As part of the Apollo software team’s contribution in the search for extra LM hover time and/or payload capability, they are vigorously working on the development of a new descent guidance and throttle control technique. The pay off could be impressive compared to things like trying to decrease LM weight. Specifically, a ΔV improvement on…
First meeting of the Descent Phase Mission Techniques Working Group
This memo is to request your participation in the detailed development of the Apollo Mission Techniques for the Descent phase of the lunar landing mission. We are setting up a small working group of the following composition to do this job:…
Apollo 13 Mission Techniques are in good shape
On December 5 we had what I expect to be our last full-blown Mission Techniques meeting for Apollo 13. This memo is to tell you about it….
Apollo Spacecraft Software Configuration Control Board meeting number 32
On October 9 Chris Kraft convened the first Software Configuration Board meeting since June 5 at MIT. We had a real pot full of PCR’s to discuss, some of which were approved for Apollo 13, some for 14, and some were put in a category in which MIT was to continue development to a point…
Mission H-2 and Subsequent Lunar Orbit Activities
Attached is your copy of the Apollo Mission Techniques Document for the Mission H-2 and Subsequent Lunar Orbit Activities….
Status report on the “P66” fix
There were some things about the terminal descent on the last mission that kind of spooked a lot of people. One of the things suggested as a result of this was to add a capability to the LM guidance and control system which would assist the crew during the last 100 feet or so of…
Invitation to an Apollo 13 Lunar Orbit Mission Techniques meeting
“The time has come” the walrus said, “to talk of many things.” This classic quotation apparently now applies to the Apollo 13 lunar orbit mission techniques and this walrus is suggesting Tuesday, September 23. Bob Lindsay has subjected his flight plan to three iterations already and it’s shaping up nicely; the FOD guys have a…
Notice of a catch-all Apollo 12 Mission Techniques meeting
We have scheduled a Mission Techniques meeting on Monday, September 15, 1969, to go over the Apollo 12 flight for the “last” time. Although most of the discussion will probably deal with the landing and rendezvous phases, we would like to clean up all open items regardless of mission phase….
Apollo 12 Descent – Final comments
There are a couple of new developments you should know about the Apollo 12 descent….
What can be done about the AOT?
One of the largest error sources affecting precision landing on the moon is the LM platform alignment accuracy at PDI. The AOT is adequate to fly an Apollo 11 type mission but it is simply not designed to support precise landings; AOT alignments, as currently carried out, leave something to be desired. The result is…