Various presentations presented at the MAPLD '04 conference, by
AGC developers and other knowledgeable folks
This section pertains to a document (E-2448) called "Users' Guide to Apollo GN&CS Major Modes and Routines", presented in several different revisions. While the document itself purports to be general purpose in nature rather than mission-specific, it was nevertheless maintained to remain current, and therefore can be roughly matched (from publication dates and internal information) particularly-relevant missions.
Other sources referencing the erasable loads include:
TBD
The principal references for AGC electrical schematics and
mechanical drawings on this website are now the following two
pages:
See also: System Handbooks and
the other AC/Delco documents in the
"Miscellaneous" section below.
"Published to inform members of the technical staff at MIT and
Raytheon about the AGC and the Apollo G & N system",
apparently with emphasis on the electronics.
A dozen or so of the memos in this section were duplicated
elsewhere in library, long before I recognized "Apollo project
memoranda" as being a distinct document category. Oops, my
mistake! On the other hand, you'll notice that the numbering
of the memos is what you might call "distinctively different";
don't blame me for that, I'm just the messenger. Perhaps the
numbering scheme was too boring, and so they changed it every
year. Besides that, some of the memos are self-described as
"Apollo Project Memoranda", while others describe themselves as
"Apollo Engineering Memoranda" though assigning themselves an
"AP-M" memo number; perhaps this was an evolution in the naming
over time, or perhaps I'm still intermixing two or more separate
categories of memos. At this point, it's just a guess, I'm
afraid. At any rate, I've organized the memos by date rather
than by memo number.
These memos primarily relate to the electrical design of the AGC.
Also, here are a
couple of Electronic Design Group Memoranda, which I throw in as a
bonus:
These are notes from AC Spark Plug Division, commenting on topics
peripheral to the AGC, such as ground-support equipment.
The "LUMINARY Memos" are memos from the MIT Instrumentation Lab dealing with issues of Luminary software development.
Of particular interest, if you're concerned with the evolution of the AGC software, are the many memos, software-anomaly reports, program-change requests (PCRs), and program-change notices (PCNs) used to document the changes of the Luminary code from one revision to the next. In theory, if you had all of them, you could use them to document the complete evolution of Luminary, or at any rate from LUMINARY 4 (memo #22) through LUMINARY 209 (memo #205).
But back to the memos. There are over 250 known LUMINARY Memos, of which we've gotten the majority from Don Eyles's personal collection. Here at the Virtual AGC site we are providing these memos in a convenient, readable quality, but higher-quality archival versions for many of them are available in our Virtual AGC collection at the Internet Archive. In the table below, the lines which are grayed-out relate to memos about which we have some information but not the actual memos themselves.
LUMINARY Memo #
Date
Author
Subject
1
11/07/67
J. Rhode
2
11/15/67
Steve Copps
Tiger Team
3
11/13/67
George Cherry
Minutes of MSC LM Digital Autopilot Design Review
4
11/29/67
George Cherry
5
11/27/67
J. Saponaro
Synchronization of W-Matix and State Vector
6
01/12/68
George Cherry
7
01/16/68
George Cherry
LUMINARY GSOP Chapter 5 and Chapter 4 Review
8
01/24/68
John Vella
Recent Changes to PINBALL Affecting DSKY Operation
9
02/06/68
A. Martorano
Minutes of PRC Meeting 2 February 1968
10
02/09/68
George Cherry
RCS Jet Firings During Gyro Torquing in P52 on SUNDANCE
11
02/12/68
J. S. Miller
Inhibition of DAP Operation in SUNDANCE and LUMINARY
12
02/13/68
S. Davis
Hybrid Facility Procedures
13
02/26/68
George Cherry
Deadband Setting PCR #86
14
03/04/68
Alex Kosmala
Key Release Light
15
03/08/68
N. Neville
SETUP504
16
03/14/68
Alex Kosmala
ABORT
17
03/15/68
J. Saponaro
AGC Time Dependent Constants
18
03/??/68
R. Tinkham
LUMINARY Downlist
19
03/04/68
Allan Klumpp
20
04/01/68
Jim Kernan
SUNDANCE Revisions 280, 281 and 282 and LUMINARY Revision 0
21
04/08/68
Craig Schulenberg
LUMINARY Revisions 1, 2 and 3
22
04/15/68
Craig Schulenberg
23
04/22/68
Craig Schulenberg
24
04/24/68
C. Braunhardt
25
04/30/68
Craig Schulenberg
26
05/13/68
Don Eyles
27
05/10/68
Allan Klumpp
27 rev 1
09/26/68
Allan Klumpp
FINDCDUW Guidance Autopiliot Interface Routine 28
05/14/68
Craig Schulenberg
29
06/06/68
Craig Schulenberg
30
06/07/68
Jim Kernan & Schulenberg
31
06/12/68
Craig Schulenberg
32
06/24/68
Peter Weissman
33
06/24/68
George Cherry
34
07/15/68
Craig Schulenberg
35
07/30/68
George Cherry
36
07/30/68
George Cherry
Computing the Lag Angles which Prevent Beginning and Supervised DAP Maneuvers
37
08/05/68
Craig Schulenberg
LUMINARY Revisions 35 - 38
38
08/06/68
Craig Work
Restrictions to R03 (Verb 48) Inputs
39
08/27/68
George Cherry
Scheduling Proposed Modifications to the LUMINARY Digital Autopilot
40
09/05/68
Craig Schulenberg
41
08/28/68
A. Laats & J. Shillingford
LUMINARY Level 3 Verification Plan
42
09/12/68
George Cherry
43
09/16/68
George Cherry
44
09/19/68
Don Eyles
45
09/24/68
Don Eyles
46
10/15/68
George Cherry
LUMINARY Level IV Test Data Requirements for Pre-FACI Review
47
10/29/68
George Cherry
48
10/24/68
J. Connor
49
11/01/68
Craig Schulenberg
50
11/02/68
Craig Schulenberg
51
11/02/68
Craig Schulenberg
52
11/03/68
Craig Schulenberg
53
11/12/68
George Cherry
54
11/18/68
George Cherry
55
12/04/68
Craig Schulenberg
56
12/04/68
George Cherry
57
12/09/68
George Cherry
58
12/17/68
Craig Schulenberg
59
01/03/69
Craig Work
SUNDANCE Edits for DAP and for Powered Descent
60
01/09/69
Jim Kernan, Peter Volante
61
01/14/69
Craig Schulenberg
62
01/24/69
George Cherry
63
01/27/69
George Cherry
A Derivation of the Improved Lunar Landing Guidance Equations
64
02/04/69
Jim Kernan
65
02/07/69
George Cherry
66
02/12/69
George Cherry
Aborts from the Lunar Landing & Nominal Lunar Ascent Targetting
67
02/17/69
Craig Schulenberg
68
02/20/69
George Cherry
69
03/10/69
Craig Work
70
03/13/69
Joe Saponaro
Accuracy of Verb 83 (Range, Range Rate, Theta Display)
71
03/14/69
Peter Volante
72
Bill Ostanek
Use of V96 During State Vector / W Matrix Synchronization
73
03/27/69
Craig Schulenberg
74
03/31/69
Peter Adler
75
04/01/69
George Cherry
76
04/01/69
Don Eyles
77
04/03/69
George Cherry
78
04/10/69
Craig Schulenberg
79
04/15/69
Jane Goode
Computation Cycle Timing in TPI, TPM Programs
80
04/24/69
Don Eyles
81
04/28/69
Don Eyles
82
05/08/69
J.E. Jones
83
05/19/69
Jim Kernan
84
05/21/69
Don Eyles
85
05/21/69
Jim Kernan
86
05/21/69
Eugene Muller, Peter Kachmar
Affect of Radar (or the HF Ranging) AGC Interface Problem on F Mission Rendezvous Sequence
87
05/28/69
George Cherry
George Lowe's Decision at CCB Regarding LGC Radar Interface Problem
88
06/05/69
Don Eyles
89
06/23/69
Peter Adler, Dana Densmore
90 rev 1
06/11/70
Jenny Flaherty
91
07/07/69
Craig Schulenberg
92
07/10/69
Craig Schulenberg
93
07/14/69
J.E. Jones
94
07/14/69
Bruce McCoy
95
07/09/69
Robert Covelli
96
07/14/69
Bruce McCoy
97
07/16/69
Don Eyles
98
07/22/69
Margaret Hamilton
Review of Reduction of Coding Approval Procedures
99
07/23/69
George Cherry
100
07/31/69
Craig Schulenberg
101
08/04/69
Bruce McCoy, George Cherry
102
08/06/69
George Cherry
Some Results of the Apollo 12 Pinpoint Lunar Landing Data Priority Meeting
103
08/06/69
Craig Schulenberg
104
08/08/69
David Moore, Don Eyles
105
08/14/69
Al Engel, Bruce McCoy
H Mission RTCC Compatibility Testing, Test Plan & Schedule (Preliminary)
106
08/14/69
Al Engel, Bruce McCoy
RTCC Compatibility Testing at MIT, Current Understanding of Scope, Responsibilities, etc.
107
08/20/69
Craig Schulenberg
108
08/22/69
Bruce McCoy
109
09/09/69
Bruce McCoy
110
09/10/69
Bill Ostanek
111
09/19/69
Bruce McCoy
112
09/22/69
M. Albert
113
10/02/69
S. David
Configuration Control of RTCC Digital Environment
114
10/07/69
Russ Larson
115
10/09/69
Don Eyles
116
10/22/69
Larry Berman
117
10/24/69
George Kalan
Special Crew Procedures Necessary for Controlling the CSM-Docked Configuration with the LEM DAP
118
10/27/69
Don Eyles
119
10/30/69
Harry McOuat
120
11/05/69
Russ Larson
121
11/05/69
Bruce McCoy
122
11/06/69
Dana Densmore
123
11/18/69
Don Eyles
124
11/11/69
Dana Densmore
125
11/21/69
Donald S. Reinke
126
12/02/69
Don Eyles
127
12/03/69
Bruce McCoy
128
12/03/69
Bruce McCoy
129
12/05/69
Dana Densmore
130
12/15/69
Russ Larson
131
01/02/70
Dana Densmore
132
01/08/70
Ken Greene
133
01/09/70
Peter Volante, G. Dunbar
133 rev 1
05/04/70
Peter Volante, G. Dunbar
Implementation of PCR 287 134
01/19/70
Dana Densmore
135
01/23/70
Robert Covelli
Downrupt Losses During Periods of High Computer Activity Programs
136
01/29/70
Dana Densmore
137
01/30/70
Russ Larson
138
02/14/70
Don Eyles
138 rev 1
03/06/70
Don Eyles Variable Guidance Period Servicer 139
03/03/70
Don Eyles
140
03/04/70
Allan Klumpp
141
03/10/70
Larry Berman
Replacement of LOGSUB in LUMINARY from Don Eyles's collection or from Russ Larson
142
03/18/70
Dana Densmore
143
03/24/70
Allan Klumpp
144
04/06/70
Don Eyles
145
05/05/70
Dana Densmore
146
05/??/70
Robert Covelli
The New R12
147
05/05/70
Allan Klumpp, Don Eyles, Bruce McCoy
148
05/11/70
Bruce McCoy
Call It LUMINARY 1D from Don Eyles's collection or from Russ Larson
149
05/13/70
Don Eyles
150
05/15/70
Dana Densmore
151
05/19/70
Dana Densmore
152
05/21/70
Don Eyles
153
05/26/70
Sharon Albert
154
06/01/70
Larry Berman
155
06/01/70
Bruce McCoy
LUMINARY 1D Re-Release from Don Eyles's collection or from Russ Larson
156
06/09/70
Dana Densmore
157
06/10/70
Dana Densmore
158
06/18/70
Bruce McCoy, Dana Densmore
159
07/10/70
Russ Larson
160
07/16/70
David Moore
161
07/17/70
Don Eyles
162
07/20/70
Don Eyles
163
07/21/70
Don Eyles
164
07/22/70
Phyllis Rye, Peter Peck
165
07/28/70
Don Eyles
166
07/23/70
David Moore
167
08/17/70
Bruce McCoy, Phyllis Rye
Luminary 1D: Which One, What Kind, How Many? from Don Eyles's collection or from Russ Larson
167 rev 1
09/17/70
Bruce McCoy, Phyllis Rye
168
08/18/70
Robert Covelli
169
09/01/70
Harry McOuat
170
09/15/70
Bruce McCoy
171
09/16/70
Don Eyles
172
10/11/70
Dana Densmore
173
10/12/70
Dana Densmore
174
10/09/70
Bill Robertson
175
10/13/70
Dana Densmore
176
10/14/70
Dana Densmore
177
10/22/70
Don Eyles
178
10/20/70
Peter Weissman
179
10/27/70
Dana Densmore
180 rev 1
12/15/70
David Moore
181
12/15/70
Don Millard
182
12/08/70
Dana Densmore
183
12/09/70
Dana Densmore
184
12/15/70
Dana Densmore
185
12/17/70
Dana Densmore
186
12/22/70
David Moore
187
12/18/70
Dana Densmore
188
12/20/70
Dana Densmore
189
12/28/70
Dana Densmore
190
12/29/70
Dana Densmore
191
01/04/71
Harry McOuat
Fixed memory hardware related constants in Luminary 1D or here
192
01/05/71
Dana Densmore
193
01/08/71
Dana Densmore
194
01/22/71
Allan Klumpp
195
01/11/71
Dana Densmore
196
01/13/71
Dana Densmore
197
01/15/71
Dana Densmore
198
01/29/71
Craig Work, Peter Weissman
199
02/12/71
David Moore
P99 — Erasable Memory Program for a Guided RCS Burn — Luminary 1E
200
02/22/71
V. Dunbar, Peter Volante
Implementation and Testing of PCR 324, PGNCS/AGS RR Data Transfer
201
02/16/71
Dana Densmore
DOWNRUPT SEQUENCING, LOST DOWNRUPTS, AND IMPAIRED DOWNLINK INFORMATION
202
02/16/71
Dana Densmore
203
02/23/71
Craig Work, Peter Weissman
204
02/24/71
Dana Densmore
205
02/26/71
Dana Densmore
206
03/09/71
Peter Weissman
207
03/17/71
David Moore
208
03/16/71
Allan Klumpp
209
03/23/71
Peter Weissman
Update to Luminary Memo 178, "Inputs to LM DAP During Descent and Ascent"
210
03/23/71
Peter Volante, Bill Ostanek
211 rev 1
04/28/71
David Moore
"Erasable Memory Program" for a guided RCS burn (for Luminary 1E). See also: "Comments on LM P99 Information in Luminary Memo #211"
212
03/29/71
Larry Berman
213
03/31/71
Craig Work
214 rev 1
04/06/71
Luminary Test Group
215
04/20/71
William Robertson
Limitations in the Astrodynamic Orientation and Ephemeris Routines
216
04/23/71
Craig Schulenberg, Peter Weissman
Impact of PCR 1107 (Abort Bit Backup) on Apollo 15 Abort Procedures
217
05/06/71
Russ Larson
218
05/19/71
David Moore
219
05/26/71
Craig Schulenberg
220
06/04/71
Craig Schulenberg
Erasable Memory Program for LUMINARY Rev. 210 to Provide Backup for DSKY Keys
221
07/12/71
Craig Work
222
06/15/71
Luminary Test Group
223
06/17/71
Craig Schulenberg
224
06/22/71
Craig Schulenberg, Phyllis Rye
Revision 1 of Erasable Memory Program for Backup for DSKY Keys
225
07/08/71
Peter Volante
227
07/13/71
Luminary Test Group
Level 6 Test of DSKY Keystroke Backup Erasable Progeram for LUMINARY 1E
228
07/21/71
David Moore, Peter Volante
Using P99 LM Deorbit Erasable Program in Earth Orbit (with full DPS/APS configuration)
229
07/15/71
David Moore, Craig Work, Peter Weissman
230
09/10/71
Larry Berman
231
11/08/71
Don Millard
232
11/16/71
Don Eyles
233
11/23/71
Margaret Hamilton
234
11/30/71
Bruce McCoy, Don Millard
235 rev 1
02/22/72
Don Eyles
236
12/23/71
Larry Berman
Crew Corrections for Cross Range Error due to Uncompensated Orbit Precession
239
02/22/72
Don Eyles
240
03/02/72
Luminary Test Group
244
04/18/72
Don Eyles
247
09/01/72
Don Millard
250
10/20/72
Luminary Test Group
252
11/20/72
Don Eyles
339
04/14/72 Don Eyles Latest EMP 103B
Date |
Originator |
Designation |
Program |
Description |
---|---|---|---|---|
06/11/68 |
Bennett |
PCR-210 |
Effective Luminary |
Increase DPS Throttle Recovery Limit |
06/19/68 |
Eyles, Cherry |
PCR-470 |
Effective Luminary |
P68 |
07/15/68 |
G. W. Cherry |
PCR-497 |
Effective Luminary |
Do Not Delay P63 Throttle-Up Time |
08/22/68 |
J. B. Hill |
LNY-14 |
Luminary 40 |
RTCC uplink load for P31 ... TPASS4 should
replace DELLT4 as part of the uplink load or P31 logic
should be modified. |
09/03/68 |
R. F. Stengel |
PCR-551 |
Effective Luminary |
Rotational Hand Controller Scaling |
09/19/68 |
Don Hughes |
LNY-8 |
Luminary 42 |
After throttle recovery in P63 ... Attempts
to enter P00 and P37 via V37 gave OPR ERR light ... |
09/20/68 |
P. C. Smith |
LNY-15 |
Luminary 43 |
The P63 ignition-time computation loop
calculates a new Δtig ... After exit, the updated time is
mismatched ... |
10/01/68 |
P. C. Smith |
LNY-16 |
Luminary 43 |
In listing of "TTFINCR," TTF/8TMP is
incremented incorrectly ... |
10/01/68 |
J. Glassman |
LNY-6 |
Luminary 47 |
After the DSKY reset button was depressed ...
