This is my belated report on the July 9 ASCCB meeting. It was reported