Source Code

These source-code files were obtained by digitally photographing an Artemis 72 (Apollo 15-17 Command Module) program listing from a private collection and then modifying pre-existing Comanche 55 (Apollo 11) source files to incorporate changes. Photography was by Ron Burkey, and transcription was performed by a team of volunteers. Note that the page images presented online are of reduced quality, and that additional images may be available. Report any conversion errors or legibility problems in page images to info@sandroid.org. Notations on the program listing read, in part:

	GAP: ASSEMBLE REVISION 072 OF AGC PROGRAM ARTEMIS 
	BY NASA 2021114-011 11:40 FEB. 26, 1971
Note that the date is the date of the printout, not the date of the program revision.

037274,000002:                                                                                                  ## Copyright:   Public domain.
037275,000003:                                                                                                  ## Filename:    ENTRY_LEXICON.agc
037276,000004:                                                                                                  ## Purpose:     Part of the source code for Artemis (i.e., Colossus 3),
037277,000005:                                                                                                  ##              build 072.  This is for the Command Module's (CM)
037278,000006:                                                                                                  ##              Apollo Guidance Computer (AGC), for
037279,000007:                                                                                                  ##              Apollo 15-17.
037280,000008:                                                                                                  ## Assembler:   yaYUL
037281,000009:                                                                                                  ## Contact:     Jim Lawton <jim DOT lawton AT gmail DOT com>
037282,000010:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
037283,000011:                                                                                                  ## Page Scans:  www.ibiblio.org/apollo/ScansForConversion/Artemis072/
037284,000012:                                                                                                  ## Mod history: 2009-08-11 JL   Adapted from corresponding Comanche 055 file.
037285,000013:                                                                                                  ##              2010-02-20 RSB  Un-##'d this header.
037286,000014:                                                                                                  ##              2017-01-22 RSB  Proofed comment text by diff'ing vs Comanche 55
037287,000015:                                                                                                  ##                              and corrected errors found.
037288,000016: 