Program alarm 1501 ensued which indicates an abort
situation. OPR ERR light did not flash ... |
10/02/68 |
P. C. Smith |
LNY-17 |
Luminary 50 |
Constants PROJMAX and PROJMIN should be
scaled to agree with PROJ ... |
10/07/68 |
J. Glassman |
LNY-9 |
Luminary 51 |
DSKY entry V11N10E ee111E resulted in OPR ERR
lamp flash ... |
10/22/68 |
D. A. Pettit |
LNY-12 |
Luminary 51 |
When the V97NXX is flashing from the engine
fail routine (R40), a short duration verb 06 flash appeared
intermittently. |
11/08/68 |
Robert Force |
LNY-19 |
Luminary 40 |
After performing P4X with P20 running ... can
only be rectified by terminating P20 ... |
11/27/68 |
Adler, Eyles |
PCR-650 |
Effective Luminary II |
Variable Guidance Period |
12/12/68 |
Adler, Eyles |
LNY-25 |
Luminary 69 |
If P63 is terminated before SERVICER is
turned on at TIG-30 seconds, any subsequent selection of
P40, P41, P42, or P47 will use an incorrect AVERAGE-G ... |
01/07/69 |
D. Millard |
LNY-28 |
Luminary 69 |
A restart during R50 (coarse align) will
result in a REFSMMAT that does not reflect IMU orientation
within coarse alignment accuracy. |
01/08/69 |
Vella |
LNY-26 |
Luminary 69 |
After an illegal monitor verb-noun is
executed the LGC verb register is left containing a display
verb rather than ... |
01/09/69 |
A. Klumpp |
PCR-688 |
Effective Luminary 1A |
Guidance Frame Erection Check |
01/14/69 |
R. Covelli |
LNY-27 |
Luminary 69 |
The landing radar velocity update is scaled
at twice the scaling it should be. |
01/15/69 |
G. Cherry |
PCR-700 |
Effective Luminary 1A |
Improve the Rate-of-descent Mode (P66)
Performance |
01/20/69 |
J. Kernan |
LNY-29 |
Luminary 69 |
The scaling of the computations in P32 and
the APSIDES routine causes values of e < .000488 to be
treated as 0.... |
01/20/69 |
R. Covelli |
LNY-30 |
Luminary 69 |
A restart in P63 can cause a case where
VSELECT will not be properly initialized. |
01/20/69 |
J. Kernan |
LNY-31 or
here |
Luminary 69 |
Request Executive (V30) and Request Waitlist
(V31), which require loading Noun 26, should not be used
with programs which share the N26 erasables, ... |
01/23/69 |
Allan Klumpp |
LNY-32 |
Luminary 69 |
... The consequence of erecting the guidance
coordinate frame (GCF) backward (rotated 180 degrees about
the vertical) is that the LM turns upside down and
crashes.... |
01/28/69 |
C. Schulenberg |
LNY-33 |
Luminary 69 |
The two quantities V2FG and TAUg are indicated to be pad-loaded erasables ... In LUMINARY Rev 69, however, these quantities are in fixed memory. |
01/29/69 |
C. Schulenberg |
LNY-34 |
Luminary 69 |
The quantity TGOAUG is indicated to be a
pad-loaded erasable ... In Rev. 69 of LUMINARY, however,
this quantity is in fixed memory.... |
01/30/69 |
N. Barnert |
LNY-35 |
Luminary 69 |
V83 gives incorrect results at small ranges. |
01/31/69 |
P. Adler |
LNY-36 |
Luminary 69 |
Overflow occurred during LOS calculation in
R29DODES. |
02/04/69 |
G. Cherry |
PCR-731 |
Effective Luminary 1A |
Modify the Lunar Landing Guidance Equations
to Compensate for Computation, Throttle, FINDCDUW, &
Attitude Control Lags |
02/05/69 |
P. Volante |
LNY-37 |
Luminary 69 |
A V32E response to the V16N80 display in the
R24 search routine during P22 results in R2 not being
updated ... |
02/17/69 |
C. Schulenberg |
LNY-38 |
Luminary 69 |
Failure of POODOO routine to set superbank
bits. |
02/17/69 |
George W. Cherry |
PCR-737 |
Effective Luminary 1A |
Permit ATT HOLD Mode In P63, 64, 65 |
02/20/69 |
P. Volante |
LNY-39 |
Luminary 69 |
In R21 the K=60 Counter is set before antenna
prepositioning to the mode center, and the RR self track
enable is removed after the prepositioning. The order
of these must be reversed ... |
03/04/69 |
R. Covelli |
LNY-42 |
Luminary 69 |
IMU Alignment on the lunar surface does not
zero pipas before coars align.... |
03/05/69 |
R. Covelli |
LNY-40 |
Luminary 69 |
Verb 68, which is supposed to cause an
immediate switch from P63 to P64, does not function properly
... |
03/05/69 |
R. Covelli |
LNY-41 |
Luminary 69 |
IMU compensation on the lunar surface does
not initialize the low order part of DELV ... |
03/11/69 |
J. Kernan |
LNY-58 or
here |
Luminary 69 & 96 |
It is possible to enter a program (V40N72,
V41N72, V60, V63, V78) which uses the RR or LR while R12 is
reading the LR.... |
03/12/69 |
Robert Force |
LNY-44 |
Luminary 69 |
Program alarm 1201 occurs following bypass of
P41 maneuver to the F mission rendezvous plane change
thrusting attitude.... |
03/17/69 |
D. Eyles |
LNY-46 |
Luminary 69 |
DEPRCRIT, the depression angle criterion in
the P64 redesignation logic, is incorrectly scaled.... |
03/18/69 |
W. Ostanek |
LNY-47 |
(Canceled) |
Permanent integration of state vectors
without W-matrix integration is not restart proof.... |
03/18/69 |
P. Volante |
LNY-48 |
Luminary 69 |
In P20 Rendezvous Navigation (or P22) the
range greater than 400 n.m. alarm (526) may not be triggered
when the range is between 566 and 980 n.m. |
03/21/69 |
L. Berman |
LNY-49 |
Luminary 69 |
For early aborts ... For yaw, the overflow is
caused by a SL2 ... |
03/21/69 |
A. Klumpp |
LNY-50 |
Luminary 69 |
During the lunar landing ... corrected range
could be displayed as late as 4 secs. after site
redesignation. |
03/24/69 |
A. Klumpp |
PCR-756 |
Effective Luminary 1A |
Guidance Frame Erection Trajectory Shaping
Factors |
03/26/69 |
R. A. Harwood |
LNY-45 or
here |
Luminary 69 |
An error due to truncation in the computation
of engine cutoff time during long burns can cause burn
residuals of up to 0.64 fps.... |
03/26/69 |
D. A. Pettit |
LNY-51 or
here |
Luminary 69 |
When P20 is exited by means of V56, and no
other program is running concurrently, the major mode
display on the DSKY goes blank.... |
(Undated) |
D. Millard |
LNY-52 |
Luminary 69 |
Inconsistent pipa sampling time between
program and GSOP in gravity vector determination routine in
P57. |
03/26/69 |
P. Volante |
LNY-53 |
Luminary 69 |
In R22 the call to R65 from the Navigation
subroutine (LSR22.3) is made only when the W-matrix is
initialized. |
03/26/69 |
G. W. Cherry |
LNY-54 |
Luminary 69 |
1301 Alarm (argument of ARCCOS function too
large) occurs in R65 ... |
03/27/69 |
J. M. Reber |
LNY-55 or
here |
Luminary 1A |
Errors in LUMINARY 1A and COLOSSUS 2A fixed
constants ... |
04/04/69 |
P. Volante |
LNY-56 |
Luminary 93 |
A V41 N72 RR continuous designate which
follows an unsuccessful RR search (R24) will not designate
to the desired angles. |
04/09/69 |
J. Kernan |
LNY-43 rev
1 |
Luminary 69 |
If a POODOO program alarm ... occurs during
permanent state vector integration, STATEFLG and the
NODOFLAG may remain set ... |
04/09/69 |
P. Adler |
LNY-57 |
Luminary 69 |
Strange behavior is possible following
responses to V99 or V97. |
04/14/69 |
C. Schulenberg |
LNY-60 |
Luminary 69 |
The constant labeled (APO) in P12 should
correspond to 55,560 meters instead of the current 55,597.5
meters.... |
04/15/69 |
J. Kernan |
LNY-59 or
here |
Luminary 96 |
Two of the Ephemeris Constants recently
changed (PCN 707.2) are incorrect.... |
04/21/69 |
R. Simpson |
LNY-84 |
Luminary 97 |
While performing the G-Mission DOI, a check of the predicted ha and hp ... showed a wide variance ... |
04/24/69 |
P. Volante |
LNY-61 or
here |
Luminary 69 through 97 |
If a Restart (Hardware or Software) occurs
during the Trunnion or Shaft incorporations of P20
Rendezvous Navigation (or P22), an incorrect State Vector
Update can occur. |
04/28/69 |
C. Schulenberg |
LNY-62 |
Luminary 69 & 97 |
If P70 is selected at a point late enough in
the landing ... |
04/28/69 |
C. Schulenberg |
LNY-63 |
Luminary 97 |
If the DPS engine fails to ignite in P40 or
if the DPS fails in P40 prior to the time throttle-up was to
occur ... |
04/28/69 |
C. Schulenberg |
LNY-64 |
Luminary 97 |
If a restart occurs in P63 between the
nominal ignition time and the time of FTP, the LGC will fail
to throttle the DPS ... |
05/05/69 |
R. Simpson |
LNY-85 |
Luminary 97 |
During a PGNS controlled powered descent test
run from PDI, a restart an a 1107 alarm code occurred at TIG
... |
05/12/69 |
P. Adler |
LNY-65 |
Luminary 97 |
In both targeting and burn programs, the
LAMBERT subroutine can ... tie up the computer for an
indefinite, possibly unbounded, time. |
05/13/69 |
J. Kernan |
LNY-66 or
here |
Luminary 69 & 98 |
Indeterminate Program behavior occurs when
R04 or R77 is run simultaneously with P25 |
05/13/69 |
J. Kernan |
LNY-67 or
here |
Luminary 69 & 98 |
The GSOP indicates that program alarm 1210 is
a Bailout. However, if two programs call KALCMANU, the
1210 program alarm is a P00D00. |
05/13/69 |
D. Millard |
LNY-68 or
here |
Luminary 69 & 98 |
In P57, if gyro torquing is attempted (a
Proceed on V06N93) while the IMU compensation routines are
torquing gyros, a 1210 program alarm will occur. |
05/14/69 |
R. D. Gross |
LNY-69 or
here |
Luminary 97 |
A spurious commanded firing of a downward
forcing RCS jet in powered ascent. |
05/20/69 |
P. Volante |
LNY-71 or
here |
Luminary 99 |
In P22 Lunar Surface Navigation, the RR
pre-designate routine stores into an erasable used by
orbital integration (precision integration only). |
05/20/69 |
G. W. Cherry |
LNY-72 |
Luminary 97 & 99 |
If the LGC does not receive indication of the
antenna's reaching position 2 in the antenna re-positioning
routine, this routine displays priority alarm 523.... |
05/20/69 |
P. Adler |
LNY-73 |
Luminary 97 & 99 |
If response to V06N61 (P63) is V32E (Recycle)
control will be passed to the engine fail routine as if
there had been an "enter" response to a V97Nxx.... |
05/20/69 |
D. Millard |
LNY-74 or
here |
Luminary 99 |
In P57 a bad alignment will result in ... |
05/20/69 |
P. Volante |
LNY-75 or
here |
Luminary 69 & 99 |
In the radar self-test routine, R04, a
proceed response to the V16N78 display can result in
sampling the rendezvous radar again ... |
05/26/69 |
Densmore |
L-(unnumbered) |
(Canceled) |
Turn on operator error light and exit if
SURFFLAG is set when V66 is selected. |
05/26/69 |
D. Eyles |
L-2 |
Luminary 1B |
Remove guidance phase switching logic from
guidance loop called in the landing ignition algorithm. |
05/28/69 |
J. Kernan |
PCR-806.2 |
Effective Luminary 1B |
Allow N07 to address output channels. |
06/02/69 |
G. W. Cherry |
PCR-780 |
Effective Luminary 1B |
Provide Pure RR Range, Range Rate, and Time Tag during P20, P22, and P25. |
06/04/69 |
R. Simpson |
LNY-86 |
Luminary 97 |
... At the end of P70 ... a hardware restart
occurred. The lights on the PAC indicated only a
NIGHTWATCHMAN alarm.... |
06/05/69 | J. Stoppelman | PCR-821.2 | Effective Luminary 1D | Move AZO to Fixed Memory. |
06/09/69 |
C. Schulenberg |
LNY-76 |
Luminary 99 |
During P66 only R1 (horizontal velocity) and
R2 (altitude rate) of noun 60 will be updated at the
advertised frequency of once per second.... |
06/13/69 |
David H. Moore |
L-1 |
Luminary |
Fix R13 for check if in P66 before
check for mode control in auto.... |
06/18/69 |
C. Schulenberg |
LNY-77 or
here |
Luminary 99 |
It is possible for all computer activity
governed by the TIME3 interrupt structure (i.e., Waitlist)
to be suspended for a period of about 163 seconds following
the selection of P70 ... |
06/20/69 |
K. W. Krause |
LNY-78 |
Luminary 99 |
Non-zero steady-state attitude errors have
been observed in the final 100 seconds of a nominal ascent
burn.... |
06/20/69 |
K. W. Krause |
LNY-79 |
Luminary 99 |
Crossplane vehicle oscillations during
P64/P65.... |
06/23/69 |
Garman |
LNY-80 |
Luminary 99 |
A V63E causes copying of RADMODES Bit 6 from
CH33 Bit 6 (LR position 1 discrete).... |
06/23/69 |
Garman |
LNY-81 |
Luminary 99 |
V41N72 is used to drive the RR to a given set
of angles.... The crew has no way of knowing N73 is
overwritten ... |
06/24/69 |
Garman |
LNY-82 |
Luminary 97 |
P68 sets MAX deadband, but the routine
"RESTORDB" executed as part of V37 will return the DB to
whatever the crew last requested ... |
06/24/80 |
Garman |
LNY-83 |
Luminary 99 |
At touchdown (P66) N63 gave ... H of 0.0 ft.
