
020521,000822: 35,2745           72751                                    FLAGON                                
020522,000823: 35,2746           52014                           SET      GOTO                                  
020523,000824: 35,2747           00470                                    UPDATFLG                              
020524,000825: 35,2750           72775                                    FLAGOFF                               
020525,000826: 35,2751           77414        FLAGON             CLEAR    EXIT                                  
020526,000827: 35,2752           03274                                    NTARGFLG                              
020527,000828: 35,2753           33131                           CAF      V06N81                                
020528,000829: 35,2754           04555                           TC       BANKCALL                              
020529,000830: 35,2755           20624                           CADR     GOFLASH                               
020530,000831: 35,2756           04106                           TC       GOTOP00H                              
020531,000832: 35,2757           02764                           TC       +5                                    
020532,000833: 35,2760           06006                           TC       INTPRET                               
020533,000834: 35,2761           77414                           SET      EXIT                                  
020534,000835: 35,2762           03074                                    NTARGFLG                              
020535,000836: 35,2763           02753                           TC       FLAGON     +2                         
020536,000837: 35,2764           06006                           TC       INTPRET                               
020537,000838: 35,2765           45014                           BOFF     CALL                                  
020538,000839: 35,2766           03354                                    NTARGFLG                              
020539,000840: 35,2767           72771                                    NOCHG                                 
020540,000841: 35,2770           72617                                    S34/35.3                              
020541,000842: 35,2771           77214        NOCHG              CLEAR    VLOAD                                 
020542,000843: 35,2772           01267                                    XDELVFLG                              
020543,000844: 35,2773           03646                                    DELVEET3                              
020544,000845: 35,2774           03646                           STORE    DELVSIN                               
020545,000846: 35,2775           77624        FLAGOFF            CALL                                           
020546,000847: 35,2776           72662                                    S34/35.4                              
020547,000848: 35,2777           77776                           EXIT                                           
020548,000849: 35,3000           33130                           CAF      V06N59                                
020549,000850: 35,3001           03114                           TC       VNP00H                                
020550,000851: 35,3002           06006                           TC       INTPRET                               
020551,000852: 35,3003           77650                           GOTO                                           
020552,000853: 35,3004           02370                                    SUBEXIT                               
020553,000854: 

Page 475

020555,000856:                                                                                                  #  ***** VN1645 *****
020556,000857: 
020557,000858:                                                                                                  #  SUBROUTINES USED
020558,000859:                                                                                                  #        P3XORP7X
020559,000860:                                                                                                  #        GET+MGA
020560,000861:                                                                                                  #        BANKCALL
020561,000862:                                                                                                  #        DELAYJOB
020562,000863:                                                                                                  #        COMPTGO
020563,000864:                                                                                                  #        GOFLASHR
020564,000865:                                                                                                  #        GOTOP00H
020565,000866:                                                                                                  #        FLAGUP
020566,000867: 
020567,000868: 35,3005           71220        VN1645             STQ      DLOAD                                 
020568,000869: 35,3006           02370                                    SUBEXIT                               
020569,000870: 35,3007           33145                                    DP-.01                                
020570,000871: 35,3010           03626                           STORE    +MGA                                  #  MGA = -.01
020571,000872: 35,3011           71214                           BOFF     DLOAD                                 
020572,000873: 35,3012           01351                                    FINALFLG                              
020573,000874: 35,3013           73033                                    GET45                                 
020574,000875: 35,3014           33145                                    DP-.01                                
020575,000876: 35,3015           77615                           DAD                                            
020576,000877: 35,3016           33145                                    DP-.01                                
020577,000878: 35,3017           03626                           STORE    +MGA                                  #  MGA = -.02
020578,000879: 35,3020           77414                           BOFF     EXIT                                  
020579,000880: 35,3021           01742                                    REFSMFLG                              
020580,000881: 35,3022           73033                                    GET45                                 
020581,000882: 35,3023           03106                           TC       P3XORP7X                              
020582,000883: 35,3024           03026                           TC       +2                                    #  P3X
020583,000884: 35,3025           03034                           TC       GET45      +1                         #  P7X
020584,000885: 35,3026           06006                           TC       INTPRET                               
020585,000886: 35,3027           41575                           VLOAD    PUSH                                  
020586,000887: 35,3030           03646                                    DELVSIN                               
020587,000888: 35,3031           77624                           CALL                                           #  COMPUTE MGA
020588,000889: 35,3032           10660                                    GET+MGA                               
020589,000890: 35,3033           77776        GET45              EXIT                                           
020590,000891: 35,3034           03564                           TC       COMPTGO                               #  INITIATE TASK TO UPDATE TTOGO
020591,000892: 35,3035           31770                           CA       SUBEXIT                               
020592,000893: 35,3036           55766                           TS       QSAVED                                
020593,000894: 35,3037           34734                           CAF      1SEC                                  
020594,000895: 35,3040           04555                           TC       BANKCALL                              
020595,000896: 35,3041           01732                           CADR     DELAYJOB                              
020596,000897: 35,3042           33132                           CAF      V16N45                                #  TRKMKCNT, TTOGO, +MGA
020597,000898: 35,3043           04555                           TC       BANKCALL                              
020598,000899: 35,3044           20624                           CADR     GOFLASH                               
020599,000900: 35,3045           03050                           TC       KILCLOCK                              #  TERMINATE
020600,000901: 35,3046           03053                           TC       N45PROC                               #  PROCEED
020601,000902: 35,3047           03063                           TC       CLUPDATE                              #  RECYCLE -- RETURN FOR INITIAL COMPUTATION
020602,000903: 35,3050           30005        KILCLOCK           CA       Z                                     
020603,000904: 35,3051           54000                           TS       DISPDEX                               

Page 476

020605,000906: 35,3052           04106                           TC       GOTOP00H                              
020606,000907: 35,3053           40076        N45PROC            CS       FLAGWRD2                              
020607,000908: 35,3054           74705                           MASK     BIT6                                  
020608,000909: 35,3055           00006                           EXTEND                                         
020609,000910: 35,3056           13050                           BZF      KILCLOCK                              #  FINALFLG IS SET -- FLASH V37 -- AWAIT NEW PGM
020610,000911: 35,3057           05301                           TC       PHASCHNG                              
020611,000912: 35,3060           04024                           OCT      04024                                 
020612,000913: 35,3061           05435                           TC       UPFLAG                                #  SET
020613,000914: 35,3062           00047                           ADRES    FINALFLG                              #  FINALFLG
020614,000915: 35,3063           30005        CLUPDATE           CA       Z                                     
020615,000916: 35,3064           54000                           TS       DISPDEX                               
020616,000917: 35,3065           05301                           TC       PHASCHNG                              
020617,000918: 35,3066           04024                           OCT      04024                                 
020618,000919: 35,3067           06006                           TC       INTPRET                               
020619,000920: 35,3070           52014                           CLEAR    GOTO                                  
020620,000921: 35,3071           00670                                    UPDATFLG                              
020621,000922: 35,3072           02366                                    QSAVED                                
020622,000923: 

Page 477

020624,000925:                                                                                                  #  ***** DISPLAYE *****
020625,000926: 
020626,000927:                                                                                                  #  SUBROUTINES USED
020627,000928:                                                                                                  #        BANKCALL
020628,000929:                                                                                                  #        GOFLASHR
020629,000930:                                                                                                  #        GOTOP00H
020630,000931:                                                                                                  #        BLANKET
020631,000932:                                                                                                  #        ENDOFJOB
020632,000933: 
020633,000934: 35,3073           00006        DISPLAYE           EXTEND                                         
020634,000935: 35,3074           23340                           QXCH     NORMEX                                
020635,000936: 35,3075           33126                           CAF      V06N55                                
020636,000937: 35,3076           04555                           TCR      BANKCALL                              
020637,000938: 35,3077           20763                           CADR     GOFLASHR                              
020638,000939: 35,3100           14106                           TCF      GOTOP00H                              
020639,000940: 35,3101           01340                           TC       NORMEX                                
020640,000941: 35,3102           13075                           TCF      -5                                    
020641,000942: 35,3103           34712                           CAF      BIT1                                  #  BLANK R1
020642,000943: 35,3104           05415                           TCR      BLANKET                               
020643,000944: 35,3105           15112                           TCF      ENDOFJOB                              
020644,000945: 