Page 842

037290,000018: 
037291,000019:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE *         COMPUTER NAME
037292,000020:                                                                                                  #  --------      -----------                             ------- -----           -------- ----
037293,000021:                                                                                                  #  -
037294,000022:                                                                                                  #  URT0          INITIAL TARGET VECTOR                   2 (UNIT VECTOR)         = RTINIT
037295,000023:                                                                                                  #  -
037296,000024:                                                                                                  #  UZ            UNIT VECTOR NORTH                       1                       = UNITW
037297,000025:                                                                                                  #  -
037298,000026:                                                                                                  #  V             VELOCITY VECTOR                         2 VSAT                  = VEL
037299,000027:                                                                                                  #  -
037300,000028:                                                                                                  #  R             POSITION VECTOR                         2 EXP 29 METERS         = RN
037301,000029:                                                                                                  #  -
037302,000030:                                                                                                  #  VI            INERTIAL VELOCITY                       128 M/CENTISEC          = VN
037303,000031:                                                                                                  #  -
037304,000032:                                                                                                  #  RTE           VECTOR EAST AT INITIAL TARGET           2                       = RTEAST
037305,000033:                                                                                                  #  -
037306,000034:                                                                                                  #  UTR           NORMAL TO RTE AND UZ                    2                       = RTNORM
037307,000035:                                                                                                  #  -
037308,000036:                                                                                                  #  URT           TARGET VECTOR                           2                       = RT
037309,000037:                                                                                                  #  -
037310,000038:                                                                                                  #  UNI           UNIT NORMAL TO TRAJECTORY PLANE         2       
037311,000039:                                                                                                  #  -
037312,000040:                                                                                                  #  DELV          INTEGRATED ACCEL. FROM PIPAS            5.85 16384 CM/S
037313,000041:                                                                                                  #  -
037314,000042:                                                                                                  #  G             GRAVITY VECTOR                          128 M/CENTISEC          = GDT/2
037315,000043: 
037316,000044:                                                                                                  #  A0            INITIAL DRAG FOR UPCONTRL               805 FPSS                FPSS=FT/SEC/SEC
037317,000045:                                                                                                  #  AHOOKDV       TERM IN GAMMAL CALC. = AHOOK DVL        8
037318,000046:                                                                                                  #  A1            DRAG VALUE IN FACTOR CALCULATION        805 FPSS
037319,000047:                                                                                                  #  ALP           CONST FOR UPCONTRL                      1
037320,000048:                                                                                                  #  ASKEP         KEPLER RANGE                            21600 NM                NM = NAUTICAL MILE
037321,000049:                                                                                                  #  ASP1          FINAL PHASE RANGE                       21600 NM
037322,000050:                                                                                                  #  ASPUP         UP-RANGE                                21600 NM
037323,000051:                                                                                                  #  ASP3          GAMMA CORRECTION                        21600 NM
037324,000052:                                                                                                  #  ASPDWN        RANGE DOWN TO PULL-UP                   21600 NM
037325,000053:                                                                                                  #  ASP           PREDICTED RANGE                         21600 NM                  NOT STORED
037326,000054:                                                                                                  #  COSG          COSINE(GAMMAL)                          2                       = COSG/2
037327,000055:                                                                                                  #  C/D0          RECIPROCAL DRAG, -4/D0 B-8              64/FPSS                 AGC ONLY
037328,000056:                                                                                                  #  D             TOTAL ACCELERATION                      805 FPSS
037329,000057:                                                                                                  #  D0            CONTROLLED CONSTANT D                   805 FPSS
037330,000058:                                                                                                  #  DHOOK         TERM IN GAMMAL COMPUTATION              805 FPSS
037331,000059:                                                                                                  #  DIFF          THETNM-ASP (RANGE DIFFERENCE)           21600 NM
037332,000060:                                                                                                  #  DIFFOLD       PREVIOUS VALUE OF DIFF                  21600 NM
037333,000061:                                                                                                  #  DLEWD         CHANGE IN LEWD                          1
037334,000062:                                                                                                  #  DR            REFERENCE DRAG FOR DOWNCONTROL          805 FPSS                  NOT STORED
037335,000063:                                                                                                  #  DREFR( )      REFERENCE DRAG (FINAL PHASE TABLE)      805 FPSS                  NOT SAVED
037336,000064:                                                                                                  #  DVL           VS1-VL                                  2 VSAT
037337,000065:                                                                                                  #  E             ECCENTRICITY                            4                         NOT STORED
037338,000066:                                                                                                  #  F1( )         DRANGE/D DRAG (FINAL PHASE TABLE)       2700/805                = FX +5
037339,000067:                                                                                                  #  F2( )         DRANGE/D RDOT (FINAL PHASE TABLE)       2700/2VS NM/FPS         = FX +4 /8

Page 843

037341,000069:                                                                                                  #  F3( )         DRANGE/D (L/D) (FINAL PHASE TABLE)      2700 NM                 = FX
037342,000070:                                                                                                  #                                                                        * MAXIMUM VALUE DENOTES UNSCALED
037343,000071:                                                                                                  #                                                                          VARIABLE VALUE WHEN SCALED
037344,000072:                                                                                                  #  FIGURE 7.0-2          COMPUTER VARIABLES                                VARIABLE HAS MAXIMUM VALUE OF ONE.
037345,000073: 