... However, the P68 LAT/LONG/ALT display gave an altitude
of -0.4 nm which is not very consistent with the previously
mentioned N63 H. |
06/27/69 |
P. Volante |
LNY-87 or
here |
Luminary 99 |
In P22 the flashing V50 N72 (verify main-lobe
lockon) is displayed following radar lock-on in R21,
contrary to the GSOP specifications. |
07/10/69 |
R. Covelli |
LNY-88
or here |
Luminary 99 |
A hardware reset while R12 is repositioning
the landing radar antenna will prevent the antenna from
achieving position 2 ... |
07/15/69 |
R. Covelli, P. Weissman |
LNY-90
or here |
Luminary 99 |
If an engine fail occurs in P63 between TIG
and throttle up, the flashing V97N63 display will be
overwritten by the static V06N63 display.... |
07/22/69 |
D. Eyles |
PCR-848 |
Effective Luminary 1B |
Prevent RR ECDUs from Stealing LGC Memory
Cycles |
07/23/69 |
B. McCoy |
LNY-89
or here |
Luminary 99 rev 1 |
State Vector was integrated backwards while
in POO, P27. |
07/26/69 |
C. Schulenberg |
L-5 (see also
08/25/69) |
Luminary 1B |
Change the displays at the end of descent and
ascent guidance to be "non-R" type displays. |
07/26/69 |
C. Schulenberg |
L-6 (see also 09/19/69) | Luminary 1B |
Change the call to ZATEROR in the ascent
guidance to a call to the STOPRATE routine. |
07/28/69 |
P. Volante |
L-3 |
Luminary |
Make the erasable for R3 in Noun 49 ...
unshared. |
07/30/69 |
D. Millard |
L-4 |
Luminary |
Compute AOT optic axis using the pad-load ... |
07/31/69 |
R. Gilbert |
LNY-91
or here |
Luminary |
CDU Fail program alarm is given in P20 when
it is not an alarm condition - during a RR CDU zero. |
08/04/69 |
D. Eyles, G. Cherry |
PCR-854 |
Luminary 1B |
For the pinpoint landing which Apollo 12 may
attempt, it is desirable to give the crew a means of
changing RLS through the DSKY. |
08/04/69 |
W. Tindall, G. Cherry |
PCR-855 |
||
08/06/69 |
Eyles |
PCR-882 |
Effective Luminary 1C or 2 |
Replace VHORIZ with something better |
08/07/69 |
M. Hamilton |
LNY-92
or here |
Luminary 1B |
If an extended verb with displays (and no CCS
NEWJOB is done before the first display) is called during a
normal non-flash cyclical display, the extended verb display
may not come up until the key release button is selected.... |
08/08/69 |
S. Copps |
PCR-863.2 |
Effective Luminary 1C |
Make P76 set NODO flag. |
08/08/69 | S. Copps | PCR-872.2 | Effective Luminary 1D | Initiate TFI in P30s. |
08/08/69 | S. Copps | PCR-874.2 |
Effective Luminary 1D |
Change Decimal Load Techinique |
08/14/69 |
G. R. Kalan |
PCR-890 |
Effective Luminary 2 |
Improve slosh stability of CSM - docked DAP |
08/15/69 | R. F. Stengel | PCR-884 | Effective Luminary 2 | Coordination During Manually-Controlled Lunar Landing |
08/15/69 |
Eyles, Adler, Cherry |
PCR-886 |
(Withdrawn) |
Variable Guidance Period |
08/17/69 |
G. R. Kalan |
PCR-888 |
Effective Luminary 1C |
Modification of DAP Control Authority Model
to Include Effect of Jet Plume Deflectors |
08/18/69 |
J. R. Garman |
PCR-892 |
Effective Luminary 1D |
Delete R29 |
08/18/69 |
J. R. Garman |
PCR-893 |
Effective Luminary 1C |
Abort targeting flagbit |
08/18/69 |
J. Garman |
PCR-899 |
Effective Luminary 1D |
N38 in C/A, LS, and R/P lists |
08/18/69 | J. R. Garman | PCR-936.2 | Effective Luminary 1C |
Initialize V90 time to TIG |
08/18/69 |
C. T. Hackler |
PCR-943 |
Effective Luminary 1C |
Velocity Reasonability Test |
08/19/69 |
R. Covelli |
PCR-895 |
Effective Luminary 1C |
LR Reposition by V59E in P63 |
08/19/69 |
R. Covelli |
PCR-896 |
Effective Luminary 1D |
LR Velocity Read Centered at PIP TIME |
08/19/69 |
R. Covelli |
PCR-897 |
Effective Luminary 1D |
Delete PCR 775. |
08/19/69 |
R. Covelli |
PCR-898 |
Effective Luminary 1D |
LR Velocity Read. |
08/19/69 |
P. Volante |
L-1B-01
or here |
Luminary 116 |
Selection of P22 before the CSM has entered
Mode 2 Radar Coverage can result in an erroneous 530 Alarm. |
08/20/69 |
P. Volante |
L-1B-02
or here or reissue |
Luminary 116 |
R29 will not achieve RR lockon. |
08/21/69 |
J. Suddath |
PCR-941 |
Effective Luminary 2 |
Landing Radar Pre-Filter |
08/25/69 |
Craig Schulenberg |
L-5
(see also 07/26/69) |
Luminary 1C |
Fix bug in P70/71 preferred orientation
logic. |
08/27/69 |
R. Goss |
L-1B-03
or here |
Luminary 116 |
The quantity COEFFR, computed in the 1/ACCS
Program, will be incorrectly determined ... |
09/17/69 |
B. McCoy |
L-1B-04
or here |
B. McCoy |
During the Descent, switching the RR Mode
Control into LGC position and then out disables the
X-pointer meter for FORWARD and LATERAL VELOCITY display. |
09/19/69 |
R. Goss |
L-6
(see also 07/26/69) |
R. Goss |
Make room for change to fix anomaly L-1B-03
by deleting unnecessary storage.... |
09/25/69 |
CTH-EG7 |
PCR-287 |
Effective Luminary 1D |
Removal of 526 Alarm in P22 & P20 |
09/30/69 |
B. McCoy |
L-1B-05
or here |
Luminary 116 |
For R60 maneuvers the mode II attitude errors
are placed on the FDAI needles before the desired attitude
is computed. |
09/30/69 |
H. W. Tindall, Jr., J. R. Garman |
PCR-285 |
Effective Luminary Apollo 13 |
Remove check of auto throttle discrete |
10/02/69 |
Garman |
L-1B-06
or here |
Luminary 116 |
In P66 after touchdown with DAP mode in auto
(part of checklist) the following alarms occurred twice
... |
10/02/69 |
Garman |
L-1B-07
or here |
Luminary 116 |
The following events were observed on event
lights driven by telemetry. P20 selected and RR
designating. ... Crew assumed RR alarm and so did not call
it up. |
10/02/69 |
Garman |
L-1B-08
or here |
Luminary 116 |
A 520 alarm occurred at time of abort (to
P70).... |
10/07/69 |
R. Covelli |
PCR-968 |
Effective Luminary 1C |
LPD bias correction |
10/14/69 |
R. Lones |
PCR-970.2 |
Effective Luminary 1D |
Modify Gyro Torquing Routine |
10/20/69 |
Bruce McCoy |
L-7 |
Luminary |
Change MARKRUPT coding to look for ROD inputs
as a decision maker ... |
10/20/69 |
Densmore |
L-8 |
Luminary 1C |
Remove DSP2BIT in PINBALL GAME.... |
10/23/69 |
G. R. Kalan |
L-1B-10
or here |
Luminary 116 |
When the ACA is returned to the detent
position after being recycled in and out of detent in the
manual rate command mode, the DAP may enter the attitude
hold mode immediately, rather than first damping the
spacecraft rates as desired. |
10/28/69 |
R. Covelli |
L-1B-09
or here |
Luminary 99, 116 |
If a restart occurs during a radar read, the
following radar read may be incorrect.... |
10/28/69 |
Densmore |
L-9 |
Luminary |
Move block of constants used only in
interpretive from band 5 to Bank 4 ... to fix Anomaly
L-1B-06. |
10/29/69 |
Densmore |
L-10 |
Luminary |
Provide a tear-out for section 2 GSOP of
absolute addresses for the update program.... |
10/31/69 |
B. McCoy |
L-1B-11
or here |
Luminary 116 |
Terminal mass error of ~250 lbs. in descent
and 50 lbs. in ascent exist due to inaccurate mass
computation in SERIVER. |
11/05/69 |
P. Adler |
L-1C-01
or here |
Luminary all through 1C |
Delta-V increment may be subtracted from VG twice following a restart. |
11/12/69 |
J. W. Jurgensen |
PCR-294 |
Effective Luminary 1D |
Update Fixed Memory Mass Properties |
11/25/69 | McCoy | L-11 or here |
Luminary 1D | Change the coding in SPEEDRUN (during SERVICER) to compute ... |
12/01/69 |
R. Covelli |
PCR-979 |
Effective Luminary 1D |
Delete 521 Alarm |
12/01/69 |
R. Covelli |
L-1C-03
or here |
Luminary 130 & 131 |
If a V59E is used to reposition the Landing
Radar antenna to position two at any time other than powered
descent in P63, the return from the repositioning wil be
incorrect.... |
12/03/69 |
B. McCoy |
L-1C-02 |
Luminary 130 |
During the initialization pass for an "Early
Abort" from PDI, locations of a VAC area are destroyed. |
12/03/69 |
R. F. Stengel |
Unnumbered
PCR |
(Unofficial) |
Attitude Command During Manually-Controlled
Lunar Landing |
12/09/69 |
D. Millard |
PCR-982 |
Effective Luminary 1D |
Extend capability of Lunar Surface Star
Acquisition Routine R59. |
12/09/69 |
D. Millard |
PCR-983 |
Effective Luminary 1D |
Unit Vector Capability for N88 |
12/10/69 |
C. B. Parker |
PCR-296 |
Effective Luminary 1D |
Set "G" vector parallel to landing site
radius vector. |
12/10/69 |
P. Rye |
L-12 |
Luminary |
Change exit from LONGCALL |
12/12/69 |
J. M. Reber |
PCR-986.2 |
Effective Luminary 1D |
Update Fixed Constants for 1970-1971
Ephemeris Year. |
12/17/69 |
G. Edmonds |
PCR-991.2 |
Effective Luminary 1D |
Sum Uplink Data |
12/19/69 |
P. Volante |
PCN-990 |
Effective Luminary 1D |
V44 RR Remode Check |
12/19/69 |
P. Volante |
L-1C-04 |
Luminary 1C |
If V44 (terminate RR continuous designate) is
keyed in while an antenna remode is in progress, the RR
error counters are disabled ... |
12/30/69 |
P. Rye |
L-13 or here |
Luminary |
Create subroutine RLEASVAC to release VAC
area and change FINDVAC to a NOVAC job.... |
01/07/70 |
B. McCoy |
L-1C-05 |
Luminary 116 |
HCALC, the altutude estimate during a Descent
or an Ascent, does not have sign agreement; ... |
01/09/70 |
Adler |
L-14 |
Luminary 1D |
Save 3 words in bank 1 by equating GENADR ... |
01/16/70 |
C. T. Hackler |
PCR-298 |
Effective Luminary 1D |
Decrease time to call alarm code 523 |
01/16/70 |
McCoy |
L-15 |
Luminary 1D |
Instead of setting bits via "CS, INH, MASK,
TS", a "TC CLRADMOD" ... |
01/19/70 |
J. R. Garman |
L-1C-06 |
Luminary 131 rev 1 |
P40, P42, or P63 commanding ullage, with
average-g off.... |
01/21/70 |
J. R. Garman |
PCR-302.2 |
Effective Luminary 1D |
Channel 77 |
01/26/70 |
P. Rye |
PCR-996 |
Effective Luminary 1D |
Liftoff Check in P07 |
01/30/70 |
J. H. Alphin |
PCR-306 |
Effective Luminary 1D |
Add ΔVM to descent/ascent downlist |
02/02/70 |
A. Klumpp |
