https://github.com/virtualagc/virtualagc
Revision 078c79d8734a9ed2860303a7c1662004284fe853 authored by Ron Burkey on 07 August 2022, 15:04:04 UTC, committed by Ron Burkey on 07 August 2022, 15:04:04 UTC
assembly listings from yaASM and yaLEMAP. Added some debugging messages to 'make install'. Tweaked debugging messages that VirtualAGC embeds in 'simulate'. Verified buildability in Mint 21, 20, 19, 17, and verified buildability using clang in Mint 17.
1 parent 6bb1acc
Tip revision: 078c79d8734a9ed2860303a7c1662004284fe853 authored by Ron Burkey on 07 August 2022, 15:04:04 UTC
Fixed a potential string-overflow bug in yaASM. Removed timestamps from
Fixed a potential string-overflow bug in yaASM. Removed timestamps from
Tip revision: 078c79d
REENTRY_CONTROL.agc
### FILE="Main.annotation"
## Copyright: Public domain.
## Filename: REENTRY_CONTROL.agc
## Purpose: Part of the source code for Colossus 2A, AKA Comanche 055.
## It is part of the source code for the Command Module's (CM)
## Apollo Guidance Computer (AGC), for Apollo 11.
## Assembler: yaYUL
## Contact: Ron Burkey <info@sandroid.org>.
## Website: www.ibiblio.org/apollo.
## Pages: 844-882
## Mod history: 2009-05-08 RSB Adapted from the Colossus249/ file of the
## same name, using Comanche055 page images.
## 2009-05-23 RSB In a couple of 2OCT statements, removed the
## space between the first and second octal words.
## 2010-08-28 JL Added missing comment character. Fixed indentation.
## 2016-12-18 RSB Proofed comment text using octopus/ProoferComments
## and corrected the errors found.
## 2017-01-18 RSB Fixed comment-text errors noted while diff'ing
## vs Colossus 249.
## 2021-05-30 ABS Added empty page 882 to match scans.
##
## This source code has been transcribed or otherwise adapted from digitized
## images of a hardcopy from the MIT Museum. The digitization was performed
## by Paul Fjeld, and arranged for by Deborah Douglas of the Museum. Many
## thanks to both. The images (with suitable reduction in storage size and
## consequent reduction in image quality as well) are available online at
## www.ibiblio.org/apollo. If for some reason you find that the images are
## illegible, contact me at info@sandroid.org about getting access to the
## (much) higher-quality images which Paul actually created.
##
## Notations on the hardcopy document read, in part:
##
## Assemble revision 055 of AGC program Comanche by NASA
## 2021113-051. 10:28 APR. 1, 1969
##
## This AGC program shall also be referred to as
## Colossus 2A
## Page 844
# ENTRY INITIALIZATION ROUTINE
# -----------------------------
BANK 25
SETLOC REENTRY
BANK
COUNT* $$/ENTRY
EBANK= RTINIT
EBENTRY = EBANK7
EBAOG EQUALS EBANK6
NTRYPRIO EQUALS PRIO20 # (SERVICER)
CM/FLAGS EQUALS STATE +6
STARTENT EXIT # MM = 63
# COME HERE FROM CM/POSE. RESTARTED IN CM/POSE.
CS ENTMASK # INITIALIZE ALL SWITCHES TO ZERO
# EXCEPT LATSW, ENTRYDSP AND GONEPAST.
# GONEBY 112D BIT8 FLAG7, SELF INITIALIZING
INHINT
MASK CM/FLAGS
# ENTRYDSP = 92D B13
# GONEPAST=95D B10, RELVELSW=96D B9
# EGSW = 97D B8 NOSWITCH = 98D B7
# HIND=99D B6 INRLSW=100D B5
# LATSW=101D B4 .05GSW=102D B3
AD ENTRYSW # SET ENTRYDSP, LATSW, GONEPAST.
TS CM/FLAGS
RELINT
TC INTPRET
SLOAD
LODPAD
STORE LOD
SLOAD
LADPAD
STORE LAD
DMP # L/DCMINR = LAD COS(15)
COS15
STODL L/DCMINR
LATSLOPE
DMP SR1 # KLAT = LAD/24
LAD
## Page 845
STODL KLAT
Q7F
STODL Q7 # Q7 = Q7F
NEARONE # 1.0 -1BIT
STODL FACTOR
LAD
SIGN DCOMP
HEADSUP # MAY BE NOISE FOR DISPLAY P61
STCALL L/D # L/D = - LAD SGN(HEADSUP)
STARTEN1 # RETURN VIA GOTOADDR
VLOAD VXV
VN # (-7) M/CS
UNITR # .5 UNIT REF COORDS
UNIT DOT
RT # RT/2 TARGET VECTOR REF COORDS
STORE LATANG # LATANG = UNI.RT /4
DCOMP RTB
SIGNMPAC
STODL K2ROLL # K2ROLL = -SGN(LATANG)
LAD
DMP DAD
Q21
Q22
STORE Q2 # Q2 = -1152 + 500 LAD
SSP SSP
GOTOADDR # SET SELECTOR FOR INITIAL PASS
INITROLL
POSEXIT
SCALEPOP # SET CM/POSE TO CONTINUE AT SCALEPOP
RTB
SERVNOUT # OMIT INITIAL DISPLAY, SINCE 1ST GUESSBAD
# CALCULATE THE INITIAL TARGET VECTOR: RTINIT, ALSO RTEAST, RTNORM AND RT. ALL ARE .5 UNIT AND IN
# REFERENCE COORDINATES.
STARTEN1 STQ VLOAD
GOTOADDR
LAT(SPL) # TARGET COORDINATES
CLEAR CLEAR # DO CALL USING PAD RADIUS. WILL UNIT IT.
ERADFLAG # ANYWAY.
LUNAFLAG
STODL LAT
3ZEROS
STODL LAT +4 # SET ALT=0.
PIPTIME # ESTABLISH RTINIT AT TIME OF PRESENT
## Page 846
# RN AND VN.
STCALL TIME/RTO # SAVE TIME BASE OF RTINIT.