Page 478

020646,000947:                                                                                                  #  ***** P3XORP7X *****
020647,000948: 
020648,000949: 35,3106           37713        P3XORP7X           CAF      HIGH9                                 
020649,000950: 35,3107           71011                           MASK     MODREG                                
020650,000951: 35,3110           00006                           EXTEND                                         
020651,000952: 35,3111           13113                           BZF      +2                                    
020652,000953: 35,3112           24002                           INCR     Q                                     
020653,000954: 35,3113           00002                           RETURN                                         
020654,000955: 
020655,000956:                                                                                                  #  ***** VNP00H *****
020656,000957: 
020657,000958:                                                                                                  #  SUBROUTINES USED
020658,000959:                                                                                                  #        BANKCALL
020659,000960:                                                                                                  #        GOFLASH
020660,000961:                                                                                                  #        GOTOP00H
020661,000962: 
020662,000963: 35,3114           00006        VNP00H             EXTEND                                         
020663,000964: 35,3115           23767                           QXCH     RTRN                                  
020664,000965: 35,3116           55765                           TS       VERBNOUN                              
020665,000966: 35,3117           31765                           CA       VERBNOUN                              
020666,000967: 35,3120           04555                           TCR      BANKCALL                              
020667,000968: 35,3121           20624                           CADR     GOFLASH                               
020668,000969: 35,3122           14106                           TCF      GOTOP00H                              
020669,000970: 35,3123           01767                           TC       RTRN                                  
020670,000971: 35,3124           13117                           TCF      -5                                    
020671,000972: 

Page 479

020673,000974:                                                                                                  #  ***** CONSTANTS *****
020674,000975: 
020675,000976: 35,3125           01445        V06N37             VN       0637                                  
020676,000977: 35,3126           01467        V06N55             VN       0655                                  
020677,000978: 35,3127           01472        V06N58             VN       0658                                  
020678,000979: 35,3130           01473        V06N59             VN       0659                                  
020679,000980: 35,3131           01521        V06N81             VN       0681                                  
020680,000981: 35,3132           04055        V16N45             VN       1645                                  
020681,000982: 35,3133           14441 37325  TWOPI              2DEC     6.283185307 B-4                        
020682,000983: 35,3135           00001 20650  MAX250             2DEC     25         E3                         
020683,000984: 35,3137           12525 12525  THIRD              2DEC     .333333333                            
020684,000985: 35,3141           00004 21505  ELEPS              2DEC     .27777777  E-3                        
020685,000986: 35,3143           00002        DECTWO             OCT      2                                     
020686,000987: 35,3144           77777        DP-.01             OCT      77777                                 #  CONSTANTS
020687,000988: 35,3145           61337                           OCT      61337                                 #  ADJACENT      -.01 FOR MGA DSP
020688,000989: 35,3146           01252 25253  EPSFOUR            2DEC     .0416666666                            
020689,000990: 

Page 480

020691,000992:                                                                                                  #  ***** INITVEL *****
020692,000993:                                                                                                  #  MOD NO -1                     LOG SECTION -- P34-P35, P74-P75
020693,000994:                                                                                                  #  MOD BY WHITE, P.              DATE:  21 NOV 67
020694,000995: 
020695,000996:                                                                                                  #  FUNCTIONAL
020696,000997:                                                                                                  #        THIS SUBROUTINE COMPUTES THE REQUIRED INITIAL VELOCITY VECTOR FOR
020697,000998:                                                                                                  #        A TRAJECTORY OF SPECIFIC TRANSFER TIME BETWEEN SPECIFIED INITIAL
020698,000999:                                                                                                  #        AND TARGET POSITIONS.  THE TRAJECTORY MAY BE EITHER CONIC OR
020699,001000:                                                                                                  #        PRECISION DEPENDING ON AN INPUT PARAMETER (NAMELY, NUMBER OF
020700,001001:                                                                                                  #        OFFSETS).  IN ADDITION, IN TH EPRECISION TRAJECTORY CASE, THE
020701,001002:                                                                                                  #        SUBROUTINE ALSO COMPUTES AN OFFSET TARGET VECTOR, TO BE USED
020702,001003:                                                                                                  #        DURING PURE-CONIC CROSS-PRODUCT STEERING.  THE OFFSET TARGET
020703,001004:                                                                                                  #        VECTOR IS THE TERMINAL POSITION VECTOR OF A CONIC TRAJECTORY WHICH
020704,001005:                                                                                                  #        HAS THE SAME INITIAL STATE AS A PRECISION TRAJECTORY WHOSE
020705,001006:                                                                                                  #        TERMINAL POSITION VECTOR IS THE SPECIFIED TARGET VECTOR.
020706,001007: 
020707,001008:                                                                                                  #        IN ORDER TO AVOID THE INHERENT SINGULARITIES IN THE 180 DEGREE
020708,001009:                                                                                                  #        TRANSFER CASE WHEN THE (TRUE OR OFFSET) TARGET VECTOR MAY BE
020709,001010:                                                                                                  #        SLIGHTLYOUT OF THE ORBITAL PLANE, THIS SUBROUTINE ROTATES THIS
020710,001011:                                                                                                  #        VECTOR INTO A PLANE DEFINED BY THE INPUT INITIAL POSITION VECTOR
020711,001012:                                                                                                  #        AND ANOTHER INPUT VECTOR (USUALLY THE INITIAL VELOCITY VECTOR),
020712,001013:                                                                                                  #        WHENEVER THE INPUT TARGET VECTOR LIES INSIDE A CONE WHOSE VERTEX
020713,001014:                                                                                                  #        IS THE ORIGIN OF COORDINATES, WHOSE AXIS IS THE 180 DEGREE
020714,001015:                                                                                                  #        TRANSFER DIRECTION, AND WHOSE CONE ANGLE IS SPECIFIED BY THE USER.
020715,001016: 
020716,001017:                                                                                                  #        THE LAMBERT SUBROUTINE IS UTILIZED FOR THE CONIC COMUTATIONS AND
020717,001018:                                                                                                  #        THE COASTING INTEGRATION SUBROUTINE IS UTILIZED FOR THE PRECISION
020718,001019:                                                                                                  #        TRAJECTORY COMPUTATIONS.
020719,001020: 
020720,001021:                                                                                                  #  CALLING SEQUENCE
020721,001022:                                                                                                  #        L       CALL
020722,001023:                                                                                                  #        L+1             INITVEL
020723,001024:                                                                                                  #        L+2     (RETURN -- ALWAYS)
020724,001025: 
020725,001026:                                                                                                  #  INPUT
020726,001027:                                                                                                  #        (1)     RINIT           INITIAL POSITION RADIUS VECTOR
020727,001028:                                                                                                  #        (2)     VINIT           INITIAL POSITION VELOCITY VECTOR
020728,001029:                                                                                                  #        (3)     RTARG           TARGET POSITION RADIUS VECTOR
020729,001030:                                                                                                  #        (4)     DELLT4          DESIRED TIME OF FLIGHT FROM RINIT TO RTARG
020730,001031:                                                                                                  #        (5)     INTIME          TIME OF RINIT
020731,001032:                                                                                                  #        (6)     0D              NUMBER OF ITERATIONS OF LAMBERT/INTEGRVS
020732,001033:                                                                                                  #        (7)     2D              ANGLE TO 180 DEGREES WHEN ROTATION STARTS
020733,001034:                                                                                                  #        (8)     RTX1            -2 FOR EARTH, -10D FOR LUNAR
020734,001035:                                                                                                  #        (9)     RTX2            COORDINATE SYSTEM ORIGIN -- 0 FOR EARTH, 2 FOR LUNAR
020735,001036:                                                                                                  #        PUSHLOC SET AT 4D
020736,001037: 

