This note is to back up our telephone conversation (2/5/67) in which I requested you to prepare our recommendation as to how the AGC should be used during the simulated translunar injection maneuver on AS-503. It’s certain the crew will want to monitor the progress of this large SIVB maneuver, even though it’s controlled by…
Category: Burn monitoring
Crew monitoring of the LOI maneuver
On August 3 we had an informal meeting to talk about crew monitoring of the Lunar Orbit Insertion (LOI) maneuver. The subject came up in connection with Jim McDivitt’s preparation for the STAC presentation. I’m writing this note because we tentatively agreed on some fairly basic points with regard to how we might use the…
Immediate restart of the SPS engine under PGNCS control
This memo is in response to your question as to whether there was anything in the spacecraft computer that would prevent attempting to restart the SPS engine immediately if it shut down prematurely for some reason. I passed this question on to the Guidance and Performance Branch (MPAD). The following paragraphs are quoted almost verbatim…
Current status on the LM DPS engine gimbal caution light problem
This memorandum is to report the results of a very brief investigation into the adequacy of the LM Descent Propulsion System (DPS) engine gimbal caution light. Briefly, this light comes on if a difference between the gimbal drive signal and the gimbal response signal from the Y or Z axis trim malfunction logic is sensed….
It is proposed that we plan a two step LOI maneuver
For the past several months there has been considerable discussion regarding the question of whether we should perform the lunar orbit insertion (LOI) maneuver as a single burn or if it should be made in two steps. This is an important matter to resolve since it has impact on RTCC program development, guidance systems targeting,…
Descent Orbit Insertion (DOI) monitoring and abort procedures are proposed
Something rather interesting came out of Floyd Bennett’s April ?? Descent Mission Techniques meeting that I would like to pass around. It has to do with monitoring the DOI maneuver….
Recommendation to retain the Two-Stage Lunar Orbit Insertion (LOI) Maneuver
This memorandum documents the results of our review of the two-stage LOI maneuver which you requested as a result of a recent OMSF suggestion that it might be preferable to return to a single burn plan. Participation in this review involved all operational elements of MSC concerned in this matter. The conclusions are unanimous….
C’ Mission Techniques
Attached are a list of ground rules and working agreements I compiled from my notes taken at the September 13 and 14 Mission Techniques meetings and the September 20 Lunar Abort meeting, all on the C’ mission. This list is far from complete. Basically, these items are only the changes and additions to the material…
C’ Earth Orbit and TLI Mission Techniques Open Items
It appears we have the Earth Orbit and TLI Mission Techniques for the C’ pretty well under control. The only two significant open items that I know of deal with the optics check and the crew procedures for protecting against an SIVB engine cutoff failure during TLI….
C Prime Maneuver Monitoring Mission Techniques into cement
On November 2 we went over the C’ Maneuver Monitoring Mission Techniques for the last time – that is, we all hope and expect it’s “final.” Although, the detailed procedures will be documented elsewhere, I would like to describe the new things we established at this meeting. They deal primarily with overburn protection by manual…