LALOTORV # C(MPAC) =TIME (PIPTIME)
UNIT # ANSWER IN ALPHAV ALSO
STODL RTINIT # .5 UNIT TARGET REF COORDS
500SEC # NOMINAL ENTRY TIME FOR P63
# TIME/RTO = PIPTIME, STILL.
STCALL DTEAROT # INITIALIZE EARROT
EARROT1 # GET RT
DOT SL1
UNITR # RT/2 IN MPAC
ACOS
STCALL THETAH # RANGE ANGLE /360
GOTOADDR # RETURN TO CALLER
500SEC 2DEC 50000 B-28 # CS
ENTMASK OCT 11774
ENTRYSW OCT 11010 # ENTRYDSP B13, GONEPAST B10, LATSW B4
## Page 847
SCALEPOP CALL
TARGETNG
EXIT
REFAZE10 TC PHASCHNG
OCT 10035 # SERVICER 5.3 RESTART AT REFAZE10
TC INTPRET
# JUMP TO PARTICULAR RE-ENTRY PHASE:
# SEQUENCE
GOTO
GOTOADDR
# GOTOADDR CONTAINS THE ADDRESS OF THE ROLL COMMAND EQUATIONS APPROPRIATE TO THE CURRENT PHASE OF
# RE-ENTRY. SEQUENCING IS AS FOLLOWS:
#
# INITROLL ADDRESS IS SET HERE INITIALLY. HOLDS INITIAL ROLL ATTITUDE UNTIL KAT IS EXCEEDED. THEN HOLDS NEW ROLL
# ATTITUDE UNTIL VRTHRESH IS EXCEEDED. THEN BRANCHES TO
#
# HUNTEST THIS SECTION CHECKS TO SEE IF THE PREDICTED RANGE AT NOMINAL L/D FROM PRESENT CONDITIONS IS LESS
# THAN THE DESIRED RANGE.
# IF NOT - A ROLL COMMAND IS GENERATED BY THE CONSTANT DRAG CONTROLLER.
# IF SO - CONTROL AND GOTOADDR ARE SET TO UPCONTRL.
# USUALLY NO ITERATION IS INVOLVED EXCEPT IF THE RANGE DESIRED IS TOO LONG ON THE FIRST PASS THROUGH
# HUNTEST.
#
# UPCONTRL CONTROLS ROLL DURING THE SUPER-CIRCULAR PHASE. UPCONTRL IS TERMINATED EITHER
# (A) WHEN THE DRAG (AS MEASURED BY THE PIPAS) FALLS BELOW Q7, OR
# (B) IF RDOT IS NEGATIVE AND REFERENCE VL EXCEEDS V.
# IN CASE (A), GOTOADDR IS SET TO KEP2 AND IN CASE (B), TO PREDICT3 SKIPPING THE KEPLER PHASE OF
# ENTRY.
#
# KEP2 GOTOADDR IS SET HERE DURING THE KEPLER PHASE TO MONITOR DRAG. THE SPACECRAFT IS INSTANTANEOUSLY
# TRIMMED IN PITCH AND YAW TO THE COMPUTED RELATIVE VELOCITY. THE LAST COMPUTED ROLL ANGLE IS MAINTAINED.
# WHEN THE MEASURED DRAG EXCEEDS Q7 +0.5, GOTOADDR IS SET TO
#
# PREDICT3 THIS CONTROLS THE FINAL SUB-ORBITAL PHASE. ROLL COMMANDS CEASE
# WHEN V IS LESS THAN VQUIT . AN EXIT IS MADE TO
#
# P67.1 THE LAST COMPUTED ROLL ANGLE IS MAINTAINED. RATE DAMPING IS DONE IN PITCH AND YAW. PRESENT LATITUDE
# AND LONGITUDE ARE COMPUTED FOR DISPLAY.
# ENTRY IS TERMINATED WHEN DISKY RESPONSE IS MADE TO TO THIS FINAL FLASHING DISPLAY.
## Page 848
# PROCESS AVERAGE G OUTPUT...SCALE IT AND GET INPUT DATA
# * START TARGETING ...
EBANK= RTINIT
# TARGETNG IS CALLED BY P61, FROM GROUP 4.
# TARGETNG IS CALLED BY ENTRY, FROM GROUP 5.
# ALL MM COME HERE.
TARGETNG BOFF VLOAD # ENTER WITH PROPER EB FROM CM/POSE(TEST)
RELVELSW # RELVELSW = 96D BIT9
GETVEL # WANT INERTIAL VEL. GO GET IT.
-VREL # NEW V IS RELATIVE, CONTINUE
VCOMP GOTO # (VREL) = (V) + KWE UNITR*UNITW
GETUNITV -1 # - VREL WAS LEFT BY CM/POSE
GETVEL VLOAD VXSC # INERTIAL V WANTED
VN # KVSCALE = (12800 / .3048) / 2VS
KVSCALE # KVSCALE = .81491944
STORE VEL # V/2 VS
GETUNITV UNIT STQ
60GENRET
STODL UNITV
34D
STORE VSQUARE # VSQ/4
DSU # LEQ = VSQUARE - 1
FOURTH # 4 G-S FULL SCALE
STODL LEQ # LEQ/4
36D
STOVL V # V/2 VS = VEL/2 VS
VEL
DOT SL1 # RDOT= V.UNITR
UNITR
STOVL RDOT # RDOT /2 VS
DELV # PIPA COUNTS IN PLATFORM COORDS.
ABVAL DMP
KASCALE
SL1 BZE
SETMIND
DSTORE STOVL D # ACCELERATION USED TO APPROX DRAG
VEL
VXV UNIT # UNI = UNIT(V*R)
## Page 849
UNITR
STORE UNI # .5 UNI REF COORDS.
BOFF DLOAD
RELVELSW
GETETA
3ZEROS
UPDATERT DSU DAD # PIPTIME-TIME/RTO =ELAPSED TIME SINCE
# RTINIT WAS ESTABLISHED.
TIME/RTO
PIPTIME
STCALL DTEAROT # GET PREDICTED TARGET VECTOR RT
EARROT2
DOT SETPD # SINCE (RT) UNIT VECT, THIS IS 1/4 MAX
UNI # LATANG = RT.UNI
0
STOVL LATANG # LATANG = MAC LATANG / 4
RT
CLEAR
GONEBY # SHOW HAVE NOT GONE PAST TARGET.
VXV DOT # IF RT*UNITR.UNI NEG, GONEBY=1
UNITR # GONEPAST IS CONDITIONAL SW SET IN
UNI # FINAL PHASE.
BPL SET
+2
GONEBY # SHOW HAVE GONE PAST TARGET.
VLOAD
RT
GETANGLE DOT DSU # THETA = ARCCOS(RT.UNITR)
UNITR
NEAR1/4 # TO IMPROVE ACCURACY, CALC RANGE BY
BPL DAD # TINYTHET IF HIGH ORDER PART OF
TINYTHET # ARCCOS ARGUMENT IS ZERO
NEAR1/4
SL1 ACOS
THETDONE STORE THETAH # THETAH/360
# HI WORD, LO BIT =1.32 NM=360 60/16384
BON DCOMP
GONEBY # =1 IF HAVE GONE PAST TARGET.
