Source Code

These source-code files are part of a reconstructed copy of Comanche 45/2 (AKA Manche45 revision 2), the final, flown mission release of the Apollo 10 Command Module (CM) Apollo Guidance Computer (AGC) software. Comanche 45/2 was preceded by Comanche 44 and Comanche 45. The reconstruction is believed to be exactly accurate, but in the absence of an actual Apollo-era listing of Comanche 45/2, some explanation of the reconstruction process is needed to insure confidence in that accuracy.

The starting point was the source code of Comanche 45 (itself previously accurately reconstructed). Comanche 45 source code was then modified by incorporating changes known from contemporary documentation to have been made between revisions 45 and 45/2. The now-reconstructed Comanche 45/2 source code was verified by assembling it and checking that the assembled code had the expected known-correct memory-bank checksums. Note that page numbers in the reconstructed code tend to match those in the Comanche 55, the most-similar revision of Comanche for which we have access to an actual non-reconstructed hardcopy; the source code would likely have different page numbers in a contemporary Comanche 45 listing.

Annotations that were not present in the contemporary source code have been added to the reconstructed code to justify each change relative to Comanche 44. Here's a guide to the Apollo documentation referenced in those annotations:
Comments expected to have been present in the original source code are prefixed with a single '#' symbol, whereas comments added later are prefixed by "##" or "###". Report any errors noted by creating an issue report at the Virtual AGC Project's GitHub repository.

036481,000002:                                                                                                  ## Copyright:   Public domain.
036482,000003:                                                                                                  ## Filename:    ENTRY_LEXICON.agc
036483,000004:                                                                                                  ## Purpose:     A section of Manche45 revision 2.
036484,000005:                                                                                                  ##              It is part of the reconstructed source code for the
036485,000006:                                                                                                  ##              final, flown release of the flight software for the Command
036486,000007:                                                                                                  ##              Module's (CM) Apollo Guidance Computer (AGC) for Apollo 10.
036487,000008:                                                                                                  ##              The code has been recreated from a copy of Comanche 055. It
036488,000009:                                                                                                  ##              has been adapted such that the resulting bugger words
036489,000010:                                                                                                  ##              exactly match those specified for Manche 45/2 in NASA drawing
036490,000011:                                                                                                  ##              2021153D, which gives relatively high confidence that the
036491,000012:                                                                                                  ##              reconstruction is correct.
036492,000013:                                                                                                  ## Assembler:   yaYUL
036493,000014:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
036494,000015:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
036495,000016:                                                                                                  ## Mod history: 2020-12-24 MAS  Created from Comanche 45.
036496,000017: 