Page 844

037347,000075: 
037348,000076:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE           COMPUTER NAME
037349,000077:                                                                                                  #  --------      -----------                             ------- -----           -------- ----
037350,000078: 
037351,000079:                                                                                                  #  FACT1         CONST FOR UPCONTRL                      2 VSAT
037352,000080:                                                                                                  #  FACT2         CONST FOR UPCONTRL                      1/805 FPSS
037353,000081:                                                                                                  #  FACTOR        USED IN UPCONTRL                        1
037354,000082:                                                                                                  #  GAMMAL        FLIGHT PATH ANGLE AT VL                 1 RADIAN
037355,000083:                                                                                                  #  GAMMAL1       SIMPLE FORM OF GAMMAL                   1 RADIAN
037356,000084:                                                                                                  #  HEADSUP       INDICATOR FOR INITIAL ROLL              1
037357,000085:                                                                                                  #  KA            DRAG TO LIFT UP IF DOWN                 805 FPSS                = KAT
037358,000086:                                                                                                  #  KLAT          LATERAL SWITCH GAIN                     1               (NOM = .0125)
037359,000087:                                                                                                  #  K2ROLL        INDICATOR FOR ROLL SWITCH               
037360,000088:                                                                                                  #  LAD           MAX L/D (MIN ACTUAL VEHICLE L/D)        1
037361,000089:                                                                                                  #  LADPAD        NOMINAL VEHICLE L/D, SP PAD LOAD        1               (NOM = 0.3)
037362,000090:                                                                                                  #  LATANG        LATERAL RANGE                           4 RADIANS
037363,000091:                                                                                                  #  LAT(SPL)      GEODETIC LATITUDE OF TARGET             1 REVOLUTION
037364,000092:                                                                                                  #  LNG(SPL)      LONGITUDE OF TARGET                     1 REVOLUTION
037365,000093:                                                                                                  #  LEQ           EXCESS C.F. OVER GRAV=(VSQ-1)GS         128.8 FPSS
037366,000094:                                                                                                  #  LEWD          UPCONTROL REFERENCE L/D                 1
037367,000095:                                                                                                  #  LOD           FINAL PHASE L/D                         1               (NOM = 0.18)
037368,000096:                                                                                                  #  LODPAD        FINAL PHASE L/D, SP PAD LOAD            1
037369,000097:                                                                                                  #  L/D           DESIRED LIFT TO DRAG RATIO              1
037370,000098:                                                                                                  #                (VERTICAL PLANE)
037371,000099:                                                                                                  #  L/D1          TEMP STORAGE FOR L/D IN LATERAL         1
037372,000100:                                                                                                  #  L/DCMINR      LAD COS(15DEG)                          1               (NOM = 0.2895)
037373,000101:                                                                                                  #  PREDANGL      PREDICTED RANGE  (FINAL PHASE)          2700 NM                 = PREDANG
037374,000102:                                                                                                  #  Q2            FINAL PHASE RANGE                       21600  NM
037375,000103:                                                                                                  #  Q7            MINIMUM DRAG FOR UPCONTROL              805FPSS
037376,000104:                                                                                                  #  RDOT          ALTITUDE RATE                           2 VSAT
037377,000105:                                                                                                  #  RDOTREF       REFERENCE RDOT FOR UPCONTROL            2 VSAT
037378,000106:                                                                                                  #  RDOTREF( )    REFERENCE RDOT (FINAL PHASE TABLE)      2 VSAT                  = FX +3 /8
037379,000107:                                                                                                  #  RDTR          REFERENCE RDOT FOR DOWNCONT             2 VSAT                    NOT SAVED
037380,000108:                                                                                                  #  ROLLC         ROLL COMMAND                            1 REVOLUTION
037381,000109:                                                                                                  #  RTOGO( )      RANGE TO GO (FINAL PHASE TABLE)         2700 NM                 = FX +2
037382,000110:                                                                                                  #  SL            SINE OF LATITUDE                        1                         NOT SAVED
037383,000111:                                                                                                  #  T             TIME                                    B 28 CENTISEC           = PIPTIME-TIME/RTO
037384,000112:                                                                                                  #  THETA         DESIRED RANGE (RADIANS)                 2 PI RADIANS            = THETAH
037385,000113:                                                                                                  #  THETNM        DESIRED RANGE (NM)                      21600 NM                  NON EXISTENT
037386,000114:                                                                                                  #  V             VELOCITY MAGNITUDE                      2 VSAT
037387,000115:                                                                                                  #  V1            INITIAL VELOCITY FOR UPCONTROL          2 VSAT
037388,000116:                                                                                                  #  VL            EXIT VELOCITY FOR UPCONTROL             2 VSAT
037389,000117:                                                                                                  #  VMAGI         INERTIAL VELOCITY MAGNITUDE,|VI|        128 M/CENTISEC
037390,000118:                                                                                                  #  VREF          REFERENCE VELOCITY FOR UPCONTROL        2 VSAT
037391,000119:                                                                                                  #  VREF( )       REFERENCE V     (FINAL PHASE TABLE)     2 VSAT                    NOT STORED
037392,000120:                                                                                                  #  VS1           VSAT OR V1, WHICHEVER IS SMALLER        2 VSAT
037393,000121:                                                                                                  #                  2     2
037394,000122:                                                                                                  #  VBARS         VL /VSAT                                4
037395,000123:                                                                                                  #                                           2     2
037396,000124:                                                                                                  #  VSQ           NORMALISED VEL. SQUARED = V /VSAT       4                       = VSQUARE
037397,000125: 
037398,000126:                                                                                                  #  WT            EARTH RATE TIMES TIME                   1 REVOLUTION              NOT SAVED