# (SIGN MAY BECOME ERRATIC VERY NEAR
# TARGET DUE TO LOSS OF PRECISION.)
+1
STODL RTGON67 # RANGE ERROR: NEG IF WILL FALL SHORT.
D
DSU BMN
## Page 850
.05G
NO.05G
SET VLOAD
.05GSW
DELVREF
PUSH DOT
UXA/2
SL1 DSQ
PDVL VSQ # EXCHANGE WITH PDL.
DSU DDV
0
BOV SQRT
NOLDCALC # OVFL LAST CLEARED IN EARROT2 ABOVE.
STORE L/DCALC
NOLDCALC GOTO
60GENRET
NO.05G CLEAR GOTO # THIS WAY FOR DAP. (MAY INTERRUPT)
.05GSW # .05GSW = 102D B3
NOLDCALC # KEEP SINGLE EXIT FOR TARGETNG
## Page 851
# SUBROUTINES CALLED BY SCALEPOP (TARGETING):
BANK 26
SETLOC REENTRY1
BANK
COUNT* $$/ENTRY
GETETA DLOAD DDV # D = D +D(-RDOT/HS -2D/V) DT/2
# DT/2 = 2/2 =1
RDOT
-HSCALED
PDDL DMP
D
-KSCALE
DDV DAD
V
# -RDOT/HS FROM PDL.
DMP DAD
D
D
STORE D
BON DLOAD # EGSW INDICATES FINAL PHASE.
EGSW
SUBETA
THETAH
DMP GOTO
KTETA # = 1000X2PI/(2)E14 163.84
UPDATERT
SUBETA DLOAD DSU # SWITCH FROM INERTIAL TO RELATIVE VEL.
V
VMIN
BPL SET
SUBETA2
RELVELSW
SUBETA2 DLOAD DMP
THETAH
KT1 # KT1 = KT
DDV GOTO
V # KT = RE(2 PI)/2 VS 16384 163.84/ 2 VSAT
UPDATERT
SETMIND DLOAD GOTO
1BITDP
DSTORE
## Page 852
TINYTHET DSU ABS # ENTER WITH X-.249
1BITDP +1 # GET 1/4 - MPAC
SL SQRT # SCALE UP BEFORE SQRT
13D # HAS FACTOR FOR UP SCALING
DMP GOTO
KACOS
THETDONE
## Page 853
# * START INITIAL ROLL ...
BANK 25
SETLOC REENTRY
BANK
COUNT* $$/ENTRY
# MM = 63, 64 ..
INITROLL BON BOFF # IF D- .05G NEG, GO TO LIMITL/D
INRLSW
INITRL1
.05GSW
LIMITL/D
# MM = 64, NOW
# 3
# KA = KA1 LEQ + KA2
DLOAD DSQ
LEQ
DMP DDV
LEQ
1/KA1 # = 25 /(64 1.8)
DAD RTB
KA2 # = .2
P64 # ROLLC VI RDOT
# XXX.XX DEG XXXXX. FPS XXXXX. FPS
STORE KAT
DSU BMN
KALIM
+4
DLOAD
KALIM
STORE KAT
DLOAD DSU # IF V-VFINAL1 NEG, GO TO FINAL PHASE.
V
VFINAL1
CLEAR BPL # (CAN'T CLEAR INRLSW AFTER HERE: RESTARTS)
GONEPAST # GONEPAST WAS INITIALLY SET=1 TO FORCE
# ROLLC TO REMAIN AS DEFINED BY HEADSUP
# UNTIL START OF P64. (UNTIL D > .05G)
D0EQ
SSP GOTO
GOTOADDR
KEP2 # AND IDLE UNTIL D > 0.2 G. (NO P66 HERE)
INROLOUT # GO TO LIMITL/D AFTER SETTING INRLSW.
D0EQ DLOAD DMP # D0 = KA3 LEQ + KA4
## Page 854
LEQ
KA3
DAD
KA4
STORE D0 # D0/805
BDDV BOV
C001 # (-4/25 G) B-8
+1 # CLEAR OVFIND, IF ON.
STODL C/D0 # (-4/D0) B-8
LAD # IF V-VFINAL +K(RDOT/V)CUBED POS,L/D=-LAD
STODL L/D
RDOT
DDV PUSH
V
DSQ DMP
DDV DSU
1/K44
VFINAL
# 3
# V-VFINAL +(RDOT/V) / K44 OVFL $
DAD BOV
V
INROLOUT # GO TO LIMITL/D AFTER SETTING INRLSW.
BMN DLOAD
INROLOUT # GO TO LIMITL/D AFTER SETTING INRLSW.
LAD
DCOMP
STORE L/D
# SET INRLSW AT END FOR RESTART PROTECTION
INROLOUT BOFSET # END OF PRE .05G PATH OF INITROLL.
INRLSW # SWITCH IS ZERO INITIALLY.
LIMITL/D # (GO TO)
KATEST DLOAD DSU # IF KAT - D POS, GO TO CONSTD
KAT
D # IF POS, OUT WITH COMMAND VIA LIMITL/D
BPL GOTO
LIMITL/D
CONSTD
INITRL1 DLOAD DAD # IF RDOT + VRCONT POS, GO TO HUNTEST
RDOT
VRCONT
BMN CALL # IF POSITIVE, FALL INTO HUNTEST.
KATEST
FOREHUNT # INITIALIZE HUNTEST.
## Page 855
# * START HUNT TEST ..
# MM = 64
SSP # INITIALIZE HUNTEST ON FIRST PASS
GOTOADDR
HUNTEST # MUST GO AFTER FOREHUNT FOR RESTARTS.