Page 837

036498,000019:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE *         COMPUTER NAME
036499,000020:                                                                                                  #  --------      -----------                             ------- -----           -------- ----
036500,000021:                                                                                                  #  -
036501,000022:                                                                                                  #  URT0          INITIAL TARGET VECTOR                   2 (UNIT VECTOR)         = RTINIT
036502,000023:                                                                                                  #  -
036503,000024:                                                                                                  #  UZ            UNIT VECTOR NORTH                       1                       = UNITW
036504,000025:                                                                                                  #  -
036505,000026:                                                                                                  #  V             VELOCITY VECTOR                         2 VSAT                  = VEL
036506,000027:                                                                                                  #  -
036507,000028:                                                                                                  #  R             POSITION VECTOR                         2 EXP 29 METERS         = RN
036508,000029:                                                                                                  #  -
036509,000030:                                                                                                  #  VI            INERTIAL VELOCITY                       128 M/CENTISEC          = VN
036510,000031:                                                                                                  #  -
036511,000032:                                                                                                  #  RTE           VECTOR EAST AT INITIAL TARGET           2                       = RTEAST
036512,000033:                                                                                                  #  -
036513,000034:                                                                                                  #  UTR           NORMAL TO RTE AND UZ                    2                       = RTNORM
036514,000035:                                                                                                  #  -
036515,000036:                                                                                                  #  URT           TARGET VECTOR                           2                       = RT
036516,000037:                                                                                                  #  -
036517,000038:                                                                                                  #  UNI           UNIT NORMAL TO TRAJECTORY PLANE         2       
036518,000039:                                                                                                  #  -
036519,000040:                                                                                                  #  DELV          INTEGRATED ACCEL. FROM PIPAS            5.85 16384 CM/S
036520,000041:                                                                                                  #  -
036521,000042:                                                                                                  #  G             GRAVITY VECTOR                          128 M/CENTISEC          = GDT/2
036522,000043: 
036523,000044:                                                                                                  #  A0            INITIAL DRAG FOR UPCONTRL               805 FPSS                FPSS=FT/SEC/SEC
036524,000045: 
036525,000046:                                                                                                  #  AHOOKDV       TERM IN GAMMAL CALC. = AHOOK DVL        16
036526,000047: 
036527,000048:                                                                                                  #  A1            DRAG VALUE IN FACTOR CALCULATION        805 FPSS
036528,000049: 
036529,000050:                                                                                                  #  ALP           CONST FOR UPCONTRL                      1
036530,000051: 
036531,000052:                                                                                                  #  ASKEP         KEPLER RANGE                            21600 NM                NM = NAUTICAL MILE
036532,000053: 
036533,000054:                                                                                                  #  ASP1          FINAL PHASE RANGE                       21600 NM
036534,000055: 
036535,000056:                                                                                                  #  ASPUP         UP-RANGE                                21600 NM
036536,000057: 
036537,000058:                                                                                                  #  ASP3          GAMMA CORRECTION                        21600 NM
036538,000059: 
036539,000060:                                                                                                  #  ASPDWN        RANGE DOWN TO PULL-UP                   21600 NM
036540,000061: 
036541,000062:                                                                                                  #  ASP           PREDICTED RANGE                         21600 NM                NOT STORED
036542,000063: 
036543,000064:                                                                                                  #  COSG          COSINE(GAMMAL)                          2                       = COSG/2
036544,000065: 
036545,000066:                                                                                                  #  C/D0          RECIPROCAL DRAG, -4/D0 B-8              64/FPSS
036546,000067: 
036547,000068:                                                                                                  #  D             TOTAL ACCELERATION                      805 FPSS
036548,000069: 
036549,000070:                                                                                                  #  D0            CONTROLLED CONSTANT D                   805 FPSS
036550,000071: 
036551,000072:                                                                                                  #  DHOOK         TERM IN GAMMAL COMPUTATION              805 FPSS
036552,000073: 
036553,000074:                                                                                                  #  DIFF          THETNM-ASP (RANGE DIFFERENCE)           21600 NM
036554,000075: 
036555,000076:                                                                                                  #  DIFFOLD       PREVIOUS VALUE OF DIFF                  21600 NM
036556,000077: 
036557,000078:                                                                                                  #  DLEWD         CHANGE IN LEWD                          1
036558,000079: 
036559,000080:                                                                                                  #  DR            REFERENCE DRAG FOR DOWNCONTROL          805 FPSS                NOT STORED
036560,000081: 
036561,000082:                                                                                                  #  DREFR         REFERENCE DRAG                          805 FPSS                NOT STORED
036562,000083: 
036563,000084:                                                                                                  #  DVL           VS1-VL                                  2 VSAT
036564,000085: 
036565,000086:                                                                                                  #  E             ECCENTRICITY                            4                       NOT STORED
036566,000087: 
036567,000088:                                                                                                  #  F1            DRANGE/D DRAG   (FINAL PHASE)           2700/805                = FX +5
036568,000089: 
036569,000090:                                                                                                  #  F2            DRANGE/D RDOT   (FINAL PHASE)           2700/2VS NM/FPS         = FX +4

Page 838

036571,000092: 
036572,000093:                                                                                                  #  F3            DRANGE/D (L/D)                          2700 NM                 = FX
036573,000094: 
036574,000095:                                                                                                  #  FACT1         CONST FOR UPCONTRL                      805 FPSS
036575,000096: 
036576,000097:                                                                                                  #  FACT2         CONST FOR UPCONTRL                      1/805 FPSS
036577,000098: 
036578,000099:                                                                                                  #  FACTOR        USED IN UPCONTRL                        1                       * MAXIMUM VALUE DENOTES UNSCALED
036579,000100:                                                                                                  #                                                                
036580,000101:                                                                                                  #  GAMMAL        FLIGHT PATH ANGLE AT VL                 1 RADIAN                  VARIABLE VALUE WHEN SCALED
036581,000102: 
036582,000103:                                                                                                  #  GAMMAL1       SIMPLE FORM OF GAMMAL                   1 RADIAN                  VARIABLE HAS MAXIMUM VALUE OF ONE.
036583,000104: 