Page 481

020738,001039:                                                                                                  #  OUTPUT
020739,001040:                                                                                                  #        (1)     RTARG           OFFSET TARGET POSITION VECTOR
020740,001041:                                                                                                  #        (2)     VIPRIME         MANEUVER VELOCITY REQUIRED
020741,001042:                                                                                                  #        (3)     VTPRIME         VELOCITY AT TARGET AFTER MANEUVER
020742,001043:                                                                                                  #        (4)     DELVEET3        DELTA VELOCITY REQUIRED FOR MANEUVER
020743,001044: 
020744,001045:                                                                                                  #  SUBROUTINES USED
020745,001046:                                                                                                  #        LAMBERT
020746,001047:                                                                                                  #        INTSTALL
020747,001048:                                                                                                  #        INTEGRVS
020748,001049: 
020749,001050: 11,2000                                           SETLOC   INTVEL                                
020750,001051: 11,2000                                           BANK                                           
020751,001052: 
020752,001053: 11,2000                                           COUNT    11/INITV                              
020753,001054: 11,2000           77614        INITVEL            SET                                            #  COGA GUESS NOT AVAILABLE
020754,001055: 11,2001           00475                                    GUESSW                                
020755,001056: 11,2002           44175        HAVEGUES           VLOAD    STQ                                   
020756,001057: 11,2003           03415                                    RTARG                                 
020757,001058: 11,2004           01340                                    NORMEX                                
020758,001059: 11,2005           03604                           STORE    RTARG1                                
020759,001060: 11,2006           46135                           SLOAD    BHIZ                                  
020760,001061: 11,2007           03747                                    RTX2                                  
020761,001062: 11,2010           22022                                    INITVEL1                              
020762,001063: 11,2011           72575                           VLOAD    VSL2                                  
020763,001064: 11,2012           03570                                    RINIT                                 #  B29
020764,001065: 11,2013           27570                           STOVL    RINIT                                 #  B27
020765,001066: 11,2014           03576                                    VINIT                                 #  B7
020766,001067: 11,2015           77752                           VSL2                                           
020767,001068: 11,2016           27576                           STOVL    VINIT                                 #  B5
020768,001069: 11,2017           03604                                    RTARG1                                
020769,001070: 11,2020           77752                           VSL2                                           
020770,001071: 11,2021           03604                           STORE    RTARG1                                
020771,001072: 
020772,001073:                                                                                                  #  INITIALIZATION
020773,001074: 
020774,001075: 11,2022           71331        INITVEL1           SSP      DLOAD                                 #  SET ITCTR TO -1,LOAD MPAC WITH E4 (PL 2D)
020775,001076: 11,2023           03505                                    ITCTR                                 
020776,001077: 11,2024           77776                                    0          -1                         
020777,001078: 11,2025           70546                           COSINE   SR1                                   #  CALCULATE COSINE (E4) (+2)
020778,001079: 11,2026           17630                           STODL    COZY4                                 #  SET COZY4 TO COSINE (E4) (PL 0D)
020779,001080: 11,2027           67154                           LXA,2    SXA,2                                 
020780,001081: 11,2030           00154                                    MPAC                                  
020781,001082: 11,2031           02703                                    VTARGTAG                              #  SET VTARGTAG TO 0D (SP)
020782,001083: 11,2032           77775                           VLOAD                                          
020783,001084: 11,2033           03570                                    RINIT                                 
020784,001085: 11,2034           26657                           STOVL    R1VEC                                 #  R1VEC EQ RINIT
020785,001086: 11,2035           03604                                    RTARG1                                

Page 482

020787,001088: 11,2036           16665                           STODL    R2VEC                                 #  R2VEC EQ RTARG
020788,001089: 11,2037           03423                                    DELLT4                                
020789,001090: 11,2040           02673                           STORE    TDESIRED                              #  TDESIRED EQ DELLT4
020790,001091: 11,2041           77201                           SETPD    VLOAD                                 
020791,001092: 11,2042           00001                                    0D                                    #  INITIALIZE PL TO 0D
020792,001093: 11,2043           03570                                    RINIT                                 #  MPAC EQ RINIT (+29)
020793,001094: 11,2044           41456                           UNIT     PUSH                                  #  UNIT(RI) (+1)         (PL 6D)
020794,001095: 11,2045           53435                           VXV      UNIT                                  
020795,001096: 11,2046           03576                                    VINIT                                 #  MPAC EQ UNIT(RI) X VI (+8)
020796,001097: 11,2047           26676                           STOVL    UN                                    
020797,001098: 11,2050           03604                                    RTARG1                                
020798,001099: 11,2051           50256                           UNIT     DOT                                   #  TEMP*RT.URI (+2)      (PL 0D)
020799,001100: 11,2052           43015                           DAD      CLEAR                                 
020800,001101: 11,2053           03630                                    COZY4                                 
020801,001102: 11,2054           03665                                    NORMSW                                
020802,001103: 11,2055           03630                           STORE    COZY4                                 
020803,001104: 11,2056           43044        INITVEL2           BPL      SET                                   
020804,001105: 11,2057           22101                                    INITVEL3                              #  UN CALCULATED IN LAMBERT
020805,001106: 11,2060           03465                                    NORMSW                                
020806,001107: 
020807,001108:                                                                                                  #  ROTATE RC INTO YC PLANE -- SET UNIT NORMAL TO YC
020808,001109: 
020809,001110: 11,2061           41575                           VLOAD    PUSH                                  #                (PL 6D)
020810,001111: 11,2062           02665                                    R2VEC                                 #  RC TO 6D (+29)
020811,001112: 11,2063           63246                           ABVAL    PDVL                                  #  RC TO MPAC, ABVAL(RC) (+29) TO OD(PL 2D)
020812,001113: 11,2064           46206                           PUSH     VPROJ                                 #                (PL 8D)
020813,001114: 11,2065           02676                                    UN                                    
020814,001115: 11,2066           51352                           VSL2     BVSU                                  
020815,001116: 11,2067           74256                           UNIT     VXSC                                  #                (PL 0D)
020816,001117: 11,2070           77772                           VSL1                                           
020817,001118: 11,2071           02665                           STORE    R2VEC                                 
020818,001119: 11,2072           67351                           TLOAD    SLOAD                                 
020819,001120: 11,2073           11456                                    ZEROVEC                               
020820,001121: 11,2074           03505                                    ITCTR                                 
020821,001122: 11,2075           77244                           BPL      VLOAD                                 
020822,001123: 11,2076           22101                                    INITVEL3                              
020823,001124: 11,2077           02665                                    R2VEC                                 
020824,001125: 11,2100           03604                           STORE    RTARG1                                
020825,001126: 11,2101           63345        INITVEL3           DLOAD    PDVL                                  #                                (PL 2D)
020826,001127: 11,2102           27736                                    MUEARTH                               #  POSITIVE VALUE
020827,001128: 11,2103           02665                                    R2VEC                                 
020828,001129: 11,2104           63256                           UNIT     PDVL                                  #  2D = UNIT(R2VEC)              (PL 8D)
020829,001130: 11,2105           02657                                    R1VEC                                 
020830,001131: 11,2106           41456                           UNIT     PUSH                                  #  8D = UNIT(R1VEC)              (PL 14D)
020831,001132: 11,2107           57435                           VXV      VCOMP                                 #  -N = UNIT(R2VEC) X UNIT(R1VEC)
020832,001133: 11,2110           00003                                    2D                                    
020833,001134: 11,2111           77606                           PUSH                                           #                                (PL 20D)
020834,001135: 11,2112           71350                           LXA,1    DLOAD                                 
020835,001136: 11,2113           03745                                    RTX1                                  
020836,001137: 11,2114           00023                                    18D                                   
020837,001138: 11,2115           62040                           BMN      INCR,1                                