Page 845

037400,000128:                                                                                                  #                                                                                = WIE (DTEAROT)
037401,000129:                                                                                                  #  X             INTERMEDIATE VARIABLE IN G-LIMITER      2 VSAT                    NOT SAVED
037402,000130:                                                                                                  #  Y             LATERAL MISS LIMIT                      4 RADIANS                 NOT SAVED
037403,000131: 
037404,000132:                                                                                                  #  FIGURE 7.0-2A         COMPUTER VARIABLES (CONTINUED)
037405,000133: 

Page 846

037407,000135:                                                                                                  #  EXTRA COMPUTER ERASABLE LOCATIONS NOT SHOWN ON FLOW CHARTS
037408,000136:                                                                                                  #  -----------------------------------------------------------
037409,000137: 
037410,000138:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE
037411,000139:                                                                                                  #  --------      -----------                             ------- -----
037412,000140: 
037413,000141:                                                                                                  #  GOTOADDR      ADDRESS SELECTED BY SEQUENCER
037414,000142:                                                                                                  #  XPIPBUF       BUFFER TO STORE X PIPA COUNTS
037415,000143:                                                                                                  #  YPIPBUF       BUFFER TO STORE Y PIPA COUNTS
037416,000144:                                                                                                  #  ZPIPBUF       BUFFER TO STORE Z PIPA COUNTS
037417,000145:                                                                                                  #  PIPCTR        COUNTS PASSES THRU PIPA READ ROUTINE
037418,000146:                                                                                                  #  JJ            INDEX IN FINAL PHASE TABLE LOOK-UP
037419,000147:                                                                                                  #  MM            INDEX IN FINAL PHASE TABLE LOOK-UP
037420,000148:                                                                                                  #  GRAD          INTERPOLATION FACTOR IN FINAL PHASE
037421,000149:                                                                                                  #  FX            DRANGE/D L/D = F3                       2700 NM
037422,000150:                                                                                                  #  FX + 1        AREF                                    805 FPSS
037423,000151:                                                                                                  #  FX + 2        RTOGO                                   2700 NM
037424,000152:                                                                                                  #  FX + 3        RDOTREF                                 VSAT/4
037425,000153:                                                                                                  #  FX + 4        DRANGE/D RDOT = F2                      21600/2VS NM/FPS
037426,000154:                                                                                                  #  FX + 5        DRANGE/D DRAG = F1                      2700/805 NM/FPSS
037427,000155:                                                                                                  #  TEM1B         TEMPORARY LOCATION
037428,000156:                                                                                                  #  TIME/RTO      TIME OF INITIAL TARGET RTINIT           B 28 CENTISEC
037429,000157:                                                                                                  #  DTEAROT       EST TIME BETWEEN RTINIT AND RT          B 28 CENTISEC
037430,000158:                                                                                                  #  -
037431,000159:                                                                                                  #  UNITV         UNIT V VECTOR                           2
037432,000160:                                                                                                  #  -
037433,000161:                                                                                                  #  UNITR         UNIT R VECTOR                           2
037434,000162:                                                                                                  #   -
037435,000163:                                                                                                  #  -VREL         NEGATIVE VELOCITY REL TO ATMOSP         2 VSAT
037436,000164: 
037437,000165:                                                                                                  #  COMPUTER SWITCHES                                     INITIAL STATE           CM/FLAGS = STATE +6
037438,000166:                                                                                                  #  -------- --------                                     -------------           -------------------
037439,000167: 
037440,000168:                                                                                                  #  ENTRYDSP      DO ENTRY DISPLAY, IF SET                NON-BRANCH (1)          92D, BIT13
037441,000169:                                                                                                  #  GONEPAST      INDICATES OVERSHOOT OF TARGET               BRANCH (1)          95D, BIT10
037442,000170:                                                                                                  #  RELVELSW      RELATIVE VELOCITY SWITCH                NON-BRANCH (0)          96D, BIT 9
037443,000171:                                                                                                  #  EGSW          FINAL PHASE SWITCH                      NON-BRANCH (0)          97D, BIT 8
037444,000172:                                                                                                  #  NOSWITCH      INHIBIT LATERAL SWITCH                  NON-BRANCH (0)          98D, BIT 7
037445,000173:                                                                                                  #  HIND          INDICATES ITERATION IN HUNTEST          NON-BRANCH (0)          99D, BIT 6
037446,000174:                                                                                                  #  INRLSW        INDICATES INIT ROLL ATTITUDE SET        NON-BRANCH (0)         100D, BIT 5
037447,000175:                                                                                                  #  LATSW         INHIBIT DOWNLIFT SWITCH IF NOT SET          BRANCH (1)         101D, BIT 4
037448,000176:                                                                                                  #  .05GSW        INDICATES DRAG EXCEEDS .05 GS           NON-BRANCH (0)         102D, BIT 3
037449,000177: 
037450,000178:                                                                                                  #  GONEBY        INDICATES GONE PAST TARGET (SET)        SELF-INITIALIZING      112D, BIT 8 IN STATE +7
037451,000179: 
037452,000180:                                                                                                  #  FIGURE 7.0-2B         COMPUTER VARIABLES (CONTINUED)
037453,000181: 

