This memo is to describe the gyro pulse torque realign capability being added to the IMU Realign Program in Luminary and Colossus, Jr. Most of it is quoted word for word from a memo Steve Copps (MIT) wrote last February proposing it….
Category: Uncategorised
Progress Report – RTCC program development – Review of AS-258(!) requirements
This lengthy memorandum deals with the recently completed review of AS-258(!) RTCC computer program requirements. I hasten to say, many other areas remain to be examined in our effort to bring the over-all job supported by the MCC-H to within acceptable bounds and to assure economical RTCC usage. Of course, specific actions resulting from our…
There will be no S-IVB ephemeris in the RTCC after separation
We have had a couple of meetings of FCD, FSD, MPAD and IBM people to discuss some of the RTCC computer program requirements for the lunar landing missions. One item coming out of these discussions, which may interest you, is that there is currently no intention of carrying an ephemeris for the S-IVB after it…
Significant modifications currently planned in the Apollo Spacecraft Computer Programs
Quite a number of decisions have been obtained from the Apollo Program Manager affecting the development of the AS-258 and AS-504 spacecraft computer programs which I am recording here for my own later reference. As usual, I will send it along to you on the chance that you might be interested….
[META] Site update
Greetings to my handful of regulars and I hope you have been finding the site useful and interesting. As of this writing, there are 240 historical Apollo documents from the “Tindallgrams” collection available for viewing, with approximate 230 remaining in the queue. I am tentatively aiming to have these remaining documents transcribed by the end…
AS-504 Spacecraft Computer Programs will be able to support earth orbital and lunar missions
At one time I had sort of expected that we would have to maintain two basic programs for each of the Apollo spacecraft – one for earth orbital operations and one for lunar operations. The former would probably be a refinement of the AS-258 programs and the latter of the AS-504 programs. Further investigation, primarily…
Head-up and locked DAP-wise
Bob, it looks like I’ve had my head up and locked for the last year or so along with a few of my cronies over here, because we sure did misunderstand the division of responsibilities. And I am sorry about that because I am sure it must have contributed substantially to our problems….
Spacecraft computer program status
Reference is made to MSC memorandum 67-FM-T-52, “Spacecraft computer program status – particularly Sundisk,” dated August 1, 1967….
Current plans for downlink of LM radar data
There have been so any questions asked about what rendezvous and landing radar data will be on the LGC downlink, I asked Paul Stull to fill out the attached table which, as you see, he has done. He has greatly emphasized that this whole business is still ill-defined and, therefore, the numbers given must be…
Spacecraft computer program status
Here’s another of my irregular updates on what’s going on in the business of spacecraft computer program development….