Digital Apollo: Human and Machine in Spaceflight

by David A. Mindell

[back]

 

APPENDIX A
Selected Computer Programs
and Verb/Noun Codes

COMMAND MODULE COMPUTER PROGRAMS
Prelaunch and Service
00            CM Idling
01            Prelaunch Initialization
02            Gyro Compassing
03            Verify Gyro Compassing
06            CMC Power Down
07            IMU Ground Test
Boost
11            Earth Orbit Insertion (EOI) Monitor
17            Transfer Phase Initiation (TPI) Search
Navigation
20            Rendezvous Navigation
21            Ground Track Determination
22            Orbital Navigation
23            Cislunar Midcourse Navigation
27            CMC Update
Pre-thrusting
31            Lambert Aimpoint Maneuver
32            Co -Elliptic Sequence Initiation (CSI)
33            Constant Delta Alt. (CDH)
34            Transfer Phase Initiation (TPI)
35            Transfer Phase Midcourse (TPM)
37            Return to Earth (RTE)
38            Stable Orbit Rendezvous (SOR)
39            Stable Orbit Midcourse (SOM)
Thrusting
40            SPS
41            RCS
47            Thrust Monitor
IMU Alignment
51            IMU Orientation Determination
52            IMU Realign
53            Backup IMU Orientation Determination
54            Backup IMU Realign
Earth Entry
61            Maneuver To CM/SM Separation Attitude
62            CM/SM Separation & Pre-Entry Maneuver
63            Entry-Initialization
64            Entry-Post 0.05G
65            Entry-Up Control
66            Entry -Ballistic
67            Entry-Final Phase
Aborts and Backups
72            LM Co-Elliptic Sequence Initiation (CSI)
73            LM Constant Delta Alt (CDH)
74            LM TPI Targeting
75            LM TPM Targeting
76            Target AV
77            LM TPI Search
78            SOR Targeting
79            SOM Targeting

 

LUNAR MODULE GUIDANCE COMPUTER PROGRAMS
Prelaunch and Service
00            LGC Idling
06            PNGCS Power Down
Ascent
12            Powered Ascent Guidance
Navigation
20            Rendezvous Navigation
21            Ground Track Determination
22            Lunar Surface Navigation
25            Preferred Tracking Attitude
27            LGC Update
Pre-thrusting
30            External AV
31            Lambert Aim Point Maneuver
32            Co-Elliptic Sequence Initiation (CSI)
33            Constant Delta Altitude (CDH)
34            Transfer Phase Initiation (TPI)
35            Transfer Phase Midcourse (TPM)
38            Stable Orbit Rendezvous (SOR)
39            Stable Orbit Midcourse (SOM)
Thrusting
40            DPS
41            RCS
42            APS
47            Thrust Monitor
IMU Alignment
51            IMU Orientation Determination
52            IMU Realign
57            Lunar Surface Align
Lunar Descent
63            Braking Phase
64            Approach Phase
65            Landing Phase (Auto)
66            Landing Phase (ROD)
67            Landing Phase (Manual)
68            Landing Confirmation
Aborts and Backups
70            DPS Abort
71            APS Abort
72            CSM CSI Targeting
73            CSM CDH Targeting
74            CSM TPI Targeting
75            CSM TPM Targeting
76            Target AV
77            State vector update
78            CSM SOR Targeting
79            CSM SOM Targeting

 

(from Nevins, “Man-Machine Design,” 20)


AGC SELECTED VERBS AND NOUNS
(from Nevins, “Man-Machine Design,” 19)

Verbs in COLOSSUS (CSM)
06        Display decimal
16        Monitor decimal
21        Load into R1 (1st display line)
30        Request executive
31        Request waitlist
33        Proceed
34        Terminate
35        Test lights
37        Change program
41        Coarse align IMU
44        Set surface flag
46        Activate DAP
47        Set LM state vector into CSM state vector
57        Start rendezvous sighting
69        Restart
70        Update liftoff time
79        Start barbecue mode
89        Start rendezvous final attitude maneuver

 

Nouns in COLOSSUS (CSM)
09        Alarm codes
20        Gimbal angles
22        New gimbal angles
25        Checklist
32        Time to perigee
33        Time of ignition
35        Time to event
38        Time of state vector
43        Lat, long, altitude 
46        Autopilot configuration
47        Spacecraft inertias and weight
48        Engine trim
49        State vector update