Page 483

020839,001140: 11,2116           22120                                    +2                                    
020840,001141: 11,2117           77767                           DEC      -8         B-14                       
020841,001142: 11,2120           67310                           INCR,1   SLOAD                                 
020842,001143: 11,2121           00012                                    10D                                   
020843,001144: 11,2122           00047                                    X1                                    
020844,001145: 11,2123           77230                           BHIZ     VLOAD                                 #                        (PL 14D)
020845,001146: 11,2124           22126                                    +2                                    
020846,001147: 11,2125           41476                           VCOMP    PUSH                                  #                        (PL 20 D)
020847,001148: 11,2126           77775                           VLOAD                                          #                        (PL 14D)
020848,001149: 11,2127           50235                           VXV      DOT                                   #                        (PL 2D)
020849,001150: 11,2130           71244                           BPL      DLOAD                                 #                        (PL 0D)
020850,001151: 11,2131           22133                                    INITVEL4                              
020851,001152: 11,2132           41476                           DCOMP    PUSH                                  #                        (PL 2D)
020852,001153: 11,2133           67154        INITVEL4           LXA,2    SXA,2                                 
020853,001154: 11,2134           00000                                    0D                                    
020854,001155: 11,2135           02674                                    GEOMSGN                               
020855,001156: 
020856,001157:                                                                                                  #  SET INPUTS UP FOR LAMBERT
020857,001158: 
020858,001159: 11,2136           45150                           LXA,1    CALL                                  
020859,001160: 11,2137           03745                                    RTX1                                  
020860,001161:                                                                                                  #   OPERATE THE LAMBERT CONIC ROUTINE (COASTFLT SUBROUTINE)
020861,001162: 11,2140           25215                                    LAMBERT                               
020862,001163: 
020863,001164:                                                                                                  #  ARRIVED AT SOLUTION IS GOOD ENOUGH ACCORDING TO SLIGHTLY WIDER BOUNDS.
020864,001165: 
020865,001166: 11,2141           77214                           CLEAR    VLOAD                                 
020866,001167: 11,2142           00675                                    GUESSW                                
020867,001168: 11,2143           02746                                    VVEC                                  
020868,001169: 
020869,001170:                                                                                                  #  STORE CALCULATED INITIAL VELOCITY REQUIRED IN VIPRIME
020870,001171: 
020871,001172: 11,2144           17612                           STODL    VIPRIME                               #  INITIAL VELOCITY REQUIRED (+7)
020872,001173: 
020873,001174:                                                                                                  #  IF NUMIT IS ZERO, CONTINUE AT INITVELB, OTHERWISE
020874,001175:                                                                                                  #  SET UP INPUTS FOR ENCKE INTEGRATION (INTEGRVS).
020875,001176: 
020876,001177: 11,2145           02704                                    VTARGTAG                              
020877,001178: 11,2146           45030                           BHIZ     CALL                                  
020878,001179: 11,2147           22224                                    INITVEL7                              
020879,001180: 11,2150           27371                                    INTSTALL                              
020880,001181: 11,2151           43135                           SLOAD    CLEAR                                 
020881,001182: 11,2152           03747                                    RTX2                                  
020882,001183: 11,2153           00263                                    MOONFLAG                              
020883,001184: 11,2154           43030                           BHIZ     SET                                   
020884,001185: 11,2155           22157                                    INITVEL5                              
020885,001186: 11,2156           00063                                    MOONFLAG                              
020886,001187: 11,2157           77775        INITVEL5           VLOAD                                          
020887,001188: 11,2160           03570                                    RINIT                                 
020888,001189: 11,2161           02657                           STORE    R1VEC                                 

Page 484

020890,001191: 11,2162           25535                           STOVL    RCV                                   
020891,001192: 11,2163           03612                                    VIPRIME                               
020892,001193: 11,2164           15543                           STODL    VCV                                   
020893,001194: 11,2165           03503                                    INTIME                                
020894,001195: 11,2166           01517                           STORE    TET                                   
020895,001196: 11,2167           43015                           DAD      CLEAR                                 
020896,001197: 11,2170           03423                                    DELLT4                                
020897,001198: 11,2171           01673                                    INTYPFLG                              
020898,001199: 11,2172           34041                           STCALL   TDEC1                                 
020899,001200: 11,2173           27066                                    INTEGRVS                              
020900,001201: 11,2174           77775                           VLOAD                                          
020901,001202: 11,2175           00025                                    VATT1                                 
020902,001203: 11,2176           02705                           STORE    VTARGET                               
020903,001204: 
020904,001205:                                                                                                  #  IF ITERATION COUNTER (ITCTR) EQ NO. ITERATIONS (NUMIT), CONTINUE AT
020905,001206:                                                                                                  #  INITVELC, OTHERWISE REITERATE LAMBERT AND ENCKE
020906,001207: 
020907,001208: 11,2177           63154                           LXA,2    INCR,2                                
020908,001209: 11,2200           03504                                    ITCTR                                 
020909,001210: 11,2201           00001                                    1D                                    #  INCREMENT ITCTR
020910,001211: 11,2202           55134                           SXA,2    XSU,2                                 
020911,001212: 11,2203           03504                                    ITCTR                                 
020912,001213: 11,2204           02703                                    VTARGTAG                              
020913,001214: 11,2205           46135                           SLOAD    BHIZ                                  #  IF SP(MPAC) EQ 0, CONTINUE AT INITVELC
020914,001215: 11,2206           00050                                    X2                                    
020915,001216: 11,2207           22221                                    INITVEL6                              
020916,001217: 
020917,001218:                                                                                                  #  OFFSET CONIC TARGET VECTGOR
020918,001219: 
020919,001220: 11,2210           52375                           VLOAD    VSU                                   
020920,001221: 11,2211           03604                                    RTARG1                                
020921,001222: 11,2212           00017                                    RATT1                                 
020922,001223: 11,2213           77655                           VAD                                            
020923,001224: 11,2214           02665                                    R2VEC                                 
020924,001225: 11,2215           16665                           STODL    R2VEC                                 
020925,001226: 11,2216           03630                                    COZY4                                 
020926,001227: 11,2217           77650                           GOTO                                           
020927,001228: 11,2220           22056                                    INITVEL2                              #  CONTINUE ITERATING AT INITVEL2
020928,001229: 
020929,001230:                                                                                                  #  COMPUTE THE DELTA VELOCITY
020930,001231: 
020931,001232: 11,2221           77775        INITVEL6           VLOAD                                          
020932,001233: 11,2222           02665                                    R2VEC                                 
020933,001234: 11,2223           03604                           STORE    RTARG1                                
020934,001235: 11,2224           52375        INITVEL7           VLOAD    VSU                                   
020935,001236: 11,2225           03612                                    VIPRIME                               
020936,001237: 11,2226           03576                                    VINIT                                 
020937,001238: 11,2227           27646                           STOVL    DELVEET3                              #  DELVEET3 = VIPRIME-VINIT (+7)
020938,001239: 11,2230           02705                                    VTARGET                               
020939,001240: 11,2231           03620                           STORE    VTPRIME                               
020940,001241: 11,2232           46135                           SLOAD    BHIZ                                  
020941,001242: 11,2233           03747                                    RTX2                                  