PCR-1013 |
Effective Luminary 1C |
Multiple Servicers Avoidance in P66. |
02/02/70 |
R. Larson |
PCR-1015 |
Effective Luminary 1D |
Check for AVEGON at Start of R36. |
02/06/70 |
Don Eyles, Allan Klumpp |
L-16 |
Luminary |
P66 should call the throttle as follows ... |
02/10/70 | R. Covelli | PCR-1021 | Effective Luminary 1D | Fixed Memory Landing Radar Transformation Matrices |
02/10/70 |
R. Covelli |
PCR-1022 |
Effective Luminary 1D |
Landing Radar Position Alarms |
02/13/70 |
R. W. Carl |
PCR-311 |
(Disapproved) |
Rendezvous and Prethrust Downlink Change |
02/18/70 |
B. McCoy |
L-17 |
Luminary 1D |
Remove the zeroing of bit 4 of channel 14
from STARTSUB2. |
02/25/70 |
T. J. Blucker |
PCR-307 |
Effective Luminary 1D |
Lunar Surface Align Downlist Change |
02/25/70 |
Dave Moore |
L-18 |
Luminary 1D |
Change order of coding from ... |
02/26/70 |
S. G. Bales |
PCR-314 |
Effective Luminary 1D |
Downlist changes for powered descent |
02/26/70 |
Eyles |
PCR-1024 |
(Disapproved) |
Variable Guidance Period Servicer |
02/27/70 |
R. Covelli |
PCR-1025 |
Effective Luminary 1D |
Remove gravity computation after landing
radar attitude update |
03/02/70 |
P. Rye |
PCR-315.2 |
Effective Luminary 1D |
Channel 77 |
03/03/70 |
B. Kriegsman |
PCR-1027 |
Effective Luminary 1D |
A priori terrain models |
03/03/70 |
B. Kriegsman |
PCR-1028 |
Effective Luminary 1D |
Two-segment Altitude Weighting Functions for
Landing Maneuver |
03/03/70 |
Hamilton |
L-21 |
Luminary |
Put in a list of ECADRs at the beginning of
the listing for uplinked parameters ... |
03/11/70 |
W. Ostanek |
L-1C-07 |
Luminary 131 & 131 rev 1 |
The result of extended verb precision
integration while in P00 may be stored into permanent state
vector storage, possibly resulting in erroneous state
vectors and W-matrix.... |
03/11/70 |
L. Berman |
PCR-1030 |
(Disapprovd) |
Replacement of Logsub |
03/18/70 |
C. T. Hackler |
PCR-310 |
Effective Luminary 1D |
Time to call 511 alarms |
03/18/70 |
R. Larson |
PCR-1029 |
Effective Luminary 1D |
Timing Indicators |
03/18/70 |
McCoy |
L-20 |
Luminary 1D |
Change "NEGTOTKP" to "NEGTORKP", ... |
03/19/70 |
Eyles |
L-19 |
Luminary |
Use QUICTRIG and *NBSM* in P66 ... |
03/23/70 |
Volante |
L-22 |
Luminary 1D |
Delete setting and resetting R04FLAG.... |
04/01/70 |
G. R. Kalan |
L-1C-08 |
Luminary 131 rev 1 |
A hardware or software Restart while the DAP
is in the manual rate command mode may cause ... |
04/04/70 |
McCoy |
PCN-1035 |
Effective Luminary 1D |
V68 and P66 terminate the terrain model |
04/07/70 |
Eyles |
L-24 |
Luminary 1D |
Move ZERLINA, ELVIRA, AZINCR1, and ELINCR1
from E7 ... |
04/08/70 |
Densmore |
L-23 |
Luminary 1D |
Delete definitions of 4 unused shared
erasables ... |
04/21/70 |
McCoy |
PCN-1036 |
Effective Luminary 1D |
PCR 996 (Liftoff check in P07) Improvements |
04/21/70 |
McCoy |
L-25 |
Luminary |
Modify 13 instructions in BURN BABY BURN ... |
04/22/70 |
Klumpp |
PCN-1037 |
Effective Luminary 1D |
P66 corrections |
04/27/70 |
McCoy |
PCR-1038 |
Effective Luminary 1D |
Keep 526 Alarm in P20 (PCR 287) |
04/28/70 |
Klumpp |
PCN-1039 |
Effective Luminary 1D |
TERRAIN Model improvements (PCR 1027) |
04/28/70 |
McCoy |
PCN-1040 |
Effective Luminary 1D |
Only P41 has Early TFI Countdown (PCR 872.2) |
05/08/70 |
J. Klawsnik |
PCN-1042 |
Effective Luminary 1D |
Sect. 3 Rev. 4 GSOP Fix for L-1 C-08 |
05/08/70 |
Barnert |
L-26 |
Luminary |
Insert check for coarse align before
attempting gyro torquing |
05/11/70 |
H. Maher |
PCN-1007 |
Effective Luminary 1D |
GSOP Section 2 Rev 9 Editorial Changes |
05/11/70 |
D. Millard |
PCR-1044 |
Effective Luminary 1E |
Re-design of R53-R57 |
05/12/70 |
J. R. Garman |
L-1D-01
or here |
Luminary 163 (1D) |
"NEEDLER" initialization never takes place
following DAP turn-on if IMU error counters (CH 12 B 06) are
enabled.... |
05/12/70 |
McCoy |
PCN-1043 |
Effective Luminary 1D |
Remove zeroing of bit 4 of channel 14 on
restart or V37. |
05/15/70 |
J. Klawsnik |
PCN-1008 |
Luminary 1D |
GSOP Section 3 Rev 5 Editorial Changes |
05/19/70 |
N. Barnert, P. Rye |
L-1D-02
or here |
Luminary through 1D |
It is possible that a core set overflow
(31202 Abort) will result from a "bad" return from pulse
torquing due to IMU cage or coarse align. |
05/22/70 |
R. L. Pearson |
L-1D-03 |
Luminary 163 |
The velocity updates during descents (P-63
and P-64) fail the reasonableness test ... |
05/28/70 |
McCoy |
PCR-1048 |
Effective Luminary 1D |
Initialize Elevation Angle in P34 |
05/28/70 |
Densmore |
L-27
or here |
Luminary 1D |
Unused constant OCT 7777 was deleted, ... |
06/03/70 |
McCoy |
PCN-1052 |
Effective Luminary 1D |
P66 IMU/C.G. Offset compensation |
06/12/70 |
R. Gilbert |
PCR-1055 |
Effective Luminary 1E |
NOUN for LPD BIAS |
06/15/70 |
Haise |
PCR-317.2 |
Effective Luminary 1E |
Rescaling nouns containing range and range
rate |
06/18/70 | G. R. Kalan | L-1D-07
or here |
Luminary 173 (1D) | If the mode control switch is moved from the ATT. HOLD to the AUTO position before the manual rate command mode has been properly terminated .... |
06/22/70 | P. Volante | L-1D-05
or here |
Luminary 173 (1D) | The following extended verb routines should not be requested if P20 or P22 is running and the range to the CSM is greater than 400 N. M. ... |
06/24/70 | B. McCoy | L-1D-08
or here |
Luminary 173 (1D) | Padload "LRWH1" shares erasable memory location with RM of P20. |
06/25/70 |
McCoy |
L-28 |
Luminary 1E |
Remove LRPOS initialization from P63 ...
Change DOUBLE to DDOUBL ... Change DXCH to an XCH ... |
06/26/70 |
P. Volante |
L-1D-04
or here |
Luminary 173 (1D) |
P25 will not control spacecraft attitude if
range to CSM is greater than 566 N. M. |
06/29/70 |
McCoy |
L-1D-06
or here |
Luminary 173 (1D) |
"DVTOTAL", the accumulated measured Delta
Velocity from SERVICER, incremented twice in one SERVICER
cycle after Restart occurred. |
07/06/70 |
Eyles |
PCR-1058
or here
or here |
Effective Luminary 1D |
New Landing Analog Displays (R10) |
07/06/70 |
J. H. Alphin |
PCR-319 |
Effective Luminary 1E |
A Priori Terrain (ΔH on Downlist) |
07/07/70 |
P. Weissman |
PCR-1070 |
Effective Luminary 1E |
GSOP Change for FDAI Needle Initialization
Fix (L-1D-01) |
07/20/70 |
B. McCoy |
PCR-1056
rev 1 |
Effective Luminary 1D |
Improvements for Impulse and Ullage Logic |
07/27/70 |
J. H. Alphin |
PCR-322 |
Effective Luminary 1D |
Change Fixed Constant "Throtlag" from 0.2 to
0.08 |
07/27/70 |
R. W. Carl |
PCR-324
or here |
Effective Luminary 1E |
PGNCS/AGS RR data transfer. |
07/29/70 |
B. F. Cockrell |
PCR-323 |
(Disapproved) |
Improvements to Ephemerides. |
08/03/70 |
S. Copps |
PCR-1066 |
Effective Luminary 1E |
Display N81 On All Passes In P34, P35, P74,
P75 |
08/11/70 |
R. Covelli |
L-29 |
Luminary |
Change the two lines of coding at locations
MOONSPOT and MOONSHOT +1 ... |
08/11/70 |
R. Covelli |
L-30 |
Luminary |
In SERVICER, move the tag "MOONSPOT" from the
location where it currently is ... |
08/12/70 |
Sumner Rosenberg |
L-31 |
Artemis |
Set a list of labels = to each location that
is in the downlink lists ... |
08/12/70 |
Sumner Rosenberg |
L-32 |
Artemis |
Put a list in the downlink log section, using
the new instruction "CHECK=" ... |
08/17/70 |
Eyles |
Unnumbered
PCR |
(Unofficial) |
Eliminate P63 Alignment Option |
08/21/70 |
Rye |
L-37 |
Luminary 1E |
Make bad return from IMUSTALL in 1/GYRO
continue instead of go to ENDOFJOB |
08/24/70 |
P. S. Weissman |
L-1D-10
or here |
Luminary through 175 |
There are a number of windows during which a
change in major mode would wipe out a waiting 1/ACCS job,
leaving the DAP with improper data.... |
08/24/70 |
Eyles |
Unnumbered
PCR |
(Unofficial) |
Simpler LR turn-on logic |
08/24/70 |
Eyles |
Unnumbered
PCR |
(Unofficial) |
Zero auto-throttle when in AGS |
08/26/70 |
P. S. Weissman |
PCN-1059 |
Effective Luminary 1E |
Have major modes changes set up a 1/ACCS job. |
08/26/70 |
P. S. Weissman |
L-33 |
Luminary 1E |
Load the "trap" of the DAP state estimator
with a value that is 1 bit off from the GSOP value.... |
08/26/70 |
Eyles |
Unnumbered
PCR |
(Unofficial) |
Ignore V34E display response during descent |
09/02/70 |
McCoy |
PCR-1079 |
Effective Luminary 1E |
ALMCADR on the telemetry |
09/08/70 |
R. Larson |
PCR-1080 |
(Disapproved) |
Change time to perform IMUCDU zero. |
09/11/70 |
R. Larson |
L-1D-11
or here |
Luminary 178 (1D) |
The value of WB is mis-scaled in
Luminary 1D by a factor of 2 (See Luminary MEMO #169) |
09/12/70 |
P. Volante |
L-1D-12
or here |
Luminary 178 (1D) |
Selection of V41N72 (RR Coarse Align) while
an RR reposition or remode is in progress results in
incorrect operation of V41N72.... |
09/14/70 |
J. M. Reber |
PCR-1082.2 |
Effective Luminary 1E |
Update Fixed Constants for 1971-1972
Ephemeris Year |
09/21/70 |
N. Barnert |
L-34 |
Luminary |
Erasable clean-up ... |
09/22/70 | Haise, Kaiser | PCR-340 | (Disapproved) | LATVEL Polarity Change |
09/23/70 |
C. T. Hackler |
PCR-333 |
Effective Luminary 1E |
Change recognition of ROD inputs |
09/23/70 |
Hase, Kaiser |
PCR-335 |
Effective Luminary 1E |
Remove Alignment Option from P63 |
09/23/70 |
Ed Grace |
PCR-1092 |
(Disapproved) |
Increase Accuracy of Determination of
Accelerometer S. F. |
09/25/70 |
P. Rye |
PCR-1088 |
Effective Luminary 1E |
Inhibit program change during critical 10.56
seconds after IMU zero. (V37 lockout) |
09/28/70 |
Haise, Kaiser |
PCR-334
rev 1 or here |
Effective Luminary 1E |
Change DSKY DESCENT/ASCENT NOUNS |
09/28/70 |
Haise, Kaiser |
PCR-336
rev 1 |
Effective Luminary 1E |
Allow Extended Verbs During P20 Maneuvers.