Page 847

037455,000183:                                                                                                  #  BODY ATTITUDE QUANTITIES  (CM/POSE)
037456,000184:                                                                                                  #  -----------------------------------
037457,000185: 
037458,000186:                                                                                                  #  VARIABLE      DECRIPTION                              MAXIMUM VALUE
037459,000187:                                                                                                  #  --------      ----------                              ------- -----
037460,000188:                                                                                                  #   -
037461,000189:                                                                                                  #  -VREL         NEGATIVE VELOCITY REL TO ATMOS.         2 VSAT
037462,000190:                                                                                                  #  -                      -
037463,000191:                                                                                                  #  OLDUYA        USED FOR UYA BELOW 1000 FPS             2
037464,000192: 
037465,000193:                                                                                                  #  -
037466,000194:                                                                                                  #  UXA/2         UNIT VECTOR TRIAD                       2
037467,000195:                                                                                                  #  -
037468,000196:                                                                                                  #  UYA/2                 BASED ON                        2
037469,000197:                                                                                                  #  -
037470,000198:                                                                                                  #  UZA/2                         THE TRAJECTORY.         2
037471,000199: 
037472,000200:                                                                                                  #  -
037473,000201:                                                                                                  #  UBX/2         UNIT VECTOR                             2
037474,000202:                                                                                                  #  -
037475,000203:                                                                                                  #  UBY/2                 BODY TRIAD                      2
037476,000204:                                                                                                  #  -
037477,000205:                                                                                                  #  UBZ/2                         FOR CM.                 2
037478,000206: 
037479,000207:                                                                                                  #  FIGURE 7.0-2C         COMPUTER VARIABLES (CONTINUED)
037480,000208: 

