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,…
Month: December 1967
Mission C DAP initialization procedures
In a memo dated November 28, you recommend that “DAP initialization procedures for Mission G be established where either crew input requirements are eliminated entirely, or restricted at most to one inertia update following the largest SPS burn.” I am writing you this note to let you know that what has been planned is entirely…
Do you want a program to calibrate the COAS?
Charlie, I am afraid I goofed up when I sent the attached memo out open-loop. Most likely nothing is getting done. I am sending this over to you in case you would like to get one of your people to initiate the standard FCD procedure to have something implemented….
Spacecraft computer program newsletter
This memorandum is to make sure you are up to date on spacecraft computer programs. As you undoubtedly know, an Apollo Software Configuration Control Board, chaired by Chris Kraft, has been established. I am the MPAD representative and Stan Mann is the alternate. There have been three meetings so far in which we have discussed…
No need to perform lunar landmark orbit determination
A number of Trajectory Control Data Priority meetings have been held on the Descent phase of the lunar landing mission. A basic question arose early in these meetings regarding lunar orbit landmark tracking with the command module sextant and/or telescope. It was necessary to decide whether or not such observations are required for use in…
Third Trajectory Control Data Priority Meeting for Spacecraft 101
Reference memo 67-PA-T-110A dated December 4, 1967. The Trajectory Control Data Priority meeting which was scheduled for December 20, 1967, had been changed to January 10, 1968, at 9:00 a.m., Room 966, Building 2 of MSC….
Lunar lift off shall be planned at discrete times only.
During our December 21 Ascent Phase Data Priority meeting we concluded that a continuous launch window for lift off from the lunar surface is not a requirement. That is, all mission planning, procedures and program development associated with the nominal lunar landing mission should be based on the assumption that one or more discrete lift…
Rendezvous meeting reminder
This note is to remind you of our Rendezvous meetings on January 3, 1968. In the morning we hope to discuss Rendezvous on the “C” mission starting at 9:00 a.m. and in the afternoon Rendezvous on the “D” mission starting about 1:00pm….
LM rendezvous radar during Ascent is about to go over the brink.
It turns out providing justification for obtaining LM rendezvous radar data during Ascent from the lunar surface is as difficult as getting the data itself. This memorandum is to let you know that unless some sharp cookie comes along with sufficient justification we ain’t gonna get it!…
Lunar Countdown Timeline Test on LTA-8
The width of the launch window from the lunar surface is decided by:…