Page 485

020943,001244: 11,2234           22251                                    INITVELX                              
020944,001245: 11,2235           70575                           VLOAD    VSR2                                  
020945,001246: 11,2236           03620                                    VTPRIME                               
020946,001247: 11,2237           27620                           STOVL    VTPRIME                               
020947,001248: 11,2240           03612                                    VIPRIME                               
020948,001249: 11,2241           77742                           VSR2                                           
020949,001250: 11,2242           27612                           STOVL    VIPRIME                               
020950,001251: 11,2243           03604                                    RTARG1                                
020951,001252: 11,2244           77742                           VSR2                                           
020952,001253: 11,2245           27604                           STOVL    RTARG1                                
020953,001254: 11,2246           03646                                    DELVEET3                              
020954,001255: 11,2247           77742                           VSR2                                           
020955,001256: 11,2250           03646                           STORE    DELVEET3                              
020956,001257: 11,2251           77201        INITVELX           SETPD    VLOAD                                 
020957,001258: 11,2252           00001                                    0D                                    
020958,001259: 11,2253           03604                                    RTARG1                                
020959,001260: 11,2254           37415                           STCALL   RTARG                                 
020960,001261: 11,2255           01340                                    NORMEX                                
020961,001262: 
020962,001263:                                                                                                  #  ***** END OF INITVEL ROUTINE *****
020963,001264: 

Page 486

020965,001266:                                                                                                  #  ***** MIDGIM *****
020966,001267:                                                                                                  #  MOD NO. 0, BY WILLMAN, SUBROUTINE RENDGUID, LOG P34-P35, P74-P75
020967,001268:                                                                                                  #  REVISION 03, 17 FEB 67
020968,001269: 
020969,001270:                                                                                                  #  IF THE ACTIVE VEHICLE IS DOING THE COMPUTATION, MIDGIM COMPUTES
020970,001271:                                                                                                  #  THE POSITIVE MIDDLE GIMBAL ANGLE OF THE ACTIVE VEHICLE TO THE INPUT
020971,001272:                                                                                                  #  DELTA VELOCITY VECTOR (0D IN PUSY LIST), OTHERWISE
020972,001273:                                                                                                  #  MIDGIM CONVERTS THE INPUT DELTA VELOCITY VECTOR FROM INERTIAL COORDIN-
020973,001274:                                                                                                  #  ATES TO LOCAL VERTICAL COORDINATES OF THE ACTIVE VEHICLE.
020974,001275: 
020975,001276:                                                                                                  #  ** INPUTS **
020976,001277:                                                                                                  #        NAME    MEANING                                         UNITS/SCALING/MODE
020977,001278:                                                                                                  #        AVFLAG  INT FLAG -- 0 IS CSM ACTIVE, 1 IS LEM ACTIVE    BIT
020978,001279:                                                                                                  #        RINIT   ACTIVE VEHICLE RADIUS VECTOR                    METERS/CSEC (+7) VT
020979,001280:                                                                                                  #        VINIT   ACTIVE VEHICLE VELOCITY VECTOR                  METERS/CSEC (+7) VT
020980,001281:                                                                                                  #        0D(PL)  ACTIVE VEHICLE DELTA VELOCITY VECTOR            METERS/CSEC (+7) VT
020981,001282: 
020982,001283:                                                                                                  #  ** OUTPUTS **
020983,001284:                                                                                                  #     NAME       MEANING                                         UNITS/SCALING/MODE
020984,001285:                                                                                                  #     +MGA       + MIDDLE GIMBAL ANGLE                           REVOLUTIONS (+0) DP
020985,001286:                                                                                                  #     DELVLVC    DELTA VELOCITY VECTOR IN LV COORD.              METERS/CSEC (+7) VT
020986,001287:                                                                                                  #     MGLVFLAG   INT FLAG: 0 IS +MGA COMUTED, 1 IS DELVLVC COMP. BIT
020987,001288: 
020988,001289:                                                                                                  #  ** CALLING SEQUENCE **
020989,001290:                                                                                                  #        L       CALL
020990,001291:                                                                                                  #        L+1             MIDGIM
020991,001292:                                                                                                  #        L+2     (RETURN -- ALWAYS)
020992,001293: 
020993,001294:                                                                                                  #  ** NO SUBROUTINES CALLED **
020994,001295: 
020995,001296:                                                                                                  #  ** DEBRIS -- ERASABLE TEMPORARY USAGE **
020996,001297:                                                                                                  #        A,Q,L, PUSH LIST, MPAC.
020997,001298: 
020998,001299:                                                                                                  #  ** ALARMS -- NONE **
020999,001300: 

Page 487

021001,001302:                                                                                                  #  MIDDLE GIMBAL ANGLE COMPUTATION
021002,001303: 04,2000                                           SETLOC   MIDDGIM                               
021003,001304: 04,2000                                           BANK                                           
021004,001305: 
021005,001306: 04,2651                                           COUNT*   $$/MIDG                               
021006,001307: 
021007,001308: 04,2651           20000 00000  HALFREV            2DEC     1          B-1                        
021008,001309: 
021009,001310: 04,2653           43014        MIDGIM             BON      BOFF                                  
021010,001311: 04,2654           01312                                    AVFLAG                                
021011,001312: 04,2655           10673                                    MIDGIM1                               
021012,001313: 04,2656           02747                                    COMPUTER                              
021013,001314: 04,2657           10676                                    GET.LVC                               
021014,001315: 
021015,001316:                                                                                                  #  COMPUTE +MGA IF AVFLAG AND COMPUTER HAVE OPPOSITE VALUES.
021016,001317: 
021017,001318: 04,2660           53575        GET+MGA            VLOAD    UNIT                                  #  PL 0D) V (+7) TO MPAC UNITIZE UV (+1)
021018,001319: 04,2661           72441                           DOT      SL1                                   #  DOT UV WITH Y(STABLE MEMBER) AND RESCALE
021019,001320: 04,2662           01744                                    REFSMMAT   +6                         #  FROM +2 TO +1 FOR ASIN ROUTINE
021020,001321: 04,2663           51136                           ARCSIN   BPL                                   
021021,001322: 04,2664           10670                                    SETMGA                                
021022,001323: 04,2665           43215                           DAD      DAD                                   #  CONVERT -MGA TO +MGA BY
021023,001324: 04,2666           10652                                    HALFREV                               #  ADDING ONE REVOLUTION
021024,001325: 04,2667           10652                                    HALFREV                               
021025,001326: 04,2670           03626        SETMGA             STORE    +MGA                                  
021026,001327: 04,2671           43414                           CLR      RVQ                                   #  CLEAR MGLVFLAG TO INDICATE +MGA CALC
021027,001328: 04,2672           02675                                    MGLVFLAG                              #  AND EXIT
021028,001329: 
021029,001330: 04,2673           77614        MIDGIM1            BOFF                                           
021030,001331: 04,2674           02747                                    COMPUTER                              
021031,001332: 04,2675           10660                                    GET+MGA                               
021032,001333: 
021033,001334:                                                                                                  #  COMPUTE DELVLVC IF AVFLAG AND COMPUTER HAVE SAME VALUES
021034,001335: 
021035,001336: 04,2676           53575        GET.LVC            VLOAD    UNIT                                  #  (PL 6D) R (+29) IN MPAC UNITZE UR
021036,001337: 04,2677           03570                                    RINIT                                 
021037,001338: 04,2700           77676                           VCOMP                                          #  U(-R)
021038,001339: 04,2701           00023                           STORE    18D                                   #  U(-R) TO 18D
021039,001340: 04,2702           53435                           VXV      UNIT                                  #  U(-R)*V EQ V*U(R), U(V*R)
021040,001341: 04,2703           03576                                    VINIT                                 
021041,001342: 04,2704           00015                           STORE    12D                                   #  U(V*R) TO 12D
021042,001343: 04,2705           53435                           VXV      UNIT                                  #  U(V*R)*U(-R), U((V*R)*(-R))
021043,001344: 04,2706           00023                                    18D                                   
021044,001345: 04,2707           24007                           STOVL    6D                                    #  TRANSFORMATION MATRIX IS IN 6D (+1)
021045,001346: 04,2710           00001                                    0D                                    #  DELTA V (+7) IN 0D
021046,001347: 04,2711           76521                           MXV      VSL1                                  #  CONVERT FROM INER COOR TO LV COOR (+8)
021047,001348: 04,2712           00007                                    6D                                    #  AND SCALE +7 IN MPAC
021048,001349: 04,2713           03405                           STORE    DELVLVC                               #  STORE IN DELVLVC (+7(
021049,001350: 04,2714           43414                           SET      RVQ                                   #  SET MGLVFLAG TO INDICATE LVC CALC
021050,001351: 04,2715           02475                                    MGLVFLAG                              #  AND EXIT
021051,001352: 
021052,001353:                                                                                                  #  ***** END OF MIDGIM ROUTINE *****
021053,001354: 