Page 848

037482,000210:                                                                                                  #  DISPLAY QUANTITIES            (FOR USAGE,SEE SECTION 4: P 61 THROUGH P 67)
037483,000211:                                                                                                  #  ------------------
037484,000212: 
037485,000213:                                                                                                  #   THIS TABLE PROVIDES THE READER WITH DISPLAY QUANTITY INFORMATION. THE VARIABLE NAMES REFLECT
037486,000214:                                                                                                  #  SECTION 5 USAGE.  EXCEPTING IMBEDDED BLANKS, THE SECTION 4 NAMES ARE PARENTHESIZED,IF DIFFERENT.
037487,000215:                                                                                                  #  SIGN CONVENTIONS ARE FOUND IN SECTION 4. IF THE DISPLAY VARIABLE NAME DIFFERS FROM SECTION 5 USAGE,
037488,000216:                                                                                                  #  SAY BECAUSE OF SCALE FACTOR, THE ALTERNATE SECTION 5 NAME IS ENCLOSED IN ANGULAR BRACKETS: < >.
037489,000217:                                                                                                  #  DISPLAY QUANTITY INFORMATION APPEARING ELSEWHERE IN SECTION 5 OTHER THAN IN 5 7 MAY BE FOUND THUS:
037490,000218:                                                                                                  #                   N 60 & N 63  (ALL)       FIGURE 6.10-4  IN 5.6.10.3
037491,000219:                                                                                                  #                   N 22 (ALL)               FIGURE 6.10-11 IN 5.6.10.6
037492,000220:                                                                                                  #                   N67 (LAT, LONG)          FIGURE 5.3-1   IN 5.5.3
037493,000221: 
037494,000222:                                                                                                  #  VARIABLE      DESCRIPTION                             MAXIMUM VALUE   DISPLAY NOUNS
037495,000223:                                                                                                  #  --------      -----------                             ------- -----   ------- -----
037496,000224: 
037497,000225:                                                                                                  #  GMAX          PREDICTED MAXIMUM ENTRY ACCEL           163.84 GS       N 60
037498,000226:                                                                                                  #  VPRED         PREDICTED VELOCITY AT ALTITUDE          128 M/CENTISEC  N 60
037499,000227:                                                                                                  #                400K FT ABOVE FISCHER RADIUS.
037500,000228:                                                                                                  #  GAMMAEI       PREDICTED GAMMA AT ALTITUDE             1 REVOLUTION    N 60
037501,000229:                                                                                                  #                400K FT ABOVE FISCHER RADIUS.
037502,000230:                                                                                                  #  RTGO          RANGE ANGLE TO SPLASH (RTOGO)           1 REVOLUTION    N 63
037503,000231:                                                                                                  #                FROM EMSALT FT ABOVE FISCHER
037504,000232:                                                                                                  #                RADIUS. (IN NM)
037505,000233:                                                                                                  #  VIO           PREDICTED VELOCITY AT ALTITUDE          128 M/CENTISEC  N 63
037506,000234:                                                                                                  #                EMSALT FT ABOVE FISCHER RADIUS.
037507,000235:                                                                                                  #  TTE           TIME OF FREE FALL (TFE)  TO             B 28 CENTISEC   N 63
037508,000236:                                                                                                  #                ALTITUDE EMSALT FT ABOVE FISCHER 
037509,000237:                                                                                                  #                RADIUS.
037510,000238:                                                                                                  #  OGA           OUTER GIMBAL ANGLE  (OG ROLL)           1 REVOLUTION    N 22
037511,000239:                                                                                                  #  IGA           INNER GIMBAL ANGLE  (IG PITCH)          1 REVOLUTION    N 22
037512,000240:                                                                                                  #  MGA           MIDDLE GIMBAL ANGLE (MG YAW)            1 REVOLUTION    N 22
037513,000241:                                                                                                  #                ALL ABOVE ANGLES FOR HYPERSONIC TRIM
037514,000242:                                                                                                  #  D             DRAG ACCELERATION  (G)                  805 FPSS                N 64,                   N 74
037515,000243:                                                                                                  #  VMAGI         INERTIAL VELOCITY MAGNITUDE (VI)        128 M/CENTISEC          N 64,   N 68,           N 74
037516,000244:                                                                                                  #  ROLLC         ROLL COMMAND  (BETA)                    1 REVOLUTION    N 66,           N 68,   N 69,   N 74
037517,000245:                                                                                                  #  XRNGERR       CROSS-RANGE ERROR <LATANG IN NM>        1 REVOLUTION    N 66
037518,000246:                                                                                                  #  DNRNGERR      DOWN RANGE ERROR **                     1 REVOLUTION    N 66
037519,000247:                                                                                                  #                <PREDANG - THETAH   IN NM>
037520,000248:                                                                                                  #                ** <DNRNGERR DISPLAYS 9999.9  IF GONEPAST =1  IN P 67>
037521,000249:                                                                                                  #  HDOT          ALTITUDE RATE  <RDOT>                   128 M/CENTISEC                  N 68
037522,000250:                                                                                                  #  Q7            EXIT DRAG LEVEL  (DL)                   805 FPSS                                N 69
037523,000251:                                                                                                  #  VL            EXIT VELOCITY FOR UP-CONTROL            2 VSAT                                  N 69
037524,000252:                                                                                                  #  RTOGO         DESIRED RANGE ANGLE <THETAH>            1 REVOLUTION    N 67,   N 64
037525,000253:                                                                                                  #                <-THETAH IF GONEBY =0,  THETAH IF GONEBY =1>
037526,000254:                                                                                                  #  LAT           GEODETIC LATITUDE OF VEHICLE            1 REVOLUTION    N 67
037527,000255:                                                                                                  #  LONG          LONGITUDE OF VEHICLE                    1 REVOLUTION    N 67
037528,000256: 
037529,000257:                                                                                                  #  THE FOLLOWING IS A DATA INPUT NOUN (REFER TO SECTION 4,P 61 & P 62)
037530,000258:                                                                                                  #  HEADSUP       INDICATOR FOR INITIAL ROLL              1 REVOLUTION    N 61
037531,000259:                                                                                                  #  LAT(SPL)      GEODETIC LATITUDE OF TARGET             1 REVOLUTION    N 61

