On April 3 we had an Ascent Mission Techniques meeting – the first in a long time. This memo is mostly to express some rather general observations….
Category: Burn monitoring
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….
F/G Mission Techniques – except for the lunar orbit phase – are ready to eat
Some of the decisions and open items that came out of our F/G Mission Techniques meetings in late January are listed in this memo. Basically, I would say that all mission phases aside from the lunar orbit activity are very well understood at this time – primarily as a result of the C’ mission -…
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,…
D Maneuver Monitoring Mission Techniques
On November 4 we had our first-and-last D Maneuver Monitoring Mission Techniques meeting. In addition to all interested MSC organizations, it was attended by MIT, NR, TRW, and GAEC. We spent the day going through all of the SPS maneuvers both docked and undocked, except for those associated with the rendezvous and the docked DPS…
A small change in CSM DOI confirmation procedures
We ran into a little snag on confirming the CSM DOI maneuver which has forced us to change the mission technique a little bit and I think you should know about it….
F/G Rendezvous Mission Techniques – mostly F
As part of F/G Torture Week, we spent Thursday, January 30 on the rendezvous. Overall, I would say this mission phase is in pretty good shape with only a few unresolved items that we know about right now. I would like to tabulate here a bunch of odds and ends we agreed to at this…
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…
Apollo 13 Odds and Ends Meeting
This memo is to notify you of an Odds and Ends Mission Techniques meeting for Apollo 13 on December 5, 1969, starting at 9 a.m., Room 378 of Building 4. Very likely it will be the last big get together we will have for that mission. Generally, subjects to be discussed result from the effect…
Two-stage LOI looks good after C’
Just like in other fields of endeavor, it always seems possible to use actual flight results to prove how smart you were before the flight. I am writing this note to crow about how C’ proved we “done right” in planning a two-stage LOI….