(Delete 06 18 Display in R60.) |
09/28/70 |
Haise, Kaiser |
PCR-338 |
Effective Luminary 1E |
Change LPD Scaling to 1.0° In All Directions |
09/28/70 |
Haise, Kaiser |
PCR-339 |
Effective Luminary 1E |
Have P20 F50 72 Display Update |
09/29/70 |
J. H. Alphin |
PCR-341
or draft |
Effective Luminary 1E |
Landing Radar Reasonability Test |
09/29/70 |
Barnert |
L-35 |
Luminary 1E |
Change coding in LLGE to store triple
precision ... |
10/01/70 | Haise, Kaiser | PCR-337
rev 1 or here |
(Disapproved) | Illuminate Unused DSKY Light for N49 |
10/02/70 |
McCoy |
PCR-1091 |
Effective Luminary 1E |
Priority Display Light on DSKY |
10/05/70 |
William Robertson |
PCR-1093 |
Effective Luminary 1E |
Eliminate 481 day TEPHEM limitation in
Lunar-Solar Ephemerides |
10/05/70 |
Rye |
L-36 |
Luminary |
Define a tag TMPDV = GDT/2 for use by
S34/35.5 which now uses GDT/2 directly. |
10/05/70 |
Densmore |
L-39 |
Luminary 1E |
Change a CADR to an ADRES following a TC
TWIDDLE in RADSAMP |
10/07/70 |
P. S. Weissman |
PCN-1095 |
Effective Luminary 1E |
Avoid incomplete close-out of manual rate
command mode (Anomaly L-1D-07) |
10/08/70 | Larson | L-1D-13 | Luminary 178 (1D) | PCR 1028 provided a separate erasable load for LRWH in the programs following P63.... |
10/08/70 | C. D. Sykes | L-1D-14
or here |
Luminary 178 (1D) | At TIG-5 in P40, TGO is computed. If TGO is computed to be less than 6 seconds, NO THROTTLE FLG (FW5 B12) should be set .... |
10/08/70 |
McCoy |
PCR-1096 |
(Disapproved) |
Erasable Memory De-orbit Program Goes Fixed |
10/08/70 |
Barnert |
PCN-1124 |
Effective Luminary 1E |
P00D00 Abort. (See L-1D-15) |
10/15/70 |
C. Work |
PCR-1106 |
(Disapproved) |
Trim gimbal control mode change |
10/20/70 |
P. Rye |
PCR-1100 |
Effective Luminary 1E |
Delete setting of NODOFLAG in R47 |
10/21/70 |
T. Price |
PCR-343 |
Effective Luminary 1E |
Disapprove PCR 340. |
10/22/70 |
G. Edmonds, Jr. |
PCR-1107 |
Effective Luminary 1E |
Back up of Abort bits Channel 30 Bits 1 and 4
for on (0) |
10/22/70 |
G. Edmonds, Jr. |
PCR-1108 |
(Disapproved) |
Back up Mark X, Y and Mark Reject Channel 16
Bits 3, 4, 5 |
10/22/70 |
G. Edmonds, Jr. |
PCR-1109 |
Effective Luminary 1E |
Back up of off (1) failures of Auto Throttle
Channel 30 Bit 5 |
10/22/70 |
G. Edmonds, Jr. |
PCR-1110 |
Effective Luminary 1E |
Back up for failures of the display inertial
data bit Channel 30 Bit 6 |
10/22/70 |
G. Edmonds, Jr. |
PCR-1111 |
Effective Luminary 1E |
Back up failure of Auto Pilot mode and
AGS/PGNS select switch bit Channel 30 Bit 10, Channel 31
Bits 13, 14 |
10/22/70 |
G. Edmonds, Jr. |
PCR-1112 |
(Disapproved) |
Back up for on (0) failures of translation
commands Channel 31 Bits 7-12 |
10/22/70 |
G. Edmonds, Jr. |
PCR-1113
or draft |
(Withdrawn) |
Back up failure of the LPD bit Channel 31
Bits 1, 2, 5, and 6. |
10/23/70 |
Haise, Kaiser |
PCR-344 |
(Disapproved) |
Navigation inputs via DSKY |
10/23/70 |
Eyles |
L-43 |
Luminary |
Enable the redesignation trap at the time of
the PROCEED to V06N64 instead of at the start of P64 |
10/26/70 |
P. Weissman |
PCR-1121 |
Effective Luminary 1E |
Replace acceleration estimate with RCS
inhibit flags on non-powered downlists. |
10/26/70 |
Rye |
L-38 |
Luminary 1E |
Rearrange clearing of flags in V56, change
code at TRMTRAK1 to interpretive |
10/26/70 |
P. S. Weissman |
L-41 |
Luminary |
Avoid reading the GTS drive bits in channel
12 ... |
10/27/70 |
L. Berman |
PCR-1116 |
(Disapproved) |
Automatic RCS Steering |
10/27/70 |
Rye, Barnert, Hamilton |
PCR-1117.2 |
Effective Luminary 1E |
Addition to P00D00 logic; Add ABORT GSOP
Description |
10/28/70 |
Densmore |
L-40 |
(Canceled) |
Delete GOMARK2, MARKFORM, and GOMARK2R.... |
10/29/70 |
C. Hackler |
PCR-345 |
(Disapproved) |
Change of Erasable Load |
11/02/70 |
M. Hamilton |
PCR-1097.2
rev 1 |
Effective Luminary 1E |
Provide V30, V31 Operator Error Lockout |
11/02/70 |
P. S. Weissman |
PCR-1122 |
(Disapproved) |
No Control DSKY Light |
11/05/70 |
N. Brodeur |
L-42 |
Luminary 1E |
Append a (+/-) to relative addresses ... |
11/12/70 |
N. Barnert |
L-1D-15
or here |
Luminary 178 (1D) |
P00D00 Abort while P20 (P25) is running in
the background will kill P20 (P25) and prevent its
re-establishment unless RNDVZFLG (P25FLAG) is subsequently
cleared. |
11/18/70 |
B. McCoy |
PCN-1126 |
Effective Luminary 1E |
Set NOTHROTL for DPS Impulse Burn |
11/24/70 |
R. Larson |
PCN-1127 |
Effective Luminary 1E |
Change to downlink list |
11/25/70 |
T. Price |
PCR-347 |
Effective Luminary 1E |
Modification to code word configuration for
PGNCS/AGS data transfer |
11/25/70 |
F. Haise, T. Kaiser |
PCR-348 |
Effective Luminary 1E |
New target - ΔV program for LGC (P77) |
11/30/70 |
Work, Weissman |
PCR-1129
or draft |
Effective Luminary 1E |
Update mass-dependent calculations in 1/ACCS |
12/01/70 |
Weissman |
L-44 |
Luminary 1E |
Make T5ADR single precision since it always
goes to F16 in E6. |
12/03/70 |
McCoy |
L-45 |
Luminary |
Clear INTYPFLG prior to INTEGRUS call in P21
recycle option |
12/08/70 |
P. Volante |
L-1D-16
or here |
Luminary 178 |
Fixed Memory constant (VINJNOM) (Nominal
Injection Velocity) is 5509.3 fps instead of 5509.5 fps as
specified in GSOP. |
12/10/70 |
P. Volante |
L-1D-17
or here |
Luminary 178 |
The flashing verb 37 which terminates P22
when the range is greater than 400 n.m. and the range-rate
is positive may not occur. |
12/10/70 |
P. Volante |
L-1D-18
or here |
Luminary 178 |
In P22, if the R21 routine (RR designate)
drives the antenna close to the RR Mode II limits as the CSM
is moving away from the landing site, .... |
12/10/70 |
Densmore |
L-46 |
Luminary 1E |
Delete INHINT before waitlist call in AOTMARK
(waitlist does INHINT) |
12/11/70 |
P. S. Weissman |
L-47 |
Luminary 1E |
Re-code the P-axis minimum impulse routine
more efficiently ... |
12/15/70 |
J. B. Smith |
PCN-1009 |
Effective Luminary 1D |
Luminary 1D Editorial Changes to Section 4
(GSOP) |
12/21/70 |
Rye, Barnert |
PCN-1132 |
Effective Luminary 1E |
Correction to PCR 1117.2, Addition to P00D00
Logic, Add Abort GSOP Description |
12/28/70 |
P. S. Weissman |
PCN-1133 |
Effective Luminary 1E |
Revision of descent mass limits to go along
with PCR 1129 |
12/29/70 |
P. S. Weissman |
PCR-1134 |
Effective Luminary 1E |
Revision of PCR 1111: Back-up of Guid Select
and Mode Control switches |
12/30/70 |
B. McCoy |
L-1D-19
or here |
Luminary 178 |
Restarts in P20/25 may erroneously display
V50N18 on DSKY |
12/31/70 |
P. Rye |
L-1D-20
or here |
Luminary 178 (1D) |
If a BAILOUT occurs during permanent
integration in P00, R22, or R21 and is followed by any other
restart before another restart point has been established,
.... |
01/12/71 |
P. Volante |
PCN-1137 |
Effective Luminary 1E |
Correct constant for ascent guidance |
01/14/71 | J. R. Garman | L-1D-24 | Luminary 178 | P70 or P71 selection prior to P12 leaves P12 with at least 3 flags abnormally set .... |
01/14/71 | J. R. Garman | L-1D-25 | Luminary 178 | Exiting P63, P40, or P42 with a V37 between average-G on and time of auto-ullage initiate may not kill the waitlist call to initiate ullage.... |
01/18/71 |
P. Volante |
L-1D-21 |
Luminary 178 |
An RR antenna reposition initiated by R25
just after starting P20 or P22 can cause P20/P22 to loop and
thus never get RR lock-on. |
01/18/71 |
P. Volante |
L-1D-22 |
Luminary 178 |
A hardware or software restart during a RR
TURNON sequence may result in an incorrect setting of the
mode flag (ANTENFLG) .... |
01/19/71 |
A. Klumpp |
L-1D-23 |
Luminary 178 |
In the erection of the guidance coordinate
frame (CGCALC), WCHPHASE instead of WCHPHOLD is used to
select .... |
01/22/71 |
B. McCoy |
PCN-1141 |
Effective Luminary 1E |
Initialize FLRCS in P12 |
02/16/71 |
J. Klawsnik |
PCN-1143 |
Effective Luminary 1E |
Section 3 Revision 6 GSOP Changes |
04/05/71 |
R. Larson, K. Greene |
PCN-1147 |
Effective Luminary 1E |
Clarification of the Implementation of PCR
334 Rev 1 "Change DSKY Descent/Ascent Nouns" |
04/09/71 |
R. L. Pearson |
L-1E-06
or here |
Luminary 209 |
A V78 during P63 N62 display prior to
average-G results in P.A. 1201 and clobbers the LM velocity
vector. |
04/09/71 |
R. L. Pearson |
L-1E-07
or here |
Luminary 209 |
An inadvertent proceed on the V16N80 display
in P20 caused the program to "get lost".... |
04/09/71 |
R. L. Pearson |
L-1E-09(?)
or here |
(Not an anomaly) |
A V33 during P22 at range less than 400nmi
causes P22 to to to sleep when range is equal to 400 and
until the V33 is terminated. |
04/12/71 |
P. Volante |
L-1E-04 |
Luminary 210 |
P22 lunar surface navigation initializes the
W-matrix when the mark counter is zero, instead of checking
the RENDFLAG.... |
04/13/71 |
P. Volante |
L-1E-01 |
Luminary 210 |
If P22 is selected when range to CSM is
>400 N. M. and closing, then V37 will not flash when ... |
04/13/71 |
P. Volante |
L-1E-02
rev 1 |
Luminary 210 |
Exiting P63, P40 or P42 with a V37
approximately 50 microseconds before ullage on will result
in ... |
04/13/71 |
D. Moore |
L-1E-03 |
Luminary 210 |
A V34E response to the flashing V06N60
display in P66 may result in a 31502 bailout alarm |
04/13/71 |
P. Volante |
L-1E-05
rev 1 |
Luminary 210 |
If an engine fail occurs in P70 or P71, and
an enter response is made to the flashing verb 97, noun 63
will be displayed with flashing verb 99, instead of noun
94.... |
04/14/71 |
P. Weissman |
L-1E-08
or here |
Luminary 209 (1E) |
DAP interrupt could occur in the middle of
the ZATTEROR zeroing sequence or STOPRATE |
04/14/71 |
P. Volante |
PCN-1148 |
Effective Luminary 1E |
Add FRSTIME flag definition to section 2 GSOP |
The following table is a series of memos from the MIT Instrumentation Lab dealing with issues of Colossus software development. Ones which we know about but don't have copies are grayed out.
COLOSSUS Memo #
Date
Author
Subject
1
11/07/67
J. Rhode
Nothing's Here to Stay - Not Even KKK
2
11/15/67
S. Copps
Tiger Team
3
11/20/67
F. Martin
TLI Design & Review Committee
4
11/22/67
S. Copps
Chapter 4 COLOSSUS GSOP
5
11/27/67
J. Saponaro
Synchronization of W-Matrix & State Vector
6
11/30/67
D. Estabrook
Alarm & Abort Codes in SUNDISK
7
11/30/67
A. Kosmala
Preliminary COLOSSUS Level 4 Test Plan
8
12/04/67
F. Martin
GSOP Review
9
12/05/67
S. Copps
Expected NASA Initiated PCR
10
12/08/67
F. Martin
SUNDISK & COLOSSUS Chapter 3 and Autopilot Priorities
11
12/14/67
F. Martin
TLI and Mass-Inertia Update
12
12/20/67
F. Martin
Chapter 4 and 5 of COLOSSUS GSOP
13
12/15/67
S. Copps
Chapter 4 COLOSSUS GSOP
14
01/08/68
M. Hamilton
COLOSSUS Revisions 136, 137 and 138
15
01/08/68
F. Martin
Translunar Injection Program P15
16
01/14/68
M. Hamilton
COLOSSUS Revisions 139, 140 and 141
17
01/17/68
R. Bairnsfather
Conic Time of Flight Calculation
18
0/17/68
F. Martin
COLOSSUS Internal Change Procedures
19
01/22/68
M. Hamilton