Page 839

036585,000106:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE           COMPUTER NAME
036586,000107:                                                                                                  #  --------      -----------                             ------- -----           -------- ----
036587,000108: 
036588,000109:                                                                                                  #  HEADSUP       INDICATOR FOR INITIAL ROLL              1
036589,000110: 
036590,000111:                                                                                                  #  KA            DRAG TO LIFT UP IF DOWN                 805 FPSS                = KAT
036591,000112: 
036592,000113:                                                                                                  #  KLAT          LATERAL SWITCH GAIN                     1                       (NOM = .0125)
036593,000114: 
036594,000115:                                                                                                  #  K2ROLL        INDICATOR FOR ROLL SWITCH               
036595,000116: 
036596,000117:                                                                                                  #  LAD           MAX L/D (MIN ACTUAL VEHICLE L/D)        1
036597,000118: 
036598,000119:                                                                                                  #  LADPAD        NOMINAL VEHICLE L/D, SP PAD LOAD        1                       (NOM = 0.3)
036599,000120: 
036600,000121:                                                                                                  #  LATANG        LATERAL RANGE                           4 RADIANS
036601,000122: 
036602,000123:                                                                                                  #  LEQ           EXCESS C.F. OVER GRAV=(VSQ-1)GS         128.8 FPSS
036603,000124: 
036604,000125:                                                                                                  #  LEWD          UPCONTROL REFERENCE L/D                 1
036605,000126: 
036606,000127:                                                                                                  #  LOD           FINAL PHASE L/D                         1                       (NOM = 0.18)
036607,000128: 
036608,000129:                                                                                                  #  LODPAD        FINAL PHASE L/D, SP PAD LOAD            1
036609,000130: 
036610,000131:                                                                                                  #  L/D           DESIRED LIFT TO DRAG RATIO              1
036611,000132:                                                                                                  #                (VERTICAL PLANE)
036612,000133:                                                                                                  #  
036613,000134:                                                                                                  #  L/D1          TEMP STORAGE FOR L/D IN LATERAL         1
036614,000135: 
036615,000136:                                                                                                  #  L/DCMINR      LAD COS(15DEG)                          1                       (NOM = 0.2895)
036616,000137: 
036617,000138:                                                                                                  #  PREDANGL      PREDICTED RANGE (FINAL PHASE)           2700 NM                 = PREDANG
036618,000139: 
036619,000140:                                                                                                  #  Q2            FINAL PHASE RANGE -23500 Q3             21600 NM
036620,000141:                                                                                                  #                Q2 = FCN(LAD)
036621,000142: 
036622,000143:                                                                                                  #  Q7            MINIMUM DRAG FOR UPCONTROL              805FPSS
036623,000144: 
036624,000145:                                                                                                  #  RDOT          ALTITUDE RATE                           2 VSAT
036625,000146: 
036626,000147:                                                                                                  #  RDOTREF       REFERENCE RDOT FOR UPCONTROL            2 VSAT
036627,000148: 
036628,000149:                                                                                                  #  RDTR          REFERENCE RDOT FOR DOWNCONT             2 VSAT                  NOT SAVED
036629,000150: 
036630,000151:                                                                                                  #  ROLLC         ROLL COMMAND                            1 REVOLUTION
036631,000152: 
036632,000153:                                                                                                  #  RTOGO         RANGE TO GO (FINAL PHASE)               2700 NM                 = FX +2
036633,000154: 
036634,000155:                                                                                                  #  SL            SINE OF LATITUDE                        1                       NOT SAVED
036635,000156: 
036636,000157:                                                                                                  #  T             TIME                                    B 28 CENTISEC           = TIME2,TIME1
036637,000158: 
036638,000159:                                                                                                  #  THETA         DESIRED RANGE (RADIANS)                 2 PI RADIANS            = THETAH
036639,000160: 
036640,000161:                                                                                                  #  THETNM        DESIRED RANGE (NM)                      21600 NM                NON EXISTENT
036641,000162: 
036642,000163:                                                                                                  #  V             VELOCITY MAGNITUDE                      2 VSAT
036643,000164:                                                                                                  #  
036644,000165:                                                                                                  #  V1            INITIAL VELOCITY FOR UPCONTROL          2 VSAT
036645,000166: 
036646,000167:                                                                                                  #  VL            EXIT VELOCITY FOR UPCONTROL             2 VSAT
036647,000168: 
036648,000169:                                                                                                  #  VREF          REFERENCE VELOCITY FOR UPCONTROL        2 VSAT
036649,000170: 
036650,000171:                                                                                                  #  VS1           VSAT OR V1, WHICHEVER IS SMALLER        2 VSAT
036651,000172:                                                                                                  #                  2     2
036652,000173:                                                                                                  #  VBARS         VL /VSAT                                4
036653,000174:                                                                                                  #                                           2     2
036654,000175:                                                                                                  #  VSQ           NORMALISED VEL. SQUARED = V /VSAT       4                       = VSQUARE
036655,000176: 
036656,000177:                                                                                                  #  WT            EARTH RATE TIMES TIME                   1 REVOLUTION            NOT SAVED
036657,000178:                                                                                                  #                                                                                = WIE (DTEAROT)
036658,000179:                                                                                                  #  X             INTERMEDIATE VARIABLE IN G-LIMITER      2 VSAT                  NOT SAVED
036659,000180: 
036660,000181:                                                                                                  #  Y             LATERAL MISS LIMIT                      4 RADIANS               NOT SAVED
036661,000182: 