HUNTEST DLOAD
D
STODL A1 # A1/805 = A1/25G
LAD
STODL TEM1B
RDOT
BMN DLOAD # IF RDOT NEG,TEM1B=LAD, OTHERWISE = LEWD
A0CALC
LEWD
STODL TEM1B
RDOT
A0CALC DDV DAD # V1 = V + RDOT/TEM1B
TEM1B
V
STODL V1 # V1/2 VS
RDOT
DSQ DDV # A0=(V1/V)SQ(D+RDOT SQ/(TEM1B 2 C1 HS)
TEM1B
DDV DAD
2C1HS
D
DMP DMP
V1
V1
DDV
VSQUARE
STODL A0 # A0/805 = A0/25G
RDOT
BPL DLOAD
V1LEAD
A0
STORE A1 # A1/25G
V1LEAD DLOAD BPL # IF L/D NEG, V1=V1 - 1000
L/D
HUNTEST1
DLOAD DSU
V1
## Page 856
VQUIT
STORE V1
HUNTEST1 DLOAD DMP # ALP = 2 C1 HS A0/LEWD V1 V1
A0
2C1HS
DDV SETPD
V1
0
DDV DDV
V1
LEWD
STORE ALP
BDSU BDDV # FACT1 = V1 / (1 - ALP)
BARELY1
V1
STODL FACT1 # FACT1 / 2VS
ALP
DSU DMP # FACT2 = ALP(ALP - 1) / A0
BARELY1
ALP
DDV
A0
STORE FACT2 # FACT2 (25G)
DMP DAD
Q7 # Q7 / 805 = Q7 / 25G
ALP # VL=FACT1 (1-SQRT(Q7 FACT2 +ALP) )
SQRT BDSU
BARELY1
DMP
FACT1
STORE VL # VL / 2 VS
BDSU DMP # GAMMAL1 = LEWD (V1-VL)/VL
V1
LEWD
DDV
VL
STODL GAMMAL1 # GAMMAL1 USED IN UPCONTROL
# GAMMAL1 = PDL 22D.
VL
DSU BMN # IF VL-VLMIN NEG, GO TO PREFINAL
VLMIN
PREFINAL
DLOAD DSQ
## Page 857
VL
STODL VBARS # VBARS / 4 VS VS
HALVE # IF VSAT-VL NEG, GO TO CONSTD
DSU BMN
VL
BECONSTD # SET MODE=HUNTEST, CONTINUE IN CONSTD
STODL DVL # DVL / 2VS
HALVE
STORE VS1 # VS1 = VSAT
DSU BMN # IF V1 GREATER THAN VSAT, GO ON
V1
GETDHOOK
BDSU
DVL
STODL DVL # DVL = DVL - (VSAT-V1) = V1 - VL
V1
STORE VS1 # VS1 = V1, IN THIS CASE
GETDHOOK DLOAD CALL # DHOOK=((1-VS1/FACT1) SQ -ALP)/FACT2
VS1 # VS1 / 2 VS
DHOOKYQ7 # GO CALC DHOOK
STORE DHOOK # DHOOK / 25G
SR DDV
6 # CHOOK
Q7
DSU
CHOOK # = .25/16 = (-6)
STORE AHOOKDV
DAD DMP # GAMMAL= GAMMAL1-CH1 DVL SQ(1+AHOOK DVL)
1/16TH
CH1
DMP DMP
DVL
DVL
DDV DDV
DHOOK
VBARS
BDSU BMN
GAMMAL1
NEGAMA
HUNTEST3 STORE GAMMAL
DSU # GAMMAL1=GAMMAL1 +Q19 (GAMMAL-GAMMAL1)
GAMMAL1
DMP DAD
## Page 858
Q19
GAMMAL1
STODL GAMMAL1
GAMMAL
## Page 859
# *START RANGE PREDICTION ...
# C(MPAC) = GAMMAL
RANGER DSQ SR2 # COSG = 1-GAMMAL SQ/2, TRUNCATED SERIES
BDSU
HALVE
STODL COSG/2
VBARS # E=SQRT(1+VBARS........
DSU DMP
HALVE
VBARS
DMP DMP
COSG/2
COSG/2
SL2 DAD
C1/16 # C1/16 = 1/16
SQRT PDDL # E/4 INTO PDL
VBARS
DMP DMP # ASKEP/2 = ARCSIN(VBARS COSG SING/E)
COSG/2
GAMMAL
DDV ASIN
SL1 PUSH # ASKEP TO PDL 0.
STODL ASKEP # BALLISTIC RANGE ASKEP/2PI
# FOR TM, STORE RANGE COMPONENTS OVERLAPPING (SP)
VL
DMP DAD # ASP1 = Q2 + Q3 VL
Q3
Q2
STORE ASP1 # FINAL PHASE RANGE ASP1/2 PI
PDDL DSQ # ASP1 TO PDL 2.
V1
# 2
# ASPUP= -C12 LOG(V1 Q7/VBARS A0)/GAMMAL1
DMP DDV
Q7
VBARS
DDV CALL
A0
LOG # RETURN WITH -LOG IN MPAC
DMP DDV
C12
GAMMAL1
STORE ASPUP # UP PHASE RANGE ASPUP / 2 PI
## Page 860
PDDL DMP # ASPUP TO PDL 4.
KC3 # KC3 = -4 VS VS / 2 PI 805 RE
# ASPDWN = KC3 RDOT V / A0
RDOT
DMP DDV
V
A0
DDV PUSH # ASPDWN TO PDL 6.
LAD
STODL ASPDWN # RANGE TO PULL OUT ASPDWN /2 PI
Q6
DSU DMP # ASP3 = Q5(Q6-GAMMAL)
GAMMAL
Q5
STOVL ASP3 # GAMMA CORRECTION ASP3/2PI
ASKEP # GET HI-WD AND
STODL ASPS(TM) # SAVE HI-WORD OF ASP'S FOR TM.
ASP3
DAD DAD
# ASPDWN FROM PDL 6.
# ASPUP FROM PDL 4.
DAD DAD
# ASP1 FROM PDL 2.
# ASKEP FROM PDL 0.
DSU BOVB # CLEAR OVFIND.
THETAH
TCDANZIG
STORE DIFF # DIFF = (ASP-THETAH) / 2 PI
# ASP=ASKEP+ASP1+ASPUP+ASP3+ASPDWN = TOTAL RANGE
ABS DSU # IF ABS(THETAH-ASP) -25NM NEG, GO TO UPSY
25NM
BMN BON
GOTOUPSY
HIND
GETLEWD
DLOAD BPL
DIFF
DCONSTD # EVENTUALLY SETS MODE = HUNTEST.
GETLEWD DLOAD DMP
# DLEWD = DLEWD (DIFF/(DIFFOLD-DIFF))
DLEWD
DIFF
PDDL DSU
DIFFOLD
DIFF
## Page 861
BDDV
LWDSTORE STADR
STORE DLEWD
DAD BMN # IF LEWD+DLEWD NEG, DLEWD=-LEWD/2
LEWD
LEWDPTR
BOV
LEWDOVFL
STORE LEWD
SIDETRAK EXIT
CA EBENTRY
TS EBANK
CA PRIO16 # DROP GRP 5 RESTART PRIO TO 1 LESS THAN
TS PHSPRDT5 # GRP 4.
TC PHASCHNG
OCT 00474 # RESTART GRP 4 AT PRE-HUNT.