COLOSSUS Revisions 142, 143 and 144
20
01/22/68
C. Braunhardt
Test Plans 21
01/24/68
J. Vella
Recent Changes to PINBALL Affecting DSKY Operation
22
23
01/29/68
F. Martin
Detailed Description of the SUNDISK/COLOSSUS Delta-V Monitor
24
01/29/68
M. Hamilton
COLOSSUS Revisions 145, 146, 147 and 148
25
02/06/68
M. Hamilton
COLOSSUS Rev. 149, 150,151 and 152
26
02/06/68
A. Martorano
Minutes of PCR Meeting 2 February 1968
27
02/12/68
M. Hamilton
Revisions 153, 154, 155, 156 and 157
28
02/14/68
S. Davis
Hybrid Facility Procedures
29
02/14/68
M. Hamilton, A. Kosmala
Milestones for Level 4 Testing
30
02/14/68
A. Kosmala
COLOSSUS Level 4 Documentation
31
02/16/68 F. Martin
COLOSSUS Internal Change Procedures
32
02/19/68 M. Hamilton
COLOSSUS Rev. 158, 159, 160, 161, 162 & 163
33
02/20/68 J. Saponaro
Lunar Landmark Tables for Use in COLOSSUS Testing
34
02/26/68 B. Tinkham
COLOSSUS Downlists
35
02/26/68 M. Hamilton
COLOSSUS Revs. 164, 165, 166,167 and 168
36
02/27/68 M. Hamilton
COLOSSUS Priority Displays
37
03/04/68 M. Hamilton
COLOSSUS Revisions 169,170,171 and 172
38
03/04/68 A. Kosmala
Key Release Light
39
03/08/68
N. Neville
SETUP504
40
03/11/68
M. Hamilton
COLOSSUS Rev. 173, 174,175,176 and 177
41
03/14/68
A. Kosmala
ABORT
42
03/15/68
J. Saponaro
AGC Time Dependent Constants
43
03/18/68
M. Hamilton
COLOSSUS Revs. 178,179, 180, 181 and 182
44
03/20/68
F. Martin
COLOSSUS Verification Plan- Preliminary
45
03/26/68
M. Hamilton
COLOSSUS Revs. 183, 184 and 185
46
03/26/68
C. Braunhardt
Status Report-COLOSSUS Level 3 Verification Plan
47
03/28/68
M. Hamilton
COLOSSUS Level 4 Assignments
48
04/05/68
C. Braunhardt
Addenda COLOSSUS Level 3 Verification Plan
49
04/03/68
M. Hamilton
COLOSSUS Revisions 186, 187 and 188
50
04/09/68
M. Hamilton
COLOSSUS Revisions 189, 190 and 191
51
04/17/68
M. Hamilton
COLOSSUS Revisions 192, 193 and 194
52
04/24/68
C. Braunhardt
Standards for Verification Plans
53
04/23/68
M. Hamilton
COLOSSUS Revision 196
54
04/25/68
F. Martin
Section 4 (Rev. 1) of the COLOSSUS GSOP
55
04/25/68
H. Walsh
Downlink Edit Notes
56
05/02/68
M. Hamilton
COLOSSUS Revisions 197, 198, 199, and 200
57
05/06/68
M. Hamilton
COLOSSUS Revisions 201 and 202
58
05/13/68 Don Eyles RTB 59
05/13/68
J. A. Saponaro
Problems Concerning the Lunar Sphere of Influence
60
05/14/68
M. Hamilton
COLOSSUS Revisions 203, 204 and 205
61
05/22/68
M. Hamilton
COLOSSUS Revisions 206, 207 and 208
62
06/03/68
M. Hamilton
COLOSSUS Revisions 209 and 210
63
06/06/68
M. Hamilton COLOSSUS Revs. 211 and 212
64
06/14/68
M. Hamilton
COLOSSUS Revisions 213 and 214 65
06/18/68
S. David
Revision of COLOSSUS Digital Environment
66
06/19/68
Fred H. Martin
A Multiplier Effect While Using TLOSS During Simulations
67
06/21/68
M. Hamilton
COLOSSUS Revisions 215 and 216
68
06/26/68
M. Hamilton
COLOSSUS Revision 217
69
07/08/68
M. Hamilton
COLOSSUS Revisions 218 and 219
70
07/10/68
M. Hamilton
COLOSSUS Revision 220
71
07/11/68
F. Martin Coasting in Average-G
72
07/18/68
M. Hamilton
COLOSSUS Revision 221 73
07/22/68 F. Martin Behavior of the Tracker & Uplink ACTY Lights During Rendezvous
74
07/29/68 P. Rye
COLOSSUS Revisions 223 and 224
75
08/02/68 P. Rye COLOSSUS Revs. 225, 226 and 227
76
08/06/68 P. Rye COLOSSUS Revs. 228, 229 and 230
77
08/06/68 P. Rye COLOSSUS Program Notes at Time of FACI (8/8/68)
78
08/13/68 P. Rye COLOSSUS Revisions 231 and 232
79
08/13/68 F. Martin Pre-FACI Action Items
80
08/20/68 F. Martin COLOSSUS Release
81
08/19/68 P. Rye COLOSSUS Revisions 233 through 236, COL 236 Revisions 1 and 2
82
08/28/68 M. Hamilton COLOSSUS Level 5 Hybrid Testing
83
08/29/68 M. Hamilton COLOSSUS Digital Level 5 Testing
84
08/26/68 T. Crocker
Lunar Landmark Tables
85
09/06/68 F. Martin Sketch of COLOSSUS I Level 5 Plan
86
09/11/68 M. Hamilton COLOSSUS Digital Level 5 Assignments
87
09/12/68 W. Ostanek
Relative Coasting Integration Error Variance
88
09/13/68 F. Martin Priorities for COLOSSUS 1 Level 5 Mission Performance Testing Plan
89
09/24/68 M. Hamilton COLOSSUS Assemblies
90
09/25/68 N. Brodeur
COLOSSUS Revision 238
91
09/26/68 N. Brodeur
Known Anomalies in Revision 237
92
10/01/68 N. Brodeur
COLOSSUS Revision 239
93
10/02/68 M. Hamilton
New Names for COLOSSUS Assemblies
94
10/03/68 M. Hamilton
COLOSSUS Revision 237*
95
10/10/68 N. Brodeur
COLOSSUS Revision 240
96
10/11/68 F. Martin
COL I Level 5/6* Test Plan
97
10/15/68 N. Brodeur
COLOSSUS Revisions 241 and 242
98
10/23/68 N. Brodeur
COLOSSUS Revision 243 and 244
99
10/22/68 P. Rye
Revisions 1 - 5 of COMANCHE
100
10/30/68 N. Brodeur
COLOSSUS Revisions 245 - 249
101
11/05/68 G. Edmonds
System Test Group Tests of COLOSSUS I
102
11/15/68 P. Rye Revisions 6, 7 and 8 of COMANCHE
103
11/18/68 F. Martin
COLOSSUS 1A
104
11/18/68 F. Martin
GSOP Changes for COLOSSUS 1A (Rev. 249)
105
11/20/68 M. Hamilton
Changes Made to COLOSSUS (Rev. 237 to 249), or How We Created COL. 1A
106
11/25/68 M. Hamilton
COMANCHE & COLOSSUS 1B Assemblies
107
11/25/68 M. Hamilton
Meeting Held on COMANCHE & COLOSSUS 1B Changes
108
11/25/68 M. Hamilton
Noun Limits in COLOSSUS
109
11/21/68 M. Hamilton
P23 Operation Information
110
11/22/68 I. Johnson, G. Levine
Mission C Prime Rules for Maintaining W-Matrix Validity
111
11/26/68 M. Hamilton
Illegal Program Sequences in COLOSSUS
112
11/27/68 F. Martin
Verb 67 Operation Information
113
12/03/68 M. Hamilton
Meeting Held on COMANCHE & COLOSSUS 1A
114
12/03/68 P. Rye, N. Brodeur
Fresh Start Initialization
115
12/04/68 F. Martin
Avoid Difficulties in Vicinity of the Lunar Sphere of Influence (COL Rev. 237, 249)
116
12/05/68 P. Rye COMANCHE Rev. 9 and 10
117
12/10/68 T. Brand
Suggested Targeting Using P37, P21 and P61 to Secure a 1350NM Entry for Mission C
118
12/06/68 G. Levine
COLOSSUS Guidance Equation Singularities
119
12/09/68 P. Rye COMANCHE Revisions 11 and 12
120
12/09/68 N. Brodeur Rev. 237 References to SQRT, ARCSIN, ARCCOS, ASIN, ACOS
121
12/10/68 T. Brand
P37 Restrictions Resulting from COL Anomaly #53
122
12/11/68 M. Hamilton
COMANCHE Level 4 Testing Assignments for CDH-CSI Sequences
123
12/11/68 M. Hamilton
V83 Operational Information for Rev. 237
124
12/11/68 F. Martin
Return to Earth Operational Information
125
12/13/68 F. Martin
P22 Operation Information for Rev. 237
126
12/13/68 F. Martin
P52, P54 Operation Information
127
12/16/68 W. Ostanek
Preliminary COLOSSUS 2 Level 4 Test Plan for CSI-CDH
128
12/18/68 P. Rye COMANCHE Revs. 13 - 17
129
12/19/68 M. Hamilton
Operational Information on V99 and V97
130
12/23/68 P. Rye Revs. 18 and 19 of COMANCHE
131
01/03/69
P. Rye Revs. 20, 21 and 22 of COMANCHE
132
12/31/68 M. Hamilton
COLOSSUS II (COMANCHE) Testing
133
01/08/69 N. Brodeur
Known Anomalies in Rev. 249
134
01/09/69 F. Martin
COLOSSUS 1A, Level 6 Plan
135
01/10/69 W. Ostanek
Notes on State Vector/W-Matrix Synchronization in COLOSSUS 1A
136
01/13/69 N. Brodeur
Rev. 250 - 252 of COL 1B
137
01/13/69 A. Engel
COL Rev. 249 Level 6 Powered Flight Tests
138
01/13/69 P. Rye Revs. 23 - 27 of COMANCHE
139
01/15/69 M. Hamilton
Discussion of Anomaly COL 69
140 rev 2
03/05/69
Fred H. Martin
Final Content of COLOSSUS 2 (Comanche, Rev. 45)
141
01/15/69 P. Rye
Revs. 28, 29 & 30 of COMANCHE
142
01/15/69 J. Vittek
Mission Action Items for the D Mission
143
01/20/69 J. Turnbull
RCS DAP Orbital Rate
144
01/22/69 M. Hamilton
Operational Information on P40 for Rev. 249
145
01/21/69 P. Rye Revs. 31 - 33 of COMANCHE
146
01/27/69 P. Rye Revs. 34 - 36 of COMANCHE
147
02/03/69 P. Rye Revs. 37 - 39 of COMANCHE
148
01/30/69 J. Turnbull
Orbital Rate + Passive Thermal Control Oper. Information for COLOSSUS 1A(Rev. 249)
149
02/05/69 D. Densmore
As of COMANCHE Rev. 38
150
01/??/69 N. Brodeur
Revs. 253, 254, 255, 256 & 257
151
02/07/69 F. Martin
V35 DSKY Light Test Oper. Information
152
02/07/69 P. Rye Revs. 40 and 41 of COMANCHE
153
02/07/69 S. Copps
CSM Monitoring of the Docked DPS Burn
154
02/18/69 S. Copps
Program Notes Review with D Crew
155
02/20/69 S. Copps
So Called Average G White Paper, Mission Action Item 8
156
02/20/69 T. Crocker
P21 Edit for COMANCHE 39
157
02/21/69 R. Schlundt
COLOSSUS 2 Uprated TVC DAP Test Plan
158
03/03/69 M. Hamilton
Reduction of Coding in COL Attached COL Note #12
159
03/03/69 P. Rye Revisions 42 - 45 of COMANCHE
160
03/05/69 P. Rye Revisions 46 and 47 of COMANCHE
161
03/07/69 P. Rye Revision 48 of COMANCHE
162
03/13/69 P. Rye Revision 49 of COMANCHE
163
03/13/69 J. Saponaro
Accuracy of Verb 83 (Range, Rate Rate, Theta Display)
164
03/17/69 F. Martin Final Content of COLOSSUS 2A COMANCHE Rev. 51
165
03/20/69 F. Martin COLOSSUS 2 and 2A Level 4 Test Summary
166
03/20/69 P. Rye Revisions 50 and 51 of COMANCHE
167
04/08/69 W. Ostanek Use of V96 During State Vector/W Matrix Synchronization
168
03/31/69 I. Johnson
COMANCHE 45 Rendezvous Performance Equals COLOSSUS 249 Rendezvous Perform.
169
04/03/69 J. Stoppelman
Padloads for Testing Mission F & G
170
04/04/69
Saydean Zeldin
MIT Review of Boeing-Houston (MSC) Information Package on CMC Boost Takeover
171
04/15/69
J. Goode
Computation Cycle Timing in TPI, TPM Programs
172
05/06/69
A. Engel, C. Beals, J. Stoppelman
COLOSSUS 2 Level 6 Performance Comparisons
173
04/25/69
J. F. Turnbull Details of How PTC & Orb Rate Procedures Work - Applicable to COLOSSUS 1, 1A, 2 & 2
174
04/25/69
Gerald M. Levine
Transearth MSFN State Vector Updates
175
04/23/69
W. Ostanek
Notes on State Vector/W Matrix Synchronization in COLOSSUS 2, 2A
176
05/02/69
W. Ostanek
Crossing the Sphere in COLOSSUS 2
177
05/06/69
A. Engel, C. Beals Comparisons of COLOSSUS 2 Level 6 Power Flight Runs With/Without Boeing R2 to Lunar Potential Model
178
05/07/69
R. Bairnsfather
Disagreement Between AGC & MAC For Routine 30 in Nearly Circular Orbits
179
05/08/69
Steve Copps COLOSSUS 2D and Subsequent Releases
180
05/09/69
Steve Copps
Techniques for Loading the Landing Site On Board
181
05/19/69
R. Schlundt
CMC Sample Rate During Boost Takeover - Asimulation with 10% TLOSS
182
05/21/69
W. Ostanek
Notes on the Lunar Surface Flag (SURFFLAG) in Colossus 2A
183
05/21/69 E. Muller
Affect of Radar (or the HF Ranging) AGC Interface Problem on F Mission Rendezvous Performance
184
05/23/69 P. Rye
COMANCHE Revisions 52 - 55, Rerelease of COMANCHE Rev. 45 as MANCHE 45
185
05/28/69 J. Stoppelman
Standardization of the Mission G Level 6 EFFORT For the CSM
186
06/02/69 N. Brodeur Optical Marking During POO or P23
187
06/06/69 D. Densmore
Revisions 56 through 58 of COMANCHE
188
06/13/69 S. Copps
SCB Meeting #31 Held on 5 June 1969
189
06/23/69 C. Beals
New S40.13 (Short Burn Logic) for COLOSSUS III
190
06/23/69 D. Densmore Revision 59 and 60 of COMANCHE
191 rev 1
06/30/69
J. Flaherty
Memo Indexes
192
06/26/69
P. Rye Revisions 61 and 62 of COMANCHE
193
07/01/69
T. Brand
P37 Ignition Time Bias
194
07/09/69 P. Rye Use of V83 and V85 (R31, R34) at Altitudes 425 N.M.