Page 488

021055,001356: 04,2716           77160        SELECTMU           AXC,1    AXT,2                                 
021056,001357: 04,2717           00002                                    2D                                    
021057,001358: 04,2720           00000                                    0D                                    
021058,001359: 04,2721           77614                           BOFF                                           
021059,001360: 04,2722           04343                                    CMOONFLG                              
021060,001361: 04,2723           10727                                    SETMUER                               
021061,001362: 04,2724           77160                           AXC,1    AXT,2                                 
021062,001363: 04,2725           00012                                    10D                                   
021063,001364: 04,2726           00002                                    2D                                    
021064,001365: 04,2727           66143        SETMUER            DLOAD*   SXA,1                                 
021065,001366: 04,2730           11635                                    MUTABLE    +4,1                       
021066,001367: 04,2731           03745                                    RTX1                                  
021067,001368: 04,2732           23752                           STODL*   RTSR1/MU                              
021068,001369: 04,2733           11627                                    MUTABLE    -2,1                       
021069,001370: 04,2734           54214                           BOFF     SR                                    
021070,001371: 04,2735           04343                                    CMOONFLG                              
021071,001372: 04,2736           10740                                    RTRNMU                                
021072,001373: 04,2737           20607                                    6D                                    
021073,001374: 04,2740           03750        RTRNMU             STORE    RTMU                                  
021074,001375: 04,2741           43134                           SXA,2    CLEAR                                 
021075,001376: 04,2742           03746                                    RTX2                                  
021076,001377: 04,2743           01271                                    FINALFLG                              
021077,001378: 04,2744           77650                           GOTO                                           
021078,001379: 04,2745           73005                                    VN1645                                
021079,001380: 

Page 489

021081,001382:                                                                                                  #  ***** PERIAPO *****
021082,001383:                                                                                                  #  MOD NO -1                     LOG SECTION -- P34-P35, P74-P75
021083,001384:                                                                                                  #  MOD BY WHITE, P.              DATE 18 JAN 68
021084,001385: 
021085,001386:                                                                                                  #  FUNCTIONAL DESCRIPTION
021086,001387:                                                                                                  #        THIS SUBROUTINE COMPUTES THE TWO BODY APOCENTER AND PERICENTER
021087,001388:                                                                                                  #        ALTITUDES GIVEN THE POSITION AND VELOCITY VECTORS FOR A POINT ON
021088,001389:                                                                                                  #        THE TRAJECTORY AND THE PRIMARY BODY.
021089,001390: 
021090,001391:                                                                                                  #        SETRAD IS CALLED TO DETERMINE THE RADIUS OF THE PRIMARY BODY.
021091,001392: 
021092,001393:                                                                                                  #        APSIDES IS CALLED TO SOVE FOR THE TWO BODY RADII OF APOCENTER AND
021093,001394:                                                                                                  #        PERICENTER AND THE ECCENTRICITY OF THE TRAJECTORY.
021094,001395: 
021095,001396:                                                                                                  #  CALLING SEQUENCE
021096,001397:                                                                                                  #        L       CALL
021097,001398:                                                                                                  #        L+1             PERIAPO
021098,001399:                                                                                                  #        L+2     (RETURN -- ALWAYS)
021099,001400: 
021100,001401:                                                                                                  #  INPUT
021101,001402:                                                                                                  #        (1)     RVEC    POSITION VECTOR IN METERS
021102,001403:                                                                                                  #                        SCALE FACTOR -- EARTH +29, MOON +27
021103,001404:                                                                                                  #        (2)     VVEC    VELOCITY VECTORY IN METERS/CENTISECOND
021104,001405:                                                                                                  #                        SCALE FACTOR -- EARTH +7, MOON +5
021105,001406:                                                                                                  #        (3)     X1      PRIMARY BODY INDICATOR
021106,001407:                                                                                                  #                        EARTH -2, MOON -10
021107,001408: 
021108,001409:                                                                                                  #  OUTPUT
021109,001410:                                                                                                  #        (1)     2D      APOCENTER RADIUS IN METERS
021110,001411:                                                                                                  #                        SCALE FACTOR -- EARTH +29, MOON +27
021111,001412:                                                                                                  #        (2)     4D      APOCENTER ALTITUDE IN METERS
021112,001413:                                                                                                  #                        SCALE FACTOR -- EARTH +29, MOON +27
021113,001414:                                                                                                  #        (3)     6D      PERICENTER RADIUS IN METERS
021114,001415:                                                                                                  #                        SCALE FACTOR -- EARTH +29, MOON +27
021115,001416:                                                                                                  #        (4)     8D      PERICENTER ALTITUDE IN METERS
021116,001417:                                                                                                  #                        SCALE FACTOR -- EARTH +29, MOON +27
021117,001418:                                                                                                  #        (5)     ECC     ECCENTRICITY OF CONIC TRAJECTORY
021118,001419:                                                                                                  #                        SCALE FACTOR -- +3
021119,001420:                                                                                                  #        (6)     XXXALT  RADIUS OF THE PRIMARY BODY IN METERS
021120,001421:                                                                                                  #                        SCALE FACTOR -- EARTH +29, MOON +27
021121,001422:                                                                                                  #        (7)     PUSHLOC EQUALS 10D
021122,001423: 
021123,001424:                                                                                                  #  SUBROUTINES USED
021124,001425:                                                                                                  #        SETRAD

Page 490

021126,001427:                                                                                                  #        APSIDES
021127,001428: 
021128,001429: 22,2000                                           SETLOC   APOPERI                               
021129,001430: 22,2000                                           BANK                                           
021130,001431: 
021131,001432: 22,3310                                           COUNT*   $$/PERAP                              
021132,001433: 
021133,001434: 22,3310           00302 17755  RPAD               2DEC     6373338    B-29                       #  STANDARD RADIUS OF PAD 37-B.
021134,001435:                                                                                                  #  = 20 909 901.57 FT
021135,001436: 
021136,001437: 22,3312           53754        PERIAPO1           LXA,2    VSR*                                  
021137,001438: 22,3313           03746                                    RTX2                                  
021138,001439: 22,3314           57176                                    0,2                                   
021139,001440: 22,3315           26746                           STOVL    VVEC                                  
021140,001441: 22,3316           53750                           LXA,1    VSR*                                  
021141,001442: 22,3317           03745                                    RTX1                                  
021142,001443: 22,3320           57176                                    0,2                                   
021143,001444: 22,3321           02657                           STORE    RVEC                                  
021144,001445: 22,3322           45020        PERIAPO            STQ      CALL                                  
021145,001446: 22,3323           01340                                    NORMEX                                
021146,001447: 22,3324           45340                                    SETRAD                                
021147,001448: 22,3325           37456                           STCALL   XXXALT                                
021148,001449: 22,3326           25671                                    APSIDES                               
021149,001450: 22,3327           41401                           SETPD    PUSH                                  #  2D = APOCENTER RADIUS         B29 OR B27
021150,001451: 22,3330           00003                                    2D                                    
021151,001452: 22,3331           65225                           DSU      PDDL                                  #  4D = APOGEE ALTITUDE          B29 OR B27
021152,001453: 22,3332           03456                                    XXXALT                                
021153,001454: 22,3333           00001                                    0D                                    
021154,001455: 22,3334           45206                           PUSH     DSU                                   #  6D = PERICENTER RADIUS        B29 OR B27
021155,001456: 22,3335           03456                                    XXXALT                                
021156,001457: 22,3336           52006                           PUSH     GOTO                                  #  8D = PERIGEE ALTITUDE         B29 OR B27
021157,001458: 22,3337           01340                                    NORMEX                                

