diff --git a/Comanche055/TPI_SEARCH.agc b/Comanche055/TPI_SEARCH.agc index 7179558..6cd84bb 100644 --- a/Comanche055/TPI_SEARCH.agc +++ b/Comanche055/TPI_SEARCH.agc @@ -30,30 +30,27 @@ # Page 551 # TPI SEARCH -# + # PROGRAM DESCRIPTION S17.1 AND S17.2 -# + # FUNCTIONAL DESCRIPTION -# -# THE TPI SEARCH ROUTINE DETERMINES THE MINIMUM TOTAL VELOCITY TRANSFER TRAJECTORY FROM A GIVEN TPI + +# THE TPI SEARCH ROUTINE DETERMINES THE MINIMUM TOTAL VELOCITY TRANSFER TRAJECTORY FROM A GIVEN TPI # MANEUVER TIME WITHIN THE CONSTRAINT OF A SAFE PERICENTER. THIS VELOCITY IS THE SUM OF THE IMPULSIVE VELOCITIES # FOR THE TPI AND TPF MANEUVERS. -# -# THE S17.1 ROUTINE EXTRAPOLATES THE STATE VECTORS OF BOTH VEHICLES TO THE TPI TIME AND COMPUTES THE -# RELATIVE PHASE ANGLE BETWEEN THE VEHICLES, THE ALTITUDE DIFFERENCE (I.E., THE MAGNITUDE DIFFERENCE OF THE +# THE S17.1 ROUTINE EXTRAPOLATES THE STATE VECTORS OF BOTH VEHICLES TO THE TPI TIME AND COMPUTES THE +# RELATIVE PHASE ANGLE BETWEEN THE VEHICLES, THE ALTITUDE DIFFERENCE(I.E. THE MAGNITUDE DIFFERENCE OF THE # POSITION VECTORS) AND SELECTS A SEARCH SECTOR BASED ON THE SIGN OF THE ALTITUDE DIFFERENCE. -# -# THE S17.2 ROUTINE FURTHER DEFINES THE SEARCH SECTOR BY COMPUTING ANGULAR LIMITS AND USES THE TIME THETA +# THE S17.2 ROUTINE FURTHER DEFINES THE SEARCH SECTOR BY COMPUTING ANGULAR LIMITS AND USES THE TIME THETA # SUBROUTINE TO COMPUTE THE SEARCH START AND END TIMES. THE SEARCH IS THEN MADE IN AN ITERATIVE LOOP USING THE # LAMBERT SUBROUTINE TO COMPUTE THE VELOCITIES REQUIRED AT TPI TIME AND AT TPF TIME. EXIT FROM THE SEARCH LOOP # IS MADE WHEN SOLUTION CRITERIA ARE MET (NORMAL EXIT) OR AS SOON AS IT IS EVIDENT THAT NO SOLUTION EXISTS IN # THE SECTOR SEARCHED. -# + # CALLING SEQUENCE -# + # BOTH ROUTINES ARE CALLED IN INTERPRETIVE CODE AND RETURN VIA QPRET. S17.1 HAS ONLY A NORMAL EXIT. -# S17.2 RETURNS VIA QPRET FOR NORMAL EXIT AND TO ALARUMS FOR ERROR EXIT. -# +# S17.2 RETURNS VIA QPRET FOR NORMAL EXIT AND TO ALARUMS FOR ERROR EXIT. # SUBROUTINES CALLED # # CSMCONIC @@ -69,11 +66,11 @@ EBANK= RACT3 -# **** TEMPORARY **** +# **** TEMPORARY **** HPE 2DEC 157420.0 B-29 # EARTH'S MIN. PERICENTER ALTITUDE 85 N.M. -HPL 2DEC 10668.0213 B-29 # MOON'S MIN. PERICENTER ALTITUDE 35000 FT. +HPL 2DEC 10668.0213 B-29 # MOON:S MIN. PERICENTER ALTITUDE 35000FT CDSEC 2DEC 40000 @@ -301,7 +298,7 @@ JUNCT3 VLOAD SL* 0,2 STORE HP -# ITSWICH DENOTES INTERPOLATION -- SOLUTION ACCEPTANCE IS FORCED +# ITSWICH DENOTES INTERPOLATION--SOLUTION ACCEPTANCE IS FORCED BON DLOAD ITSWICH ENDEN @@ -315,9 +312,9 @@ JUNCT3 VLOAD BMN DSU # (HPLIM-HPO)-(HPLIM-HP)=HP-HPO INTERP # SOLUTION AT HAND BMN