195
07/16/69 P. Rye Revisions 63-67 of COMANCHE
196
07/16/69 S. Copps
Final Content of COLOSSUS 2B
197
07/17/69 S. Copps Final Content in Testing of COLOSSUS 2C
198
07/22/69 M. Hamilton Review of Reduction of Coding Approval Procedures
199
07/22/69 N. Brodeur Introduction to COLOSSUS 2C
200
07/14/69 J. Turnbull, W. Widnall
Apollo 10 PTC
201
07/29/69 A. Engel
COLOSSUS 2C (COMANCHE Rev. 67) Padload Relocations
202
07/28/69 R. Bairnsfather
Changes to Entry Monitor System Display in P61 Affecting Crew and Downlist
203
07/31/69
J. F. Turnbull
PCR815/V79/R64/PTC - ORBRATE Routine
204
08/06/69
S. Copps
Saturn DAP Meeting
205
08/07/69
N. W. Brodeur
Revision 1 of Artemis
206
08/11/69
Stephen L. Copps
Optics Calibration for P23
207
08/12/69
A. Engel, W. Ostanek COLOSSUS 2C Testing Summary
208
08/13/69
K. Greene Minutes of Technical Committee Meeting for COLOSSUS 2D and 3
209
08/14/69
A. Engel, B. McCoy H Mission RTCC Compatibility Testing, Test Plan & Schedule (Preliminary)
210 08/14/69 Al Engel, Bruce McCoy RTCC Compatibility Testing at MIT, Current Understanding of Scope, Responsibilities, etc. 211
08/21/69
S. Copps
Technical Committee Meeting of 8/29/69 Resulting from MSC Requirements Meeting of 8/19/69
212 08/11/69 Stephen L. Copps New Requirement for Performing ZERO OPTICS 213
09/10/69
W. F. Ostanek
Bad Other Vehicle State Vector
214
09/11/69
S. Copps
Progress Report on Rate Aided Optics
215
09/22/69
N. Brodeur
Revision 2 of Artemis (COLOSSUS 3)
216
09/24/69
S. Copps
Proposed Contents of COLOSSUS 2D
217
09/24/69
J. F. Turnbull
Performance of R64 Y axis option at a rate = .0507 with CDUX = 180 deg
218
10/02/69
S. David
Configuration Control of RTCC Digital Environment
219
10/03/69
S. Copps
PCR Priority Assignment
220
09/30/69 P. Rye
Revisions 68 & 69 of COMANCHE
221
10/01/69
O. W. Eliassen
CMC Backup Guidance for Saturn V
222
10/08/69
J. Stoppelman, N. Barnert, R. Covelli
T6JOB for COLOSSUS 2C
223
10/13/69
P. Rye Revisions 70 & 71 of COMANCHE
224
10/20/69
N. Brodeur Revision 72 of COMANCHE
225
10/22/69
Ed Olsson
Noun 93 during Pulse Torquing
226
10/27/69 Stephen L. Copps
Final Content and Testing of Colossus 2D
227
11/05/69 J. Goode, N. Brodeur, R. Kiburtz
Automatic Rendezvous Sequence
228
11/10/69 A. Engle, W. Ostanek
Level 3 Tests Conducted on COLOSSUS 2D
229
11/12/69 J. Turnbull
Jet Failed on Detector
230
11/10/69
P. Rye
Revisions 73, 74, and 75 of COMANCHE or "scavenged"
231
11/25/69 O. W. Eliassen
CMC Backup SATURN V (PCR 954)
232
11/21/69 Donald S. Reinke
Work-around for P32 bomb-outs due to insufficient post-CSI or post-CDH pericenter (Alarm codes 601 and 602, respectively)
233
12/01/69 C. Beals
Revision of COLOSSUS Memo #189 (23 June 69) New S40.13 (Short Burn Logic for COLOSSUS 3)
234
12/08/69 R. S. Whittredge
Rate Aided Optics
235
12/15/69 P. Rye Fixed Memory Consideration in COLOSSUS 2E
236
12/16/69 N. Barnert, S. Copps
CSM Automatic Rendezvous Task Description
237
12/15/69
P. Rye
Revisions 76 through 80 of COMANCHE or "scavenged"
238
12/23/69
N. Brodeur
Re-release of COLOSSUS 2D (COMANCHE Rev. 72)
239
12/23/69
P. Rye
Revisions 81 through 83 of COMANCHE or "scavenged"
240 01/08/70 Ken Greene Definition and Usages of PCRs, PCNs, Anomalies & ACBs 241
01/08/70
A. Engel, W. Ostanek COLOSSUS 2D Level 6 Activity (Apollo 13, Mission H2)
242
02/03/70
S. Copps
COLOSSUS 3 Development
243
02/02/70
P. Rye
Revisions 84 through 89 of COMANCHE or "scavenged"
244
02/10/70
P. Rye
Contents of ARTEMIS through Revision 19
245
02/11/70 P. Rye, E. Grace
Erasable (Prelaunch) Performance Test Progra
246
02/10/70 Muller, Kachmar
Procedures for Avoidance of Apollo 12 Pre-CSI CSM Rendezvous Navigation Problem
247
02/12/70 Muller, Kachmar Apollo 12 Pre-CSI CSM Rendezvous Navigation
248
02/10/70 O. W. Eliassen, A. Engel
SATURN Backup Package (PCR 954)
249
02/13/70 O. W. Eliassen, A. Engel COLOSSUS Level 4 Test Plan
250
02/18/70
Sumner Rosenberg
Contents of Artemis from Revision 20 to Revision 24
251
02/23/70 M. Hamilton, P. Rye
AAP Assembly
252
02/26/70
N. W. Brodeur, P. Rye
Revisions 90 through 96 of COMANCHE or "scavenged"
253
02/27/70 M. Hamilton
Powered Flight POODOO's
254
02/20/70 A. Engel, C. Beals
SPS ENG ON Channel Outbit of State Failure
255
02/26/70 A. Engel, C. Beals, V. Demery
Concerning Failure of the SPS ENG ON Channel Flipflop
256
03/02/70 A. Engel, C. Beals, V. Demery SPS ENG ON Channel Outbit "ON" - State Failure
257
03/10/70 A. Engel, P. Rye
LONGCALL Behavior with Negative Δt
258
03/10/70
N. Brodeur
Revisions 97 & 98 of COMANCHE or "scavenged"
259
03/12/70
E. Hume, C. Beals
Apollo 13 DOI Level 6 Perturbation Analysis
260
03/10/70
N. Brodeur
Revisions 25 through 28 of ARTEMIS
261
03/12/70 J. F. Turnbull
Unusual Apollo 12 RCS Firing
262
03/13/70 O. S. Eliassen
Special Boost Glitch Testing on COLOSSUS 2D MANCHE 72 Revision 3
263
03/24/70 E. Hume, C. Beals
Simulation of DOI Perturbations for Apollo 13
264
03/26/70
P. Rye
Revisions 99 through 101 of COLOSSUS or "scavenged"
265
04/06/70
N. Barnert
Universal Tracking
266
04/27/70
N. Brodeur
Revisions 102 through 104 or "scavenged" or another "scavenged"
267
04/28/70
P. Rye
Revisions 29 through 36 of ARTEMIS
268
04/23/70 N. Barnert, A. Engle
All Digital Pre-Level 4 Test Plan for SATURN & BACKUP Package (PCR 954) (Preliminary)
269
05/20/70 N. Barnert, N. Smith
Results of a Universal Tracking (Pointing Option) Study
270
05/28/70 N. Smith
Universal Tracking-Astronaut DSKY Inputs
271
06/03/70
N. Brodeur
The Last of the Comanches
272
06/03/70
N. Brodeur, P. Rye
Revisions 37 through 40 of Artemis
273
06/03/70 S. Copps, K. Greene
Final Content & Testing of COLOSSUS 2E
274
06/10/70 S. Copps
ARTEMIS Discrepancy Reporting Procedure
275
06/10/70 S. Copps, K. Greene COLOSSUS Plans
276
07/02/70
P. Rye
Revisions 1 through 7 of R40ARTMS
277
07/14/70
P. Rye
Revisions 41 through 45 of ARTEMIS. Revision 45 was GOOD.
278 07/22/70 P. Rye, P. Peck Account Numbers 0300 - 0400 280
07/21/70
P. Rye
Revisions 46 through 51 of ARTEMIS
286
09/15/70
N. Brodeur
Revisions 52 through 57 of ARTEMIS
288
09/21/70
N. Brodeur
Revision 58 of ARTEMIS
292
10/08/70
N. Brodeur
Revisions 59 and 60 of ARTEMIS
293 10/09/70 Bill Robertson Summary of Program Change Requests Involving Astrodynamic Coordinate Systems, Ephemerides and Orientations, etc. 296
10/28/70
N. Brodeur
Revisions 61 and 62 of ARTEMIS
301
11/30/70
N. Brodeur
Revision 63 through 67 of ARTEMIS
304
01/04/71
Harry McOuat
Fixed memory hardware related constants in Colossus 2E
306
01/07/71
N. Brodeur
Revisions 68 through 70 of ARTEMIS
310
02/16/71 Dana Densmore DOWNRUPT SEQUENCING, LOST DOWNRUPTS, AND IMPAIRED DOWNLINK INFORMATION 312
03/23/71 Peter Volante, Bill Ostanek Testing on Non Sign Agreement in TEPHEM in Apollo 14 316
04/20/71 William Robertson Limitations in the Astrodynamic Orientation and Ephemeris Routines 326
11/23/71 Margaret Hamilton EMPs 327
11/30/71 Bruce McCoy, Don Millard EMP Control Procedures — Final Iteration
In addition to the "official" memos above that are explicitly marked internally as "COLOSSUS memo #N", we also have other memos of a very similar nature which are not explicitly marked in that way.
Finally, a small list of available software anomaly reports, program change requests (PCRs), and program change notices (PCNs). Note that they are organized by date, and hence may be out of strict numerical order.
Date
Originator
Designation
Program
Description
08/27/68
N. Brodeur
COL-3
Colossus 237
When V40 is selected to call R62, the operator error light is turned on erroneously...
02/20/69
T. Crocker
COM-1 or here
Comanche 44
In lunar environment, velocity and flight path angle are incorrect in N73 associated with P21 (see PCR 730)
02/27/69
M. Hamilton
COM-3 or here
Comanche 44
If a PROCEED response is made to V53 flashing in P53 and P54, the program hangs up as a sleeping job.
03/04/69
F. Martin
COM-4 or here
Comanche 44
VG magnitude is not transferred from P30 to P40, P41.
03/06/69
R. Bairnsfather
COM-32
Comanche 67
In AUGEKUGL, the constant V(21K) represents 21,000 feet/sec but is in the program as 64.000 B7 M/CS. It should be 64.008 B7 M/CS.
03/07/69
P. Rye
COM-6 or here
Comanche 45
Storing of gimbal angles at liftoff for initialization of attitude errors in P11 is not properly restart-protected.
03/13/69
B. Byrne
COM-5 or here
Comanche 44 & 45
Second N88 display (planet option) in P23 requires reload of planet unit vector....
03/14/69
R. Haslam
COM-8 or here
Comanche 45
The second N88 display in P52, P54 (planet option) requires that the unit planet vector be reloaded....
03/18/69
W. Ostanek
COM-9 or here
(Canceled)
Permanent integration of state vectors without W-matrix integration is not restart proof....
03/20/69
R. A. Haslam
COM-7 or here
Comanche 44 & 45
PROCEED response to V50N25 R145 in P51, P53 (please perform celestial body acquisition) fails to initialize gyro compensation
03/27/69
J. M. Reber
COM-11 rev 1 or COM-11
Comanche 45 & 51
Errors in COLOSSUS 2A fixed constants ...
03/28/69
A. Engel
COM-10 or here
Comanche 45?
P40 and P41 calculation of central angle Vg rotation for external ΔV burns may be inaccurate. 04/16/69
M. Hamilton
COM-2 rev 3 or here
Comanche 44
If a P00D00 abort alarms (1206, 1210, 1302, 1501, 1502, 1521, 1204, 1103, 430, 607, 610) takes place ...
05/05/69
Engel
COM-12
Comanche 51 & 55 & 58
The S40.8 code which enables TVC cg-tracking, does not distinguish between pre- and post-switchover (V46, docked) TVC DAP states ...
05/15/69
A. Engel
COM-13
Comanche 45 & 55
The Noun 29 display in V78 (LAUNCHAZ CHANGE) does not permit termination of the extended verb by a V34 response ...
05/15/69
A. Engel
COM-14
Comanche 45 & 55
Only the first and final P17 displays exit properly on V34 response ...
05/28/69
A. Engel
COM-15
Comanche 55
Storing of gimbal angles at liftoff for initialization of attitude errors in P11 is not properly restart protected ...
06/03/69
S. Copps
PCR 815 Effective Colossus 2C
Digital Autopilot Barbecue Mode Routine
07/03/69
S. Copps
COM-31
Comanche 67 & 72
The last sentence of paragraph 5.1.5.1.1 in Section 5 of GSOP ... This statement is invalid as a result of anomaly COM-16 in that it is possible to have both ORBWFLAG and RENDWFLAG set equal to one, which could result in incorrect W-matrix extrapolation during P00. [Editor's note: The underlining is mine; I've added it, because it essentially reiterates the contents of COM-16, of which we do not otherwise have a copy.]
01/20/70
N. Brodeur, P. Rye
COM-33
Comanche 72 rev 3
In KALCMANU STEERING log section, there is a call to subroutine ZEROEROR which is uninhinted thus allowing an interrupt (DAP) to take place in the middle of the zeroing sequence.
05/08/70
Barnert
A-5
Comanche, Artemis
Insert check for coarse align before attempting gyro torquing
08/12/70
Sumner Rosenberg
A-14
Artemis
Set a list of labels = to each location that is in the downlink lists ...
08/12/70
Sumner Rosenberg
A-15
Artemis
Put a list in the downlink log section, using the new instruction "CHECK=" ...
11/05/70
N. Brodeur
A-22
Artemis
Append a (+/-) to relative addresses ...
SKYLARK, if you'll recall, is the AGC software that replaced COLOSSUS (and was adapted from it) in the command modules used for the Apollo-Skylab and Apollo-Soyuz missions. We have the text of a few of the Program Change Requests (PCRs), though unfortunately as of yet, none of the Program Change Notices (PCNs), and just one of the Memos. The table of PCRs and PCNs below mostly comes from Appendix A of Section 2 of the SKYLARK GSOP. (Even so, the GSOP does not list all PCRs and PCNs, and is only current through March 1972.)
It's interesting to note that many of the changes listed in the PCRs are simply deletions of lunar code that would be unnecessary for a CM-to-Skylab mission. I think that a "normal" software-developer perspective on this would be that deletion of the working code, even if the code itself is unnecessary, represents more of a risk in terms of creating undetected breakage than simply leaving the code in place and not using it would be. However, in working with higher-reliability code — disclaimer: my only familiarity with such matters is in working with airborne code in the U.S., which is currently governed by a document called RTCA DO-178C, and thus I don't really know what they thought about it in 1970 in the space biz — there is a concept of "dead code", i.e., code that is never executed under the software requirements, and specifically never tested; the dead code must be completely removed from software beyond the absolute lowest level of criticality. The theory behind this is that if somehow that dead code actually did manage to be executed for some reason, then the result would be bad. I imagine that's the theory behind the removal in SKYLARK as well: i.e., the risk of executing bad code is worse than the risk of undetected breakage. On the other hand, I suppose the removal could be just a matter of trying to reduce the cost, by physically removing a handful of memory cores and their associated wiring. I wonder what the actual cost tradeoff would have been between lifting those cores into space vs all of the development and testing time associated with the removal?
I presume that the terms "SKYLARK Memo" and "SKYLAB Memo" are synonymous, but we don't really have enough of them to draw any conclusions on the matter.
Memo, PCR, or PCN #
Written
Approved
Author
Scope
Subject
SKYLARK Memo (unnumbered)
10/9/70 n/a
William M. Robertson
n/a
Summary of Program Change Requests Involving Astrodynamic
Coordinate Systems, Ephemerides and Orientations, etc.
PCR SL003
2/25/70
1/28/71
R. O. Nobles
Code and GSOP
Improved short-burn logic to desensitize with respect to variations in the SPS engine.
PCR SL004
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded verb 94 (cislunar tracking).
PCR SL005
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded verb 59 (optics calibration mark).
PCR SL006
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded verb 52 (offset landing site mark).
PCR SL007
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded verbs 44 and 45 (set and reset of surface flag).
PCR SL008
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded routine 57 (optics calibration routine).
PCR SL009
3/3/70
1/28/71
S. A. Gorman
GSOP only
Deletion of unneeded routine 33 (CMC-LGC clock synchronization).
PCR SL010
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded routine 05 (S-band antenna routine) and verb 64.
PCR SL011
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded programs 72-76.
PCR SL012
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded programs 65 (up control) and 66 (ballistic).
PCR SL013
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded option 4 (lunar surface alignment) from programs 52 and 54.
PCR SL014
?
?
?
Code and GSOP
Program 39 deletion.
PCR SL015
?
?
?
Code and GSOP
Program 38 deletion
PCR SL016
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded program 37 (return-to-earth).
PCR SL017
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded program 23 (cislunar midcourse navigation).
PCR SL018
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of unneeded program 22 (orbital navigation).
PCR SL019
?
?
?
Code and GSOP
Program 24 deletion.
PCR SL021
3/3/70
1/28/71
S. A. Gorman
Code and GSOP
Deletion of program 32 (CSI) due to development of new targeting procedures (probably PCR SL030 below).
PCR SL022
2/26/70
1/28/71
Bedford F. Cockrell
Code and GSOP
Change of a constant to desensitize with respect to gravitational perturbation by the moon.
PCR SL025
2/26/70
1/28/71
Bedford F. Cockrell
Code and GSOP
Extend VHF range beyond limit of 327.67 nautical miles.
PCR SL030
2/27/70
1/28/71
R. R. Regelbrugge
Code and GSOP
Addition of NCC maneuver computation capability.
PCR SL032
6/10/70
1/28/71
M. C. Contella
Code and GSOP
Incorporation of smoothing filter for VHF range rate computation and display.
PCR SL033
7/29/70
1/28/71
Bedford F. Cockrell
Code and GSOP
Use of fixed coordinate system to avoid mission-by-mission coordinate-system changes.
SKYLAB Memo 3-70
7/29/70
n/a
William M. Robertson
n/a
Detailed software-design data regarding PCR SL033.
PCR SL035
7/7/70
1/28/71
S. G. Bales
Code and GSOP
Addition of TEPHEM to telemetry downlist.
PCR SL036
7/9/70
1/28/71
C. B. Parker
Code and GSOP
New (backup) method of specifying attitude data in case of star tracker failure.
SKYLARK Memo 27
4/20/71
n/a
William Robertson
n/a
Limitations in the Astrodynamic Orientation and Ephemeris Routines PCR SL040
?