Page 840

036663,000184:                                                                                                  #  EXTRA COMPUTER ERASABLE LOCATIONS NOT SHOWN ON FLOW CHARTS
036664,000185:                                                                                                  #  -----------------------------------------------------------
036665,000186: 
036666,000187:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE
036667,000188:                                                                                                  #  --------      -----------                             ------- -----
036668,000189: 
036669,000190:                                                                                                  #  GOTOADDR      ADDRESS SELECTED BY SEQUENCER
036670,000191: 
036671,000192:                                                                                                  #  XPIPBUF       BUFFER TO STORE X PIPA COUNTS
036672,000193: 
036673,000194:                                                                                                  #  YPIPBUF       BUFFER TO STORE Y PIPA COUNTS
036674,000195: 
036675,000196:                                                                                                  #  ZPIPBUF       BUFFER TO STORE Z PIPA COUNTS
036676,000197: 
036677,000198:                                                                                                  #  PIPCTR        COUNTS PASSES THRU PIPA READ ROUTINE
036678,000199: 
036679,000200:                                                                                                  #  JJ            INDEX IN FINAL PHASE TABLE LOOK-UP
036680,000201: 
036681,000202:                                                                                                  #  MM            INDEX IN FINAL PHASE TABLE LOOK-UP
036682,000203: 
036683,000204:                                                                                                  #  GRAD          INTERPOLATION FACTOR IN FINAL PHASE
036684,000205: 
036685,000206:                                                                                                  #  FX            DRANGE/D L/D = F3                       2700 NM
036686,000207: 
036687,000208:                                                                                                  #  FX +1         AREF                                    805 FPSS
036688,000209: 
036689,000210:                                                                                                  #  FX +2         RTOGO                                   2700 NM
036690,000211: 
036691,000212:                                                                                                  #  FX +3         RDOTREF                                 VSAT/4
036692,000213: 
036693,000214:                                                                                                  #  FX +4         DRANGE/D RDOT = F2                      21600/2VS NM/FPS
036694,000215: 
036695,000216:                                                                                                  #  FX +5         DRANGE/D DRAG = F1                      2700/805 NM/FPSS
036696,000217: 
036697,000218:                                                                                                  #  TEM1B         TEMPORARY LOCATION
036698,000219: 
036699,000220:                                                                                                  #  TIME/RTO      TIME OF INITIAL TARGET RTINIT           B 28 CENTISEC
036700,000221: 
036701,000222:                                                                                                  #  DTEAROT       EST TIME BETWEEN RTINIT AND RT          B 28 CENTISEC
036702,000223:                                                                                                  #  -
036703,000224:                                                                                                  #  UNITV         UNIT V VECTOR                           2
036704,000225:                                                                                                  #  -
036705,000226:                                                                                                  #  UNITR         UNIT R VECTOR                           2
036706,000227:                                                                                                  #   -
036707,000228:                                                                                                  #  -VREL         NEGATIVE VELOCITY REL TO ATMOSP         2 VSAT
036708,000229: 
036709,000230:                                                                                                  #  COMPUTER SWITCHES                                     INITIAL STATE           CM/FLAGS = STATE +6
036710,000231:                                                                                                  #  -------- --------                                     -------------           -------------------
036711,000232: 
036712,000233:                                                                                                  #  ENTRYDSP      DO ENTRY DISPLAY, IF SET                NON-BRANCH (1)          92D, BIT 13
036713,000234:                                                                                                  #  GONEPAST      INDICATES OVERSHOOT OF TARGET           NON-BRANCH (0)          95D, BIT 10
036714,000235:                                                                                                  #  RELVELSW      RELATIVE VELOCITY SWITCH                NON-BRANCH (0)          96D, BIT 9
036715,000236:                                                                                                  #  EGSW          FINAL PHASE SWITCH                      NON-BRANCH (0)          97D, BIT 8
036716,000237:                                                                                                  #  FIRSTPAS      INITIAL PASS THRU HUNTEST               NON-BRANCH (0)          98D, BIT 7
036717,000238:                                                                                                  #  HIND          INDICATES ITERATION IN HUNTEST          NON-BRANCH (0)          99D, BIT 6
036718,000239:                                                                                                  #  INRLSW        INDICATES INIT ROLL ATTITUDE SET        NON-BRANCH (0)          100D, BIT 5
036719,000240:                                                                                                  #  LATSW         INHIBIT DOWNLIFT SWITCH IF NOT SET          BRANCH (1)          101D, BIT 4
036720,000241:                                                                                                  #  .05GSW        INDICATES DRAG EXCEEDS .05 GS               BRANCH (0)          102D, BIT 3
036721,000242: 
036722,000243:                                                                                                  #  GONEBY        INDICATES GONE PAST TARGET (SET)        SELF-INITIALZNG 112D, BIT 8
036723,000244: 