Page 491

021159,001460: 22,3340           41545        SETRAD             DLOAD    PUSH                                  
021160,001461: 22,3341           05311                                    RPAD                                  
021161,001462: 22,3342           63130                           SXA,1    INCR,2                                
021162,001463: 22,3343           00047                                    X2                                    
021163,001464: 22,3344           00002                                    2D                                    
021164,001465: 22,3345           46135                           SLOAD    BHIZ                                  
021165,001466: 22,3346           00050                                    X2                                    
021166,001467: 22,3347           45353                                    SETRADX                               
021167,001468: 22,3350           51575                           VLOAD    ABVAL                                 
021168,001469: 22,3351           02026                                    RLS                                   
021169,001470: 22,3352           77725                           PDDL                                           
021170,001471: 22,3353           43545        SETRADX            DLOAD    RVQ                                   
021171,001472: 

Page 492

021173,001474: 22,3354           77620        PRECSET            STQ                                            
021174,001475: 22,3355           01340                                    NORMEX                                
021175,001476: 22,3356           36635                           STCALL   TDEC2                                 
021176,001477: 22,3357           27036                                    LEMPREC                               
021177,001478: 22,3360           77624                           CALL                                           
021178,001479: 22,3361           45372                                    LEMSTORE                              
021179,001480: 22,3362           77745                           DLOAD                                          
021180,001481: 22,3363           02635                                    TDEC2                                 
021181,001482: 22,3364           34041                           STCALL   TDEC1                                 
021182,001483: 22,3365           27022                                    CSMPREC                               
021183,001484: 22,3366           77624                           CALL                                           
021184,001485: 22,3367           45402                                    CSMSTORE                              
021185,001486: 22,3370           77650                           GOTO                                           
021186,001487: 22,3371           01340                                    NORMEX                                
021187,001488: 22,3372           43175        LEMSTORE           VLOAD    BOFF                                  
021188,001489: 22,3373           00001                                    RATT                                  
021189,001490: 22,3374           01352                                    AVFLAG                                
021190,001491: 22,3375           45406                                    PASSIVE                               
021191,001492: 22,3376           27540        ACTIVE             STOVL    RACT3                                 
021192,001493: 22,3377           00007                                    VATT                                  
021193,001494: 22,3400           03546                           STORE    VACT3                                 
021194,001495: 22,3401           77616                           RVQ                                            
021195,001496: 22,3402           43175        CSMSTORE           VLOAD    BOFF                                  
021196,001497: 22,3403           00001                                    RATT                                  
021197,001498: 22,3404           01352                                    AVFLAG                                
021198,001499: 22,3405           45376                                    ACTIVE                                
021199,001500: 22,3406           27554        PASSIVE            STOVL    RPASS3                                
021200,001501: 22,3407           00007                                    VATT                                  
021201,001502: 22,3410           03562                           STORE    VPASS3                                
021202,001503: 22,3411           77616                           RVQ                                            
021203,001504: 

Page 493

021205,001506: 22,3412           53754        VECSHIFT           LXA,2    VSR*                                  
021206,001507: 22,3413           03746                                    RTX2                                  
021207,001508: 22,3414           57176                                    0,2                                   
021208,001509: 22,3415           63350                           LXA,1    PDVL                                  
021209,001510: 22,3416           03745                                    RTX1                                  
021210,001511: 22,3417           63257                           VSR*     PDVL                                  
021211,001512: 22,3420           57176                                    0,2                                   
021212,001513: 22,3421           77616                           RVQ                                            
021213,001514: 

Page 494

021215,001516: 22,3422           53754        SHIFTR1            LXA,2    SL*                                   
021216,001517: 22,3423           03746                                    RTX2                                  
021217,001518: 22,3424           57576                                    0,2                                   
021218,001519: 22,3425           77616                           RVQ                                            
021219,001520: 

Page 495

021221,001522:                                                                                                  #  PROGRAM DESCRIPTION
021222,001523: 
021223,001524:                                                                                                  #  SUBROUTINE NAME       R36     OUT-OF-PLANE RENDEZVOUS ROUTINE
021224,001525:                                                                                                  #  MOD NO. 0             DATE 22 DECEMBER 67
021225,001526:                                                                                                  #  MOD BY N.M.NEVILLE    LOG SECTION EXTENDED VERBS
021226,001527: 
021227,001528:                                                                                                  #  FUNCTIONAL DESCRIPTION
021228,001529: 
021229,001530:                                                                                                  #  TO DISPLAY AT ASTRONAUT REQUEST LGC CALCULATED RENDEZVOUS
021230,001531:                                                                                                  #  OUT-OF-PLANE PARAMETERS (Y, YDOT, PSI).  (REQUESTED BY DSKY).
021231,001532: 
021232,001533:                                                                                                  #  CALLING SEQUENCE
021233,001534:                                                                                                  #        ASTRONAUT REQUEST THROUGH DSKY V 90 E
021234,001535: 
021235,001536:                                                                                                  #  SUBROUTINES CALLED
021236,001537:                                                                                                  #        EXDSPRET
021237,001538:                                                                                                  #        GOMARKF
021238,001539:                                                                                                  #        CSMPREC
021239,001540:                                                                                                  #        LEMPREC
021240,001541:                                                                                                  #        SGNAGREE
021241,001542:                                                                                                  #        LOADTIME
021242,001543: 
021243,001544:                                                                                                  #  NORMAL EXIT MODES
021244,001545:                                                                                                  #        ASTRONAUT REQUEST THROUGH DSKY TO TERMINATE PROGRAM V 34 E
021245,001546: 
021246,001547:                                                                                                  #  ALARM OR ABORT EXIT MODES
021247,001548:                                                                                                  #        NONE
021248,001549: 
021249,001550:                                                                                                  #  OUTPUT
021250,001551:                                                                                                  #        DECIMAL DISPLAY OF TIME, Y, YDOT AND PSI
021251,001552: 
021252,001553:                                                                                                  #        DISPLAYED VALUES Y, YDOT, AND PSI, ARE STORED IN ERASABLE
021253,001554:                                                                                                  #        REGISTERS RANGE, RRATE, AND RTHETA RESPECTIVELY.
021254,001555: 
021255,001556:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED
021256,001557:                                                                                                  #        CSM AND LEM STATE VECTORS
021257,001558: 
021258,001559:                                                                                                  #  DEBRIS
021259,001560:                                                                                                  #        CENTRALS A,Q,L
021260,001561:                                                                                                  #        OTHER:  THOSE USED BY THE ABOVE LISTED SUBROUTINES
021261,001562: 
021262,001563: 20,2000                                           BANK     20                                    
021263,001564: 04,2000                                           SETLOC   R36LM                                 
021264,001565: 04,2000                                           BANK                                           