# FORCE RESTART TO PICK UP IN GRP 4:
# USE PRIO 17 FOR GRP 4 (< SERVICER PRIO)
CA PRIO16 # CONTINUE GRP 5 AT LOWER PRIO THAN EITHER
# GRP 4 OR SERVICER.
TC PRIOCHNG
CAF ADENDEXT # SIDETRACK NEXT PASS UNTIL THIS ONE DONE.
TS GOTOADDR # ONLY AFTER RESTART IS LEFT AFTER DETOUR.
TC INTPRET
DLOAD SET
DIFF
HIND
STODL DIFFOLD # DIFFOLD / 2 PI
Q7F
STCALL Q7 # Q7 / 805 FPSS
HUNTEST # (GO TO)
LEWDOVFL DLOAD
NEARONE
STCALL LEWD
DCONSTD # (GO TO) ALSO WILL SET MODE = HUNTEST
LEWDPTR DLOAD SR1
LEWD
DCOMP GOTO
LWDSTORE
## Page 862
# NEGAMA IS PART OF HUNTEST ...
NEGAMA DMP DMP # ENTER WITH GAMMAL IN MPAC
VL
1/3RD
PDDL DMP # PUSH GAMMAL VL/3
LEWD
1/3RD
PDDL DAD # PUSH LEWD/3
AHOOKDV
1/24TH
DMP DMP # DEL VL = (GAMMAL VL/3)/(LEWD/3-DVL
DVL # (2/3 + AHOOKDV)(CH1 GS/DHOOK VL))
CH1
DDV DDV
DHOOK
VL
BDSU BDDV
# LEWD/3
# GAMMAL VL /3
DAD
VL
STCALL VL # VL/2 VS
DHOOKYQ7 # GO CALC Q7
# Q7=((1-VL/FACT1)SQ - ALP)/FACT2
STODL Q7 # Q7 / 25G
VL
DSQ
STODL VBARS # VBARS / 4 VS VS
3ZEROS
GOTO # SET GAMMAL = 0
HUNTEST3
DHOOKYQ7 SR1 DDV # SUBROUTINE TO CALC DHOOK OR Q7)
FACT1
BDSU SL1
HALVE
DSQ DSU
ALP
DDV RVQ
FACT2
## Page 863
# COME TO PRE-HUNT WHEN RESTART OCCURS AFTER
# HUNTEST IS SIDE-TRACKED AT SIDETRAK.
# PICK UP IN GROUP 4.
PRE-HUNT TC INTPRET
CLEAR CALL
HIND # HIND 99D BIT 6 FLAG 6
FOREHUNT # RE-INITIALIZE HUNTEST AFTER RE-START.
GOTO
HUNTEST
FOREHUNT DLOAD # INITIALIZE HUNTEST.
3ZEROS
STODL DIFFOLD
DLEWD0
STODL DLEWD
LEWD1
STORE LEWD
RVQ
ADENDEXT CADR ENDEXIT
## Page 864
# * START UP CONTROL ...
# MM = 65
GOTOUPSY RTB # END OF HUNTEST
P65 # HUNTEST USE OF GRP4 IS DISABLED BY P65
# USE FOR DISPLAY.
# SET MODE = UPCONTRL.
# RETURN FROM P65 DIRECTLY TO UPCONTRL
# VIA THE GOTOADDR AT REFAZE10.
UPCONTRL DLOAD DSU # IF D-140 POS, NOSWITCH =1
D # (SUPPRESS LATERAL SWITCH)
C21
BMN SET
+2
NOSWITCH
DLOAD DSU # IF V-V1 POS, GO TO DOWN CONTROL.
V
V1
BPL DLOAD
DOWNCNTL
D
DSU BMN # IF D- Q7 NEG, GO TO KEP
Q7
KEP
DLOAD BPL # IF RDOT NEG, DO VLTEST
RDOT
CONT1
VLTEST DLOAD DSU # IF V-VL-C18 NEG,EGSW=1,MODE=PREDICT3
V
VL
DSU BMN
C18
PREFINAL
CONT1 DLOAD # IF D-A0 POS, L/D = LAD, GO TO LIMITL/D
D
DSU BMN
A0
CONT3
DLOAD GOTO
LAD
STOREL/D
CONT3 DLOAD DMP # VREF=FACT1(1-SQRT(FACT2 D + ALP))
D
FACT2
## Page 865
DAD SQRT
ALP
BDSU DMP
BARELY1
FACT1
STORE VREF # VREF / 2VS
BDSU DMP # RDOTREF = LEWD(V1-VREF)
V1
LEWD
STODL RDOTREF # RDOTREF / 2VS
VS1
DSU BMN # IF VSAT-VREF NEG, GO TO CONTINU2
VREF
CONTINU2
PUSH PUSH # VS1-VREF TO PDL TWICE
DMP DDV # RDHOOK=CH1(1+DV AHOOKDV/DVL) DV DV
AHOOKDV # /DHOOK VREF
DVL # WHERE DV = (VS1-VREF)
DAD DMP
1/16TH
CH1
DMP DMP
# VS1-VREF FROM PDL TWICE.
DDV
DHOOK
DDV BDSU
VREF
RDOTREF # C(RDOTREF)= LEWD (V1-VREF)
STORE RDOTREF # RDOTREF = RDOTREF - RDHOOK
CONTINU2 DLOAD DSU
D
Q7MIN
BOVB BMN
TCDANZIG # CLEAR OVFL IND, IF ON.
UPCNTRL3
DLOAD DSU
A1
Q7
PDDL DSU
D
Q7
DDV STADR
STORE FACTOR # FACTOR / 25G
## Page 866
# SKIPPER
# DELTA L/D=-((RDOT-RDOTREF)F1 KB1+V-VREF)F1 KB2
# WHERE F1 = FACTOR
UPCNTRL3 DLOAD
RDOT
DSU DMP # L/D = LEWD
RDOTREF # -((RDOT-RDOTREF)F1/KB1+V-VREF)F1/KB2
FACTOR
DDV DAD
1/KB1
V
DSU DMP
VREF
FACTOR
DDV PUSH
-1/KB2 # DELTA L/D INTO PDL
BOV ABS # NONLINEAR CIRCUIT FOR REDUCING HIGH GAIN
GOMAXL/D
DSU BMN
PT1/16
NEXT1
DMP DAD
POINT1
PT1/16
SIGN PUSH # ATTACH SIGN OF PUSH TO MPAC THEN PUSH
NEXT1 DLOAD SL4
# DELTA L/D FROM PDL.
DAD
LEWD
NEGTESTS BOV PUSH # L/D TO PDL FOR USE IN NEGTESTS.