DLOAD - ALARUMS # IT'S GETTING WORSE -- SOUND THE ALARM + ALARUMS # IT'S GETTING WORSE - SOUND THE ALARM CDSEC -JUNCT1 BOFF DCOMP # OFF IS PLUS, ON IS MINUS +JUNCT1 BOFF DCOMP # OFF IS PLUS ON IS MINUS KFLAG +1 STORE DELTEE @@ -386,7 +383,7 @@ ENDEN VLOAD RELDELV SIGN STADR # NOW SIGN(RELDELV)=SIGN(SG2) STCALL RELDELV - TRANSANG # COMPUTE OMEGA T, CENTRAL ANGLE + TRANSANG # COMPUTE OMEGA T , CENTRAL ANGLE VLOAD DOT RACT3 # Page 558 @@ -417,8 +414,7 @@ NEXUS STODL NN1 COUNT 07/XANG # CENTRAL ANGLE SUBROUTINE -# -# THIS SUBROUTINE COMPUTES THE CENTRAL ANGLE OF TRAVEL OF THE +# THIS SUBROUTINE COMPUTES THE CENTRAL ANGLE OF TRAVEL OF THE # PASSIVE VEHICLE DURING THE TRANSFER. TRANSANG STQ SETPD @@ -435,9 +431,9 @@ TRANSANG STQ SETPD PDVL VSR* # SQRT MU (+18 OR +15) 00D RPASS4 0,2 - ABVAL PDDL* # MAGNITUDE OF R (+29 OR +27) 02D + ABVAL PDDL* # MAGNITUDE OF R (+29 OR +27) 02D MUTABLE,1 - PDVL VSQ # 1/MU (+34 OR +28) 04D + PDVL VSQ # 1/MU (+34 OR +28) 04D VVEC NORM DMPR # PUSH LIST AT 02D X1 @@ -445,12 +441,12 @@ TRANSANG STQ SETPD DMP SRR* 02D 0 -3,1 - BDSU # R V**/MU (+6) + BDSU # R V**/MU (+6) D1/32 NORM PDDL X1 # (2 - R V**/MU) (+6-N) SR1R DDV # MAGNITUDE OF R (+30 OR +28) - SL* PUSH # R/(2 - R V**/MU) (+29 OR +27) 02D + SL* PUSH # R/(2 - R V**/MU) (+29 OR +27)02D 0 -5,1 SR1 SQRT DMP @@ -475,9 +471,9 @@ TRANSANG STQ SETPD # TPI SEARCH DISPLAY ROUTNE -P17 TC AVFLAGA # AVFLAG = CSM, SET TRACK + UPDATE FLAGS +P17 TC AVFLAGA # AVFLAG = CSM , SET TRACK + UPDATE FLAGS TC P17.1 -P77 TC AVFLAGP # AVFLAG = LEM, SET TRACK + UPDATE FLAGS +P77 TC AVFLAGP # AVFLAG = LEM , SET TRACK + UPDATE FLAGS P17.1 TC P20FLGON # SET UPDATE FLAG CAF V06N37 # DISPLAY TTPI TIME TC VNP00H @@ -487,15 +483,15 @@ P17.1 TC P20FLGON # SET UPDATE FLAG S17.1 # UPDATE STATE VECTORS TO TTPI SET AXT,1 UPDATFLG - DEC 2 # DELTA H = 2 K POSITIVE, KFLAG OFF + DEC 2 # DELTA H = 2 K POSITIVE , KFLAG OFF BOFF AXT,1 KFLAG +2 - DEC 1 # DELTA H = 1 K NEGATIVE, KFLAG ON + DEC 1 # DELTA H = 1 K NEGATIVE , KFLAG ON # Page 560 SXA,1 EXIT OPTION2 - CAF V06N72 # DISPLAY PHI, DELTA H, SEARCH OPTION K + CAF V06N72 # DISPLAY PHI , DELTA H , SEARCH OPTION K TC VNCOMP17 TC INTPRET CLEAR SET @@ -519,9 +515,9 @@ P17.2 STCALL HPERMIN S17.2 SET EXIT UPDATFLG -P17.3 CAF V06N58 # DISPLAY DELTA VTPI, DELTA VTPF, AND H +P17.3 CAF V06N58 # DISPLAY DELTA VTPI , DELTA VTPF , AND H TC VNCOMP17 - CAF V06N55 # DISPLAY PERICENTER CODE AND CENTRAL ANG, + CAF V06N55 # DISPLAY PERICENTER CODE AND CENTRAL ANG. TC BANKCALL CADR GOFLASHR TC GOTOP00H # TERMINATE PROGRAM @@ -554,4 +550,3 @@ ALARUMS SET EXIT TC VNCOMP17 TC GOTOP00H # PROCEED ILLEGAL TERMINATE PROGRAM V06N72 VN 0672 -