Page 849

037533,000261:                                                                                                  #                (IMPACT LAT)
037534,000262:                                                                                                  #  LNG(SPL)      LONGITUDE OF TARGET (IMPACT LONG)       1 REVOLUTION    N 61
037535,000263: 
037536,000264:                                                                                                  #  FIGURE 7.0-2D         COMPUTER VARIABLES  (CONTINUED)
037537,000265: 
037538,000266: 

Page 850

037540,000268:                                                                                                  #  CONSTANTS AND GAINS                                                   VALUE
037541,000269:                                                                                                  #  -------------------                                                   -----
037542,000270: 
037543,000271:                                                                                                  #  C1            FACTOR IN ALP COMPUTATION                               1.25
037544,000272:                                                                                                  #  C16           CONSTD GAIN ON DRAG                                     0.01
037545,000273:                                                                                                  #  C17           CONSTD GAIN ON RDOT                                     0.002
037546,000274:                                                                                                  #  C18           BIAS VEL. FOR FINAL PHASE START                         500     FPS
037547,000275:                                                                                                  #  C20           MAX DRAG FOR DOWN-LIFT                                  210     FPSS
037548,000276:                                                                                                  #  C21           DRAG FOR NO LATERAL SWITCH                              140     FPSS
037549,000277:                                                                                                  #  CHOOK         FACTOR IN AHOOK COMPUTATION                             0.25
037550,000278:                                                                                                  #  CH1           FACTOR IN GAMMAL COMPUTATION                            1.0
037551,000279:                                                                                                  #  COS15         COS( 15 DEG)                                            0.965
037552,000280:                                                                                                  #  DLEWD0        INITIAL VARIATION IN LEWD                              -0.05
037553,000281:                                                                                                  #  DT            COMPUTATION CYCLE TIME INTERVAL                         2       SEC.
037554,000282:                                                                                                  #  GMAX          MAXIMUM ACCELERATION                                    257.6   FPSS    (8 G-S)
037555,000283:                                                                                                  #  KA1           FACTOR IN KA CALC                                       1.3 GS
037556,000284:                                                                                                  #  KA2           FACTOR IN KA CALC                                       0.2 GS
037557,000285:                                                                                                  #  KA3           FACTOR IN D0 CALC                                       90  FPSS
037558,000286:                                                                                                  #  KA4           FACTOR IN D0 CALC                                       40  FPSS
037559,000287:                                                                                                  #  KB1           OPTIMIZED UPCONTROL GAIN                                2.5
037560,000288:                                                                                                  #  KB2           OPTIMIZED UPCONTROL GAIN                                0.0025
037561,000289:                                                                                                  #  KDMIN         INCREMENT ON Q7F TO DETECT END OF KEPLER PHASE          0.5     FPSS
037562,000290:                                                                                                  #  KTETA         TIME OF FLIGHT CONSTANT                                 1000
037563,000291:                                                                                                  #  KLAT1         FACTOR IN KLAT CALC                                     1/24
037564,000292:                                                                                                  #  K44           GAIN USED IN INITIAL ROLL SECTION                       19749550 FPS
037565,000293:                                                                                                  #  LATBIAS       LATERAL SWITCH BIAS TERM                                0.41252961 NM
037566,000294:                                                                                                  #  LEWD1         NOMINAL UPCONTROL L/D                                   0.15
037567,000295:                                                                                                  #  POINT1        FACTOR TO REDUCE UPCONTROL GAIN                         0.1