GOMAXL/D
STODL L/D
# IF D-C20 POS, LATSW =0
# AND IF L/D NEG, L/D = 0.
D
DSU BMN
C20
LIMITL/D
CLEAR DLOAD
LATSW # =21D. ROLL OVER TOP, REGARDLESS.
# L/D FROM PDL.
BPL DLOAD
LIMITL/D
3ZEROS
STCALL L/D
LIMITL/D # (GO TO)
## Page 867
DCONSTD DLOAD # TWO RANGER ENTRIES TO CONSTD HERE
DIFF
# SAVE OLD VALUE OF DIFF FOR NEXT PASS.
STODL DIFFOLD # DIFFOLD / 2 PI
Q7F
STORE Q7
BECONSTD SSP RTB # A HUNTEST ENTRY INTO CONSTD.
GOTOADDR # RESET MODE TO HUNTEST
HUNTEST
KILLGRP4 # DEACTIVATE GRP4 FROM HUNTEST.
CONSTD BOVB
TCDANZIG # CLEAR OVF IND IF ON.
DLOAD DMP
LEQ
C/D0 # C/D0 = -4/D0 B-8
PDDL DMP # LEQ C/D0 INTO PDL
2HS # 2HS / 4 VS VS
D0
DDV DAD # RDOTREF = -2 HS D0/V
V
RDOT
DMP DAD
K2D # C/D0 LEQ + K2D(RDOT-RDOTREF) INTO PD
PDDL
D0 # D0 /805
CONSTD1 BDSU # ENTER WITH DREF IN MPAC
D
DMP DAD
K1D # K2D TERM FROM PUSH
SL GOTO
8D
NEGTESTS # (GO TO)
DOWNCNTL BOVB # INITIAL PART OF UPCONTROL.
TCDANZIG # CLEAR OVFIND, IF ON.
DLOAD SR
LAD
8D
PDDL DSU # RDTR = LAD(V1-V)
V
V1
DMP DAD
LAD
## Page 868
RDOT
DMP DAD
K2D
# PUSH UP LAD.
PDDL DSU # LAD + K2D(RDOT-RDTR) INTO PD
V1
V
DSQ DMP
LAD
DDV PDDL # (V1-V)SQ LAD/(2 C1 HS) INTO PD
2C1HS
V1
DSQ DDV
VSQUARE
BDDV DSU # DREF = (V/V1)SQ A0 - PD
A0
# PUSH UP HERE
GOTO # C(MPAC) = DREF
CONSTD1
# 2 2
# DREF = (V/V1) A0 -(V-V1) LAD/2 C1 HS
## Page 869
# * START BALLISTIC PHASE ...
# MM = 66 UPCONTRL ENTRY INTO KEP2.
KEP RTB SSP
P66 # DISPLAY TRIM GIMBAL ANGLE VALUES.
GOTOADDR # SET GOTOADDR TO KEPLER PHASE.
KEP2
# KEP2 CAN ALSO BE STARTED UP DIRECTLY FROM INITROLL
# IN P64. PROGRAM WILL IDLE IN P64 UNTIL D EXCEEDS
# .2 G BEFORE GOING ON TO P67.
KEP2 DLOAD DSU # IF Q7F+KDMIN -D NEG, GO TO FINAL PHASE.
Q7FKDMIN # (Q7F + KDMIN)/805
D
BMN TLOAD
PREFINAL
# SET ROLLHOLD = ROLLC, IN CASE CMDAPMOD
ROLLC # = +1 EVER ENTERED.
BON TLOAD # IF D > .05G, KEEP PRESENT ROLL COMMAND.
.05GSW # IF D < .05G, SET ROLL COMMAND = 0.
+2
3ZEROS # SET ROLLC & ROLLHOLD =0.
+2 STCALL ROLLC # (SP ROLLHOLD FOLLOWS DP ROLLC)
P62.3 # CALC DESIRED GIMBAL ANGLES AT PRESENT
# RN, VN TO YIELD TRIM ATTITUDE.
# AVAILABLE IN CPHI'S FOR N22.
## Page 870
# START FINAL PHASE ..
# MM = 67
PREFINAL SSP RTB
GOTOADDR # RESTART PROTECT: RESET GOTOADDR IF CAME
PREFINAL # FROM HUNTEST.
P67 # DISABLES GRP4. FINE IF FROM HUNTEST. BUT
# MAY ALSO REMOVE RESTART PROTECTION OF
# N69 (P65).
# ROLLC XRNGERR DNRNGERR
# XXX.XX DEG XXXX.X NM XXXX.X NM
SET SSP
EGSW
GOTOADDR
PREDICT3
PREDICT3 DLOAD DSU # IF V-VQUIT NEG, STOP STEERING
V
VQUIT
BMN EXIT
STEEROFF
CA EBENTRY # PRECAUTIONARY.
TS EBANK
CA TWELVE
BACK TS JJ
CS V
INDEX JJ
AD VREFER # VREF - V, HIGHEST VREF AT END OF TABLE.
CCS A # IF VREF-V POS LOOP BACK
CCS JJ # DECREMENT JJ, JJ CANNOT BE ZERO
TCF BACK
AD ONE
TS TEM1B # V-VREF IN TEM1B (MUST BE POSITIVE NUM)
INDEX JJ
CS VREFER
INDEX JJ
AD VREFER +1 # V(K+1) - V(K) (POS NUM)
XCH TEM1B
ZL
EXTEND
DV TEM1B
TS GRAD # GRAD = (V-VREF)/(VK+1 - VK) (POS NUM
CAF FIVE
## Page 871
BACK2 TS MM
CAF THIRTEEN
ADS JJ
INDEX A
CS VREFER
INDEX JJ
AD VREFER +1 # X(K+1) - X(K)
EXTEND
MP GRAD
INDEX JJ
AD VREFER
INDEX MM
TS FX # FX = AK + GRAD (AK+1 - AK)
CCS MM
TCF BACK2
XCH FX +1 # ZERO FX +1 AND GET DREFR
AD D
EXTEND
MP FX +5 # F1
DXCH MPAC # MPAC = F1(D-DREF)
EXTEND
DCS RDOT # FORM RDOTREF - RDOT
DDOUBL
DDOUBL
DDOUBL # SCALE UP BY 8 FOR THIS PHASE.