Page 841

036725,000246:                                                                                                  #  CONSTANTS AND GAINS                                                   VALUE
036726,000247:                                                                                                  #  -------------------                                                   -----
036727,000248: 
036728,000249:                                                                                                  #  C1            FACTOR IN ALP COMPUTATION                               1.25
036729,000250:                                                                                                  #  C16           CONSTD GAIN ON DRAG                                     .01
036730,000251:                                                                                                  #  C17           CONSTD GAIN ON RDOT                                     .001
036731,000252:                                                                                                  #  C18           BIAS VEL. FOR FINAL PHASE START                         500     FPS
036732,000253:                                                                                                  #  C20           MAX DRAG FOR DOWN-LIFT                                  175     FPSS
036733,000254:                                                                                                  #  CHOOK         FACTOR IN AHOOK COMPUTATION                             .25
036734,000255:                                                                                                  #  CH1           FACTOR IN GAMMAL COMPUTATION                            1.0
036735,000256:                                                                                                  #  COS15         COS( 15 DEG )                                           .965
036736,000257:                                                                                                  #  DLEWD0        INITIAL VARIATION IN LEWD                               -.05
036737,000258:                                                                                                  #  D2            DRAG TO CHANGE LEWD                                     175     FPSS
036738,000259:                                                                                                  #  DT            COMPUTATION CYCLE TIME INTERVAL                         2       SEC.
036739,000260:                                                                                                  #  GMAX          MAXIMUM ACCELERATION                                    257.6   FPSS    (8 G-S)
036740,000261:                                                                                                  #  KA1           FACTOR IN KA CALC                                       1.3     GS
036741,000262:                                                                                                  #  KA2           FACTOR IN KA CALC                                       .2      GS
036742,000263:                                                                                                  #  KA3           FACTOR IN D0 CALC                                       90 FPSS
036743,000264:                                                                                                  #  KA4           FACTOR IN D0 CALC                                       40 FPSS
036744,000265:                                                                                                  #  KB1           OPTIMIZED UPCONTROL GAIN                                3.4
036745,000266:                                                                                                  #  KB2           OPTIMIZED UPCONTROL GAIN                                .0034
036746,000267:                                                                                                  #  KDMIN         INCREMENT ON Q7 TO DETECT END OF KEPLER PHASE           .5      FPSS
036747,000268:                                                                                                  #  KTETA         TIME OF FLIGHT CONSTANT                                 1000
036748,000269:                                                                                                  #  KLAT1         FACTOR IN KLAT CALC                                     1/24
036749,000270:                                                                                                  #  K44           GAIN USED IN INITIAL ROLL SECTION                       19749550 FPS
036750,000271:                                                                                                  #  LATBIAS       LATERAL SWITCH BIAS TERM                                .41252961 NM
036751,000272:                                                                                                  #  LEWD1         NOMINAL UPCONTROL L/D                                   .15
036752,000273:                                                                                                  #  POINT1        FACTOR TO REDUCE UPCONTROL GAIN                         .1
036753,000274:                                                                                                  #  Q2            FINAL PHASE RANGE - 23500 Q3                            -1002   NM
036754,000275:                                                                                                  #  Q3            FINAL PHASE DRANGE/D V                                  .07     NM/FPS
036755,000276:                                                                                                  #  Q5            FINAL PHASE DRANGE/D GAMMA                              7050    NM/RAD
036756,000277:                                                                                                  #  Q6            FINAL PHASE INITIAL FLIGHT PATH ANGLE                   .0349   RAD
036757,000278:                                                                                                  #  Q7F           MIN DRAG FOR UPCONTROL                                  6       FPSS
036758,000279:                                                                                                  #  Q7MIN         MIN VALUE FOR Q7 IN FACTOR CALCULATION                  40      FPSS
036759,000280:                                                                                                  #  Q19           FACTOR IN GAMMAL1 CALCULATION                           .5
036760,000281:                                                                                                  #  Q21           FACTOR IN Q2 CALCULATION.                               1000    NM
036761,000282:                                                                                                  #  Q22           FACTOR IN Q2 CALCULATION.                               -1302   NM
036762,000283:                                                                                                  #  VFINAL1       VELOCITY TO START FINAL PHASE ON INITIAL ENTRY          27000   FPS
036763,000284:                                                                                                  #  VFINAL        FACTOR IN INITIAL UP-DOWN CALC                          26600   FPS
036764,000285:                                                                                                  #  VLMIN         MINIMUM VL                                              18000   FPS
036765,000286:                                                                                                  #  VMIN          VELOCITY TO SWITCH TO RELATIVE VEL                      VSAT/2
036766,000287:                                                                                                  #  VRCONTRL      RDOT TO START INTO HUNTEST                              700     FPS
036767,000288:                                                                                                  #                VRCONT=COMPUTER NAME
036768,000289:                                                                                                  #  25NM          TOLERANCE TO STOP RANGE ITERATION                       25      NM
036769,000290:                                                                                                  #  VQUIT         VELOCITY TO STOP STEERING                               1000    FPS
036770,000291: 