?
?
?
Skylab digital autopilot
PCR SL042
?
?
?
?
Skylab four maneuver DKI sequence
PCR SL048
?
?
?
?
Conversion of RCS DAP phase plane fixed memory constants of erasable load.
PCR SL051 REV 1
?
?
?
Code and GSOP
Skylark downlist changes
PCR SL400
?
?
?
Code and GSOP
Program 15 deletion
PCR SL402
?
?
?
Code and GSOP
Eliminate 481 day TEPHEM limitation in Lunar-Solar ephemerides routine
PCR SL405
?
?
?
?
Transform optics angles to tracking angles.
PCN SL409
?
?
?
Code and GSOP
Modification to PCR SL022
PCN SL410
?
?
?
Code and GSOP
Delete Lunar capability
PCN SL411
?
?
?
Code and GSOP
Delete HAM targetting program
PCN SL412
?
?
?
Code and GSOP
Delete ECSTEER
PCR SL413
?
?
?
?
ATM orientation determination program (P50)
PCR SL414
?
?
?
?
Docked alignment capability in P51
PCR SL415
?
?
?
?
Docked alignment capability in P52 PCR SL416
?
?
?
Code and GSOP
Add gyro trim to R50
PCN SL417
?
?
?
Code and GSOP
Deletion of 9 dimensional capability
PCN SL422
?
?
?
Code and GSOP
Initialize rendezvous navigation to update the CSM state vector
PCR SL423
?
?
?
Code and GSOP
Change conic to precision integration in all rendezvous targetting programs.
PCR SL424
?
?
?
Code and GSOP
Improve minkey gyro torquing logic
PCR SL428
?
?
?
?
Modification of Skylark Memo #14: Preliminary Skylab Rendezvous Targeting Plan for the Skylab GSOP
PCR SL431
?
?
?
?
R04 roll preference specification
PCR SL434
?
?
?
Code and GSOP
Correct αATM in P50.
PCN SL435
?
?
?
Code and GSOP
Do not automatically take VHF in P20
PCN SL436
?
?
?
Code and GSOP
Nominal use of ATM sources in P52 and P54.
PCN SL438
?
?
?
Code and GSOP
Incorrect star tracker angle in P55.
PCR SL439 REV 1
?
?
?
Code and GSOP
VHF range rate filter enable/disable by extended verb.
PCN SL442
?
?
?
Code and GSOP
Modification to R22
PCR SL448
?
?
?
?
Modification no. 4 to Skylark memo no. 14
PCR SL449
?
?
?
?
Forced firings for docked DAP auto maneuvers
PCR SL452
?
?
?
?
Precision integration for V90
PCR SL454
?
?
?
?
Docked DAP alarm codes
PCN SL455
?
?
?
Code and GSOP
Change to P35, P36 and R00 to fix anomaly ART 07
PCN SL456
?
?
?
Code and GSOP
Zeroing HOLDFLAG
PCR SL459
?
?
?
?
VHFR changes
PCR SL464
?
?
?
Code and GSOP
Set NN = 0 in P35
PCN SL467
?
?
?
Code and GSOP
Change VHFTIME to MARKTIME on the powered downlist.
The Software Control Board (or perhaps Software Change Board, or
perhaps Software Configuration Board, or even Software
Configuration Control Board ... I'm not really sure, but does it
really make a difference?) meetings were meetings held between the
MIT Instrumentation Lab and the Manned Spacecraft Center, and I
presume other parties as needed, to approve or disapprove PCRs
(Program Change Requests) and PCNs (Program Change Notices), as
well as to report the closure of such items. As such, they
can serve (for our purposes) to fill in gaps in LUMINARY Memo or
COLOSSUS Memo series in order to track AGC revision-to-revision
changes. We don't have many of these, but Don Eyles has
given us a few in order to help understand some of the changes in
Luminary 131 for Apollo 13 that weren't tracked by the LUMINARY
Memos.
Various sections above cover problem and change reports for a
variety of specific areas of implementation or responsibility
(LUMINARY, SKYLARK, SCB resolution, etc.). Reports that
don't obviously fit into any of those areas of specification are
collected in this section.
In this section, we collect documents whose primary interest for
us is that they discuss the disposition of specific AGC/DSKY
units, and/or refer to them or their constituent modules
specifically in terms of their part numbers and serial
numbers. In other words, anything that allows us to discuss
what AGC/DSKY units or their constituent parts (like software)
were used for what purposes. There are other documents which
also contain such information but which were cataloged before this
specific category of documents was invented, so it may take a
while before all such information is linked here.
These items are alphabetical by author, though the "author" is
sometimes an organization when no individual authors are listed.
The document was prepared while I was working for Al Hopkins and Ray Alonso at the Instrumentation Laboratory and describes the analysis of the crux of a proposed backup system if the AGC became overloaded during the LEM trajectory. Although the backup method described was never used, the document shows the type of analysis that went on "behind the scenes" in support of the entire mission.
Note: The document scans listed in this section are now obsolete for most practical purposes, because far better scans of the documents have since been provided. Simply use the engineering-drawing search engine to find the "good" scans for most of them. (Document MH01-01380-216 is not in the search engine, but can be found by rummaging through the unindexed scans of North American Aviation Interface Revision Notices.) The material in this section (specifically, the inferior scans) has been retained anyway, but should be regarded as a last resort for trying to resolve legibility problems. I have not changed the explanations accompanying the document links below, even though they do not fully reflect the current situation. The explanations, however, do contain valuable information about how to interpret the "good" scans as well as the "bad" ones. Besides the documents listed in this section, many other documents of a similar nature exist among the engineering-drawing scans, principally though not exclusively in "aperture card" Box 431, Box 433, Box 434, Box 435, and Box 436. You are invited to browse the indices of those boxes and index-pages of all other aperture-card boxes for documents of interest that don't appear elsewhere in this document-library page. However, your searches for such documents will generally be assisted greatly by knowing the desired document number.
This is an unusual section, in that it categorizes documents according where they came from and the technique used to digitize them, rather than the contents of the documents as such. They are collected here, with an apology (in the old sense of the term) that I'm giving once (here!) because I don't care to repeat it over and over again.
In brief, a number of documents were encountered at NARA Southwest that had been converted to "microform" that were deemed significant enough to reproduce for you, but for which I personally have chosen an inferior method of digitization, due to limitations of time and money. I will say that it's better having these scans than not, in lieu of having better ones, but there's no doubt that their quality is shockingly poor. They are mostly, but not entirely, legible. With effort. Perhaps it's worth noting that all of the scans in this section are expected to be replaced by much, much higher-quality scans, probably before the end of 2021.
A fuller explanation of these microform "aperture cards" can be found on our "Documentation Quest!" page, but as a brief example, imagine a 400-page document on aperture cards. At current prices, NARA would be willing to digitize it for you for $1600, or you could go to the facility personally and make a relatively high-quality scan using NARA's equipment for about $160 (plus 12 hours of your own time), or you could go there and make a low-quality scan for free with your own flatbed scanner for $0 (plus 3 hours of your own time). Now, I have scanned many, many engineering drawings from NARA aperture cards using the mid-price option, because it's reasonably cost-effective to do so, and you can see those on the MIT/IL engineering-drawing index page. But for longer documents, for obvious reasons, I chose the free option.
Aperture cards hold photographic negatives, and the document scans I've made from them are presented as-is. I.e., as negatives. They could be easily converted to positives and post-processed with brightness and contrast adjustments that would make them easier to read, but I've chosen not to do so in most cases, because I preferred to get the scans into public view rather than hold onto them for however long it would take to work out the perfect post-processing for them. Plus, most such post-processing results in image rot that I prefer not to incur at this stage. The fact that I've not done this post-processing means that these scans will be perceived as being of even lower quality than they actually are. Perhaps you can figure out the perfect adjustments for me, and let me know how to do it the best way! But there are also true quality issues, in which portions of some scans appear blurry and out of focus, which I presently don't understand. Perhaps some pages will require rescanning in the future for legibility reasons.
Another fun feature of these documents is that rather than containing a nice, contiguous sequence of pages, we instead provide all (or all available) revisions of the document, one after the other: rev "-", followed by rev "A", followed by rev "B", and so on. Consequently, the sequence of pages will often have holes and duplications, though hopefully one could form a complete final-revision document from all of the pages if one were so inclined. If you are so inclined, I'd be happy to accept such a version from you.
Finally, since these documents are being provided only in their "raw" form, I've not attempted to turn them into nice, tidy PDFs, so at the moment, you can see these scans only in their raw forms at our Internet Archive site.
All right, enough of the apology! Here, finally, is a list of the actual documents:
See also: AGC
Electrical Schematics.
Note: For this section only, the icon
normally present on newly-added documents has been omitted.
These documents relate primarily to the Saturn rockets, but one
notable feature is that chapter 2 of each document provides a
detailed mission timeline for events insofar as they relate to the
various stages of the rockets.
Note that this section doesn't include things like GSOP
documents, Operational Databooks, etc., which have their own
sections above, but is simply a catch-all for everything I haven't
already listed that's mission specific or specific to a mission
class.
Max Faget was a fanatical advocate of the optical tracker as the primary rendezvous navigation sensor. If he had had his way there would have been no rendezvous radar. This was an undocumented chapter in the Apollo program known to those of us who participated as the Rendezvous Wars. Under our tutelage, supported by extensive in-house Monte-Carlo analyses, the Astronaut Office took an uncompromising position on behalf of the radar as the primary rendezvous navigation system.
The wars continued into the Shuttle program, and were lost by our side because the FOD was able to make the case that they could support all rendezvous operations with ground-based tracking, and there was therefore no argument for autonomous on-board capability. Max got his way on the Shuttle, there was no rendezvous radar. By that time I was back in Houston working for a small company under contract to MPAD for orbital operations analysis. I got fired for refusing to lie to Draper about the availability of reference mission data to support some independent analysis they were doing for my former colleagues in SED. Thus ended my involvement in the wars, and I've always treasured those memories.
This document contains nomographs for computing the TPI and M/C maneuvers using LM boresight elevation angle measurements, and raw rendezvous radar data from the tape-meter readout. During the months prior to Apollo 11, I was able to use the GN&C analysis program in Monte-Carlo mode to construct computation tables for the CDH and CSI burns. This was done by perturbing the trajectory about the nominal, and developing power-series expansion functions for the maneuvers in terms of the resulting radar range and range-rate perturbations, obtained from measurements at fixed intervals before each burn. We wanted to be able to verify the on-board maneuver solutions independently of the ground, or in extremis do without them altogether, and still carry out the rendezvous as long as we had an operating radar. Hence our fanatical determination to have the radar as the primary rendezvous sensor.
I'm not sure these nomographic and tabular backups were known to the Instrumentation Lab. They were brute force, but they worked. Never needed, though; the IL software and systems were iron-bottomed and gold-plated... [ellipsis Clark's]
- R-649, "The Apollo Rendezvous Navigation Filter Theory, Description and Performance", Volume 1 of 2, by Eugene S. Muller, Jr., and Peter M. Cachmar, June 1970
- "Crew Procedures Orbital Guidance and Navigation Program, Navigation Section"
Flowchart Number |
Nature of Difference |
---|---|
FC-2100 |
Changed |
FC-2140 |
Changed |
FC-2220 |
Only in 2D |
FC-2235 |
Only in 2D |
FC-2242 |
Changed |
FC-2280 |
Only in 2D |
FC-2283 |
Only in 2D |
FC-2290 |
Changed |
FC-2300 |
Changed |
FC-2310 |
Only in 2C |
FC-2363 |
Only in 2D |
FC-2370 |
Changed |
FC-2390 |
Changed |
FC-2430 |
Changed |
FC-2440 |
Changed |
FC-2595 |
Only in 2C |
FC-2600 |
Changed |
FC-2631 |
Changed |
FC-2640 |
Only in 2D |
FC-2641 |
Only in 2D |
FC-2642 |
Changed |
FC-2650 |
Changed |
FC-2670 |
Changed |
FC-2682 |
Only in 2C |
FC-2683 |
Changed |
FC-2710 |
Only in 2C |
FC-2730 |
Changed |
FC-2760 |
Changed |
Initial March 1962 |
Revision A July 1962 |
Revision 2 November 1962 |
Revision 3 December 1962 |
Revision 4 January 1963 |
Revision 5 February 1963 |
Revision
6 March 1963 |
Revision
7 April 1963 |
Revision
8 May 1963 |
Revision 9 June 1963 |
Revision 10 July 1963 |
Revision 11 August 1963 |
Revision
12 September 1963 |
Revision
13 October 1963 |
Revision
14 November 1963 |
Revision
15 December 1963 |
Revision
16 January 1964 |
Revision
17 February 1964 |
Revision
18 March 1964 |
Revision
19 April 1964 |
Revision
20 May 1964 |
Revision
21 June 1964 |
Revision
22 July 1964 |
Revision
23 August 1964 |
Revision
24 September 1964 |
Revision
25 October 1964 |
Revision
26 November 1964 |
Revision
27 December 1964 |
Revision
28 January 1965 |
Revision
29 February 1965 |
Revision
30 March 1965 |
Revision
31 April 1965 |
Revision
32 May 1965 |
Revision 33 June 1965 |
Revision 34 July 1965 |
Revision 35 August 1965 |
Revision 36 September 1965 |
Revision 37 October 1965 |
Revision 38 November 1965 |
Revision 39 December 1965 |
Revision 40 January 1966 |
Revision 41 February 1966 |
Revision 42 March 1966 |
Revision 43 April 1966 |
Revision 44 May 1966 |
Revision 45 June 1966 |
Revision 46 July 1966 |
Revision 47 August 1966 |
Revision 48 September 1966 |
Revision 49 January 1967 |
Revision 50 April 1967 |
Revision 51 June 1967 |
Revision 52 August 1967 |
Revision 53 October 1967 |
Revision 54 December 1967 |
Revision 55 February 1968 |
Revision 56 April 1968 |
Revision 57 June 1968 |
Revision 58 August 1968 |
Revision 59 October 1968 |
Revision 60 January 1969 |
Revision 61 May 1969 |
The title of this section is a little misleading, in that many
people, upon seeing the lead-in "sound and fury ...", would
immediately fill in the ending "... signifying nothing".
I certainly don't intend to imply that the memos in this section
"signify nothing", but you may nevertheless have to put in a
little more effort to determine just what they do signify
within the context of AGC development. That's because these
memos share some common characteristics that add to your
confusion, such as:
And there may be individually-complicating features as
well. One of the memos, for example, was written on April
Fools' Day. Is it fooling, or is it not? I can't
say. What I can say is that if you decode the memos
properly, it's possible that there may be lessons to be learned
from them.
In this section, we provide some stuff that doesn't directly pertain to any of the computers in Apollo or Gemini. But if the original developers give me interesting and sometimes unique material, or if I find interesting material related to them, I'd like to present it anyway.
Apollo Telescope Mission |
Saturn I Workshop |
Apollo Telescope Mission + Saturn I Workshop |
= Apollo Telescope Mount (ATM) also known as SKYLAB |