Page 496

021266,001567: 04,2746  E4,1726                                  EBANK=   RPASS36                               
021267,001568: 04,2746                                           COUNT*   $$/R36                                
021268,001569: 
021269,001570: 04,2746           22007        R36                ZL                                             
021270,001571: 04,2747           34714                           CAF      ZERO                                  #  SET TIME OF EVENT TO ZERO FOR FIRST
021271,001572: 04,2750           53052                           DXCH     DSPTEMX                               #  DISPLAY
021272,001573: 04,2751           33101                           CAF      V06N16N                               
021273,001574: 04,2752           04555                           TC       BANKCALL                              
021274,001575: 04,2753           20465                           CADR     GOMARKF                               
021275,001576: 04,2754           15423                           TCF      ENDEXT                                #  TERMINATE
021276,001577: 04,2755           12757                           TCF      +2                                    #  PROCEED
021277,001578: 04,2756           12751                           TCF      -5                                    #  RECYCLE FOR ASTRONAUT INPUT TIME
021278,001579: 04,2757           53052                           DXCH     DSPTEMX                               
021279,001580: 04,2760           00006                           EXTEND                                         
021280,001581: 04,2761           13070                           BZF      LREGCHK                               #  A-REG ZERO GOTO CHECK L-REG FOR ZERO
021281,001582: 04,2762           52155        ASTROTIM           DXCH     MPAC                                  #  A-REG NON-ZERO, TIME = ASTRO INPUT TIME
021282,001583: 04,2763           06006                           TC       INTPRET                               
021283,001584: 04,2764           77634                           RTB                                            
021284,001585: 04,2765           45713                                    DPMODE                                
021285,001586: 04,2766           34041        R36INT             STCALL   TDEC1                                 
021286,001587: 04,2767           27036                                    OTHPREC                               
021287,001588: 04,2770           63375                           VLOAD    PDVL                                  
021288,001589: 04,2771           00007                                    VATT                                  
021289,001590: 04,2772           00001                                    RATT                                  #  -
021290,001591: 04,2773           02327                           STORE    RPASS36                               #  R
021291,001592: 04,2774           63256                           UNIT     PDVL                                  #  P
021292,001593: 04,2775           53435                           VXV      UNIT                                  #  -
021293,001594: 04,2776           77626                           STADR                                          
021294,001595: 04,2777           61442                           STODL    UNP36                                 #  U
021295,001596: 04,3000           00015                                    TAT                                   
021296,001597: 04,3001           34041                           STCALL   TDEC1                                 
021297,001598: 04,3002           27022                                    THISPREC                              
021298,001599: 04,3003           63375                           VLOAD    PDVL                                  #                        -
021299,001600: 04,3004           00007                                    VATT                                  #  VELOCITY VECTOR       V       00D
021300,001601: 04,3005           00001                                    RATT                                  #                         A
021301,001602: 04,3006           77725                           PDDL                                           
021302,001603: 04,3007           00015                                    TAT                                   #  SAVE TIME IN LOCATION 30D FOR REDISPLAY
021303,001604: 04,3010           24037                           STOVL    30D                                   #                        _
021304,001605: 04,3011           41406                           PUSH     PUSH                                  #  POSITION VECTOR       R   IN  06D AND 12D
021305,001606: 04,3012           63245                           BVSU     PDVL                                  #                        _A  _
021306,001607: 04,3013           02327                                    RPASS36                               #  LINE OF SIGHT VECTOR  R - R   12D
021307,001608: 04,3014           72441                           DOT      SL1                                   #                         P   A
021308,001609: 04,3015           02335                                    UNP36                                 #      _   _
021309,001610: 04,3016           26321                           STOVL    RANGE                                 #  Y = U . R
021310,001611: 04,3017           00001                                    00D                                   #           A
021311,001612: 04,3020           72441                           DOT      SL1                                   
021312,001613: 04,3021           02335                                    UNP36                                 #  .   _   _
021313,001614: 04,3022           26323                           STOVL    RRATE                                 #  Y = U . V
021314,001615: 04,3023           00007                                    06D                                   #  _        A

Page 497

021316,001617: 04,3024           41456                           UNIT     PUSH                                  #  U  = UNIT ( R  )              18D
021317,001618: 04,3025           47235                           VXV      VXV                                   #   RA          A
021318,001619: 04,3026           00001                                    00D                                   #   _    _     _     _
021319,001620: 04,3027           00023                                    18D                                   #  (U  X V ) X U   = U
021320,001621: 04,3030           53552                           VSL2     UNIT                                  #    RA   A     RA    A
021321,001622: 04,3031           77656                           UNIT                                           
021322,001623: 04,3032           24001                           STOVL    00D                                   #  UNIT HORIZONTAL IN FORWARD DIR. 00D
021323,001624: 04,3033           00023                                    18D                                   
021324,001625: 04,3034           74241                           DOT      VXSC                                  #  _
021325,001626: 04,3035           00015                                    12D                                   #  U
021326,001627: 04,3036           77752                           VSL2                                           #   L
021327,001628: 04,3037           53445                           BVSU     UNIT                                  
021328,001629: 04,3040           77656                           UNIT                                           
021329,001630: 04,3041           50206                           PUSH     DOT                                   #  LOS PROJECTED INTO HORIZONTAL  12D
021330,001631: 04,3042           00001                                    00D                                   #  PLANE
021331,001632: 04,3043           65552                           SL1      ARCCOS                                #               _   _
021332,001633: 04,3044           26325                           STOVL    RTHETA                                #  PSI = ARCCOS(U . U )
021333,001634: 04,3045           50235                           VXV      DOT                                   #                A   L
021334,001635: 04,3046           00001                                    00D                                   
021335,001636: 04,3047           71244                           BPL      DLOAD                                 
021336,001637: 04,3050           11055                                    R36TAG2                               
021337,001638: 04,3051           11467                                    LODPMAX                               
021338,001639: 04,3052           77625                           DSU                                            
021339,001640: 04,3053           02325                                    RTHETA                                
021340,001641: 04,3054           02325                           STORE    RTHETA                                
021341,001642: 04,3055           47145        R36TAG2            DLOAD    RTB                                   
021342,001643: 04,3056           00037                                    30D                                   
021343,001644: 04,3057           45541                                    SGNAGREE                              
021344,001645: 04,3060           01052                           STORE    DSPTEMX                               
021345,001646: 04,3061           77776                           EXIT                                           
021346,001647: 04,3062           33102                           CAF      V06N90N                               #  DISPLAY Y, YDOT, AND PSI.
021347,001648: 04,3063           04555                           TC       BANKCALL                              
021348,001649: 04,3064           20465                           CADR     GOMARKF                               
021349,001650: 04,3065           15423                           TCF      ENDEXT                                #  TERMINATE
021350,001651: 04,3066           15423                           TCF      ENDEXT                                #  PROCEED, END OF PROGRAM
021351,001652: 04,3067           12751                           TCF      R36        +3                         #  REDISPLAY OUTPUT
021352,001653: 04,3070           56001        LREGCHK            XCH      L                                     
021353,001654: 04,3071           00006                           EXTEND                                         
021354,001655: 04,3072           13075                           BZF      ENTTIM2                               #  L-REG ZERO, SET TIME = PRESENT TIME
021355,001656: 04,3073           56001                           XCH      L                                     #  L-REG NON ZERO, TIME = ASTRO INPUT TIME
021356,001657: 04,3074           12762                           TCF      ASTROTIM                              
021357,001658: 04,3075           06006        ENTTIM2            TC       INTPRET                               
021358,001659: 04,3076           52034                           RTB      GOTO                                  #  ASTRO-SELECTED PRESENT TIME
021359,001660: 04,3077           45505                                    LOADTIME                              
021360,001661: 04,3100           10766                                    R36INT                                
021361,001662: 04,3101           01420        V06N16N            VN       00616                                 
021362,001663: 04,3102           01532        V06N90N            VN       00690                                 

End of include-file P34-35_P74-75.agc.  Parent file is MAIN.agc