Page 842

036772,000293:                                                                                                  #  CONVERSION FACTORS AND SCALING CONSTANTS
036773,000294:                                                                                                  #  ---------- ------- --- ------- ---------
036774,000295: 
036775,000296:                                                                                                  #  ATK   ANGLE IN RAD TO NM                                              3437.7468       NM/RAD
036776,000297:                                                                                                  #  GS    NOMINAL G VALUE FOR SCALING                                     32.2            FPSS
036777,000298:                                                                                                  #  HS    ATMOSPHERE SCALE HEIGHT                                         28500           FT
036778,000299:                                                                                                  #  J     GRAVITY HARMONIC COEFFICIENT                                    .00162346       
036779,000300:                                                                                                  #  KWE   EQUATORIAL EARTH RATE                                           1546.70168      FPS
036780,000301:                                                                                                  #  MUE   EARTH GRAVITATIONAL CONSTANT                                    3.986032233 E14 CUBIC M/ SEC SEC
036781,000302:                                                                                                  #  RE    EARTH RADIUS                                                    21202900        FT
036782,000303:                                                                                                  #  REQ   EARTH EQUATORIAL RADIUS                                         20925738.2      FT
036783,000304:                                                                                                  #  VSAT  SATELLITE VELOCITY AT RE                                        25766.1973      FPS
036784,000305:                                                                                                  #  WIE   EARTH RATE                                                      .0000729211505  RAD/SEC
036785,000306: 
036786,000307:                                                                                                  #                (END GSOP AS-278, VOL 1, FIG. 5.6-3 CONSTANTS, GAINS, ETC.)
036787,000308: 
036788,000309:                                                                                                  #  DISPLAY QUANTITIES
036789,000310:                                                                                                  #  ------------------
036790,000311: 
036791,000312:                                                                                                  #  (SEE SECTION 4 OF THE GSOP FOR SIGN CONVENTIONS.)
036792,000313: 
036793,000314:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE
036794,000315:                                                                                                  #  --------      -----------                             ------- -----
036795,000316: 
036796,000317:                                                                                                  #  QMAX          PREDICTED MAXIMUM ENTRY ACCEL           163.84 GS       N 60
036797,000318:                                                                                                  #  VPRED         PREDICTED VELOCITY AT ALTITUDE          128 M/CENTISEC  N 60
036798,000319:                                                                                                  #                400K FT ABOVE FISCHER RADIUS.
036799,000320:                                                                                                  #  GAMMAEI       PREDICTED GAMMA AT ALTITUDE             1 REVOLUTION    N 60
036800,000321:                                                                                                  #                400K FT ABOVE FISCHER RADIUS.
036801,000322:                                                                                                  #  D             DRAG ACCELERATION                       805 FPSS        N 64
036802,000323:                                                                                                  #  VMAGI         INERTIAL VELOCITY MAGNITUDE             128 M/CENTISEC  N 64, N 68
036803,000324:                                                                                                  #  THETAH        DESIRED RANGE ANGLE NM                  1 REVOLUTION    N 64, N 67
036804,000325:                                                                                                  #  LAT           PRESENT LATITUDE                        1 REVOLUTION    N 67
036805,000326:                                                                                                  #  LONG          PRESENT LONGITUDE                       1 REVOLUTION    N 67