037568,000296:                                                                                                  #  Q3            FINAL PHASE DRANGE/D V                                  0.07    NM/FPS
037569,000297:                                                                                                  #  Q5            FINAL PHASE DRANGE/ D GAMMA                             7050    NM/RAD
037570,000298:                                                                                                  #  Q6            FINAL PHASE INITIAL FLIGHT PATH ANGLE                   0.0349  RAD
037571,000299:                                                                                                  #  Q7F           MIN DRAG FOR UPCONTROL                                  6       FPSS
037572,000300:                                                                                                  #  Q7MIN         MIN VALUE FOR Q7 IN FACTOR CALCULATION                  805     FPSS    (DISABLE FACTOR)
037573,000301:                                                                                                  #  Q19           FACTOR IN GAMMAL1 CALCULATION                           0.5
037574,000302:                                                                                                  #  Q21           FACTOR IN Q2 CALCULATION.                               3500    NM
037575,000303:                                                                                                  #  Q22           FACTOR IN Q2 CALCULATION.                               -1992   NM
037576,000304:                                                                                                  #  VFINAL1       VELOCITY TO START FINAL PHASE ON INITIAL ENTRY          27000   FPS
037577,000305:                                                                                                  #  VFINAL        FACTOR IN INITIAL UP-DOWN CALC                          26600   FPS
037578,000306:                                                                                                  #  VLMIN         MINIMUM VL                                              18000   FPS
037579,000307:                                                                                                  #  VMIN          VELOCITY TO SWITCH TO RELATIVE VEL                      VSAT/2
037580,000308:                                                                                                  #  VRCONTRL      RDOT TO START INTO HUNTEST                              700     FPS
037581,000309:                                                                                                  #                VRCONT = COMPUTER NAME
037582,000310:                                                                                                  #  25NM          TOLERANCE TO STOP RANGE ITERATION                       25      NM
037583,000311:                                                                                                  #  VQUIT         VELOCITY TO STOP STEERING                               1000    FPS
037584,000312: 

Page 851

037586,000314:                                                                                                  #  CONVERSION FACTORS AND SCALING CONSTANTS
037587,000315:                                                                                                  #  ---------- ------- --- ------- ---------
037588,000316: 
037589,000317:                                                                                                  #  ATK   ANGLE IN RAD TO NM                                              3437.7468       NM/RAD
037590,000318:                                                                                                  #  GS    NOMINAL G VALUE FOR SCALING                                     32.2            FPSS
037591,000319:                                                                                                  #  HS    ATMOSPHERE SCALE HEIGHT                                         28500           FT
037592,000320:                                                                                                  #  J     GRAVITY HARMONIC COEFFICIENT                                    0.00162346      
037593,000321:                                                                                                  #  KWE   EQUATORIAL EARTH RATE                                           1546.70168      FPS
037594,000322:                                                                                                  #  MUE   EARTH GRAVITATIONAL CONSTANT                                    3.986032233 E 14 CUBIC M/ SEC SEC
037595,000323:                                                                                                  #  RE    EARTH RADIUS                                                    21202900        FT
037596,000324:                                                                                                  #  REQ   EARTH EQUATORIAL RADIUS                                         20925738.2      FT
037597,000325:                                                                                                  #  VSAT  SATELLITE VELOCITY AT RE                                        25766.1973      FPS
037598,000326:                                                                                                  #  WIE   EARTH RATE                                                      0.0000729211505 RAD/SEC
037599,000327: 
037600,000328:                                                                                                  #  FIGURE 7.0-3          CONSTANTS, GAINS AND CONVERSION FACTORS

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