AD FX +3 # RDOTREF
EXTEND
MP FX +4 # F2
AD FX +2 # RTOGO
DAS MPAC # ADD F2(DADV1-DADVR)
CA MPAC
TS PREDANG
# L/D = LOD + (THETA- PREDANG)/ Y
TC INTPRET
SR3 DSU
THETAH
BON BOFF
GONEPAST
GONEGLAD
GONEBY
HAVDNRNG
DLOAD SET # SET GONEPAST IF GONEBY SET & LATCH IN-
MAXRNG # DISPLAY = 9999.9 IF GONEBY PLACE
GONEPAST
STCALL DNRNGERR
GONEGLAD
HAVDNRNG STORE DNRNGERR # = (PREDANG - THETA) /360
## Page 872
DCOMP # FALL SHORT IF NEG, OVERSHOOT IF POS
BOVB DDV
TCDANZIG # CLEAR OVFIND IF ON.
FX # FX= DRANGE/D L/D = Y
SL BOV
5
GOMAXL/D
DAD BOV
LOD
GOMAXL/D
STCALL L/D
GLIMITER # (GO TO)
# GONEGLAD AND GOPOSMAX ENTRY POINTS FOR GLIMITER ...
GONEGLAD DLOAD # SET L/D = -LAD
GONEGLAD # (ANY NEGATIVE NUMBER WILL DO)
GOMAXL/D RTB DMP # L/D = LAD SIGN(MPAC)
SIGNMPAC
LAD
STORE L/D # AND FALL INTO GLIMITER SECTION
GLIMITER DLOAD DSU # IF GMAX/2-D POS, GO TO LIMITL/D
GMAX/2
D
BPL DAD # IF GMAX -D NEG, GO TO GOPOSLAD
LIMITL/D
GMAX/2
BMN DMP
GOPOSLAD
2HS
PDDL DMP # 2HS(GMAX-D) INTO PD
LEQ
1/GMAX
DAD DMP
LAD
PDDL DDV # 2HS(GMAX-D) (LEQ/GMAX+LAD) INTO PD
2HSGMXSQ
VSQUARE
DAD SQRT # XLIM = SQRT(PD+(2HSGMAX/V)SQ)
DAD BPL # IF RDOT+XLIM POS, GO TO LIMITL/D
RDOT
LIMITL/D
GOPOSLAD DLOAD
LAD
STOREL/D STORE L/D
## Page 873
LIMITL/D DLOAD
L/D
STODL L/D1
VSQUARE
BON # NO LATERAL CONTROL IF PAST TARGET
GONEPAST
L355
DMP DAD # Y= KLAT VSQUARE + LATBIAS
KLAT
LATBIAS # Y INTO PD
L350 PDDL ABS # IF ABS(L/D)-L/DCMINR NEG, GO TO L353
L/D
DSU BMN
L/DCMINR
L353
DLOAD SIGN # IF K2ROLL LATANG NEG, GO TO L357
LATANG
K2ROLL
BMN DLOAD
L357
SR1 PUSH # Y = Y/2
L353 DLOAD SIGN # IF LATANG SIGN(K2ROLL)-Y POS, SWITCH
LATANG
K2ROLL
DSU
BMN DLOAD
L355
K2ROLL
BONCLR DCOMP # IF NOSWITCH =1, K2ROLL= K2ROLL
NOSWITCH
L355
STORE K2ROLL # K2ROLL = -K2ROLL
L355 DLOAD DDV # ROLLC = ACOS( (L/D1) / LAD)
L/D1
LAD # MPAC SET TO +-1 IF OVERFLOW***
SR1 ACOS
SIGN CLEAR
K2ROLL
NOSWITCH
STORE ROLLC
ENDEXIT EXIT
OVERNOUT CA BIT13 # ENTRYDSP =92D B13
MASK CM/FLAGS
EXTEND
BZF NODISKY # OMIT DISPLAY.
## Page 874
CA ENTRYVN # ALL ENTRY DISPLAYS ARE DONE HERE.
TC BANKCALL
CADR REGODSPR # NO ABORT IF DISKY IN USE
NODISKY INHINT
CCS NEWJOB # PROTECT READACCS GRP 5, IF SIDETRACKED.
TC CHANG1
SERVNOUT TC POSTJUMP # ( COME HERE FROM P67.3 )
CADR SERVEXIT # AND END AVERAGEG JOB VIA ENDOFJOB.
## Page 875
# DISPLAY WHEN V IS LESS THAN VQUIT.
STEEROFF EXIT
CA EBENTRY # PRECAUTIONARY.
TS EBANK
CA PRIO16 # 2 LESS THAN NTRYPRIO.
TC NOVAC
EBANK= AOG # ANY EB HERE
2CADR P67.1 # START UP REMAINDER OF P67
# RTOGO LAT LONG
# XXXX.X NM XXX.XX DEG XXX.XX DEG
TC 2PHSCHNG # INHINT/RELINT DONE.
OCT 00414 # 4.41 RESTART FOR P67.1 DISPLAY JOB.
OCT 10035 # SERVICER 5.3 RESTART.
CA P67.2CAD # HEREAFTER, DO LAT, LONG.
TS GOTOADDR
TC INTPRET
GOTO
P67.2CAD P67.2 # CONTINUE FOR LAT, LONG THIS TIME.
L357 DLOAD SIGN # L/D = L/DCMINR SIGN(L/D)
L/DCMINR
L/D
STCALL L/D1
L355 # (GO TO)