036806,000327:                                                                                                  #  RTOGO         RANGE ANGLE TO SPLASH FROM              1 REVOLUTION    N 63
036807,000328:                                                                                                  #                EMSALT FT ABOVE FISCHER RADIUS. (IN NM) 
036808,000329:                                                                                                  #  VIO           PREDICTED VELOCITY AT ALTITUDE          128 M/CENTISEC  N 63
036809,000330:                                                                                                  #                EMSALT FT ABOVE FISCHER RADIUS.
036810,000331:                                                                                                  #  TTE           TIME OF FREE FALL TO ALT                B 28 CENTISEC   N 63
036811,000332:                                                                                                  #                EMSALT FT ABOVE FISCHER RADIUS.
036812,000333:                                                                                                  #  ROLLC         ROLL COMMAND                            1 REVOLUTION    N 66, N 68, N 69
036813,000334:                                                                                                  #  LATANG        CROSS-RANGE ERROR (XRNGERR)             4 RADIANS       N 66
036814,000335:                                                                                                  #  DNRNGERR      DOWN RANGE ERROR                        1 REVOLUTION    N 66
036815,000336:                                                                                                  #                (PREDANG - THETAH IN NM)
036816,000337:                                                                                                  #  HDOT          ALTITUDE RATE                           128 M/CENTISEC  N 68
036817,000338:                                                                                                  #  Q7            MINIMUM DRAG FOR UPCONTROL              805 FPSS        N 69
036818,000339:                                                                                                  #  VL            EXIT VELOCITY FOR UP-CONTROL            2 VSAT          N 69
036819,000340: 

Page 843

036821,000342:                                                                                                  #  BODY ATTITUDE QUANTITIES  (CM/POSE)
036822,000343:                                                                                                  #  -----------------------------------
036823,000344: 
036824,000345:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE
036825,000346:                                                                                                  #  --------      -----------                             ------- -----
036826,000347:                                                                                                  #   -
036827,000348:                                                                                                  #  -VREL         NEGATIVE VELOCITY REL TO ATMOS.         2 VSAT
036828,000349:                                                                                                  #  -
036829,000350:                                                                                                  #  OLDUYA        USED FOR UYA BELOW 1000 FPS             2
036830,000351:                                                                                                  #  -
036831,000352:                                                                                                  #  UXA/2         UNIT VECTOR TRIAD                       2
036832,000353:                                                                                                  #  -
036833,000354:                                                                                                  #  UYA/2                 BASED ON                        2
036834,000355:                                                                                                  #  -
036835,000356:                                                                                                  #  UZA/2                         THE TRAJECTORY.         2
036836,000357:                                                                                                  #  -
036837,000358:                                                                                                  #  UBX/2         UNIT VECTOR                             2
036838,000359:                                                                                                  #  -
036839,000360:                                                                                                  #  UBY/2                 BODY TRIAD                      2
036840,000361:                                                                                                  #  -
036841,000362:                                                                                                  #  UBZ/2                         FOR CM.                 2
036842,000363: 

End of include-file ENTRY_LEXICON.agc.  Parent file is MAIN.agc