## Page 876
# TABLE USED FOR SUB-ORBITAL REFERENCE TRAJECTORY CONTROL.
VREFER DEC .019288 # REFERENCE VELOCITY SCALED V/51532.3946
DEC .040809 # 13 POINTS ARE STORED AS THE INDEPENDENT
DEC .076107 # VARIABLE AND THEN SIX 13 POINT FUNCTIONS
DEC .122156 # OF V ARE STORED CONSECUTIVELY
DEC .165546
DEC .196012
DEC .271945
DEC .309533
DEC .356222
DEC .404192
DEC .448067
DEC .456023
DEC .67918 # HIGHVELOCITY FOR SAFETY
DEC -.010337 # DRANGE/DA SCALED DRDA/(2700/805)
DEC -.016550
DEC -.026935
DEC -.042039
DEC -.058974
DEC -.070721
DEC -.098538
DEC -.107482
DEC -.147762
DEC -.193289
DEC -.602557
DEC -.99999
DEC -.99999
DEC -.0478599 B-3 # -DRANGE/DRDOT
DEC -.0683663 B-3 # SCALED ((2VS/8 2700) DR/DRDOT)
DEC -.1343468 B-3
DEC -.2759846 B-3
DEC -.4731437 B-3
DEC -.6472087 B-3
DEC -1.171693 B-3
DEC -1.466382 B-3
DEC -1.905171 B-3
DEC -2.547990 B-3
DEC -4.151220 B-3
DEC -5.813617 B-3
DEC -5.813617 B-3
## Page 877
DEC -.0134001 B3 # RDOTREF SCALED (8 RDT/2VS)
DEC -.013947 B3
DEC -.013462 B3
DEC -.011813 B3
DEC -.0095631 B3
DEC -.00806946 B3
DEC -.006828 B3
DEC -.00806946 B3
DEC -.0109791 B3
DEC -.0151498 B3
DEC -.0179817 B3
DEC -.0159061 B3
DEC -.0159061 B3
DEC .0008067 # RANGE TO GO SCALED RTOGO/2700
DEC .0032963 # 8.9
DEC .0081852 # 22.1
DEC .017148
DEC .027926
DEC .037
DEC .063298
DEC .077889
DEC .098815
DEC .127519
DEC .186963
DEC .238148
DEC .294185185
DEC -.051099 # -AREF/805
DEC -.074534
DEC -.101242
DEC -.116646
DEC -.122360
DEC -.127081
DEC -.147453
DEC -.155528
DEC -.149565
DEC -.118509
DEC -.034907
DEC -.007950
DEC -.007950
## Page 878
DEC .004491 # DRANGE/D L/D SCALED Y/2700
DEC .008081
DEC .016030
DEC .035815
DEC .069422
DEC .104519
DEC .122
DEC .172407
DEC .252852
DEC .363148
DEC .512963
DEC .558519
DEC .558519 # END OF STORED REFERENCE
## Page 879
# REENTRY CONSTANTS.
# DEFINED BY EQUALS
DEC15 = LOW4
#GAMMAL1 = 22D
MAXRNG 2OCT 1663106755 # DNRNGERR = 9999.9 IF GONEPAST=1
BANK 26
SETLOC REENTRY1
BANK
COUNT* $$/ENTRY
BARELY1 = NEARONE # COMMON TO BOTH DISK,DANCE.DEFND IN TFF
#1BITDP COMMON TO BOTH DISK AND DANCE. DEFND IN VECPOINT.
1/12TH DEC .083333 # DP 1/12 USES HI WORD IN 1/3 BELOW
1/3RD 2DEC .3333333333 # DP 1/3
1/16TH = DP2(-4)
# BELOW: VS = VSAT = 25766.1973 FT/SEC
# RE = 21,202,900 FEET
LEWD1 2DEC .15
POINT1 2DEC .1
POINT2 2DEC .2 # .2
DLEWD0 2DEC -.05 # -.05
GMAX/2 2DEC .16 # 8 GS / 2
3ZEROS EQUALS HI6ZEROS
NEAR1/4 2OCT 0777700000 # 1/4 LESS 1 BIT IN UPPER PART.
C18 2DEC .0097026346 # 500/2VS
Q7FKDMIN 2DEC .0080745342 # 6.5/805 (Q7F +KDMIN) = 6 + .5)
C1/16 = DP2(-4)
Q3 2DEC .167003132 # .07 2VS/21600
## Page 880
Q5 2DEC .326388889 # .3 23500/21600
Q6 2DEC .0349 # 2 DEG, APPROX 820/23500
Q7F 2DEC .0074534161 # 6/805 (VALUE OF Q7 IN FIXED MEM.)
Q19 = HALVE # Q19 = .5
Q21 2DEC .0231481481 # 500/21600
Q22 2DEC -.053333333 # -1152/21600
VLMIN 2DEC .34929485 # 18000/2 VS
VMIN = FOURTH # (VS/2) / 2VS
C12 2DEC .00684572901 # 32 28500/(21202900 2 PI)
1/KB1 2DEC .29411765 # 1 / 3.4
-1/KB2 2DEC -.0057074322 B4 # = -1/(.0034 2 VS) EXP +4
VQUIT 2DEC .019405269 # 1000 /2VS
C20 2DEC .21739130 # (175 FPSS) LIFT UP IF ABOVE C20
C21 2DEC .17391304 # 140/805
25NM 2DEC .0011574074 # 25/21600 (25 NAUT MILES)
K1D 2DEC .0314453125 # =C16 805/256 = .01 805/256
K2D 2DEC -.201298418 # -C17 2VS/256 = -.001 2VS/256
KVSCALE 2DEC .81491944 # 12800/(2 VS .3048)
KASCALE 2DEC .97657358 # 5.85 16384/(4 .3048 100 805)
KTETA 2DEC* .383495203 E2 B-14* # 1000 2PI/16384(163.84)
KT1 2DEC* .157788327 E2 B-14* # RE(2PI)/2 VS(16384) 163.84
.05G 2DEC .002 # .05/25
LATBIAS 2DEC .00003 # APPRX .5 NM/ 4(21600/2 PI)
KWE 2DEC .120056652 B-1
KACOS 2DEC .004973592 # 1/32(2PI)
CHOOK 2DEC 1 B-6 # .25/16
## Page 881
1/24TH 2DEC .0833333333 B-1
CH1 2DEC .32 B1 # 16 CH1/25 = 16 (1) /25
KC3 2DEC -.0247622232 # -(4 VS VS/ 2 PI 805 RE)
VRCONT 2DEC .0135836886 # 700/2 VSAT
HALVE EQUALS HIDPHALF
FOURTH EQUALS HIDP1/4
1/GMAX EQUALS HALVE # 4/GMAX = 4 / 8
2HS 2DEC .0172786611 # 2 28500 25 32.2/(4 VS VS)
2HSGMXSQ 2DEC .0000305717 # (2 28500 8 32.2/ 4 VS VS)SQ
C001 2DEC -.000625 # -(4/25)/256 LEQ/D0 CONST
POINT8 2DEC .8
2C1HS 2DEC .0215983264 # 2 1.25 28500 805/(2 VS)SQ
PT1/16 2DEC .1 B-4
1/K44 2DEC .00260929464 # 2 VS/19749550
VFINAL 2DEC .51618016 # 26600/2 VS
VFINAL1 2DEC .523942273 # = 27000 / 2 VS
1/KA1 2DEC .30048077 # 25/(1.3 64)
KA2 2DEC .008 # .2/25
KA3 2DEC .44720497 # = 90 4/805
KA4 2DEC .049689441 # 40/805
KALIM 2DEC .06 # 1.5/25
Q7MIN = KA4 # = 40/805 = .049689441
-HSCALED 2DEC -.55305018 # -28500/2 VS
-KSCALE 2DEC -.0312424837 # -805/VS
COS15 2DEC .965
LATSLOPE EQUALS 1/12TH
# ... END OF RE-ENTRY CONSTANTS ...
## Page 882
## Empty page.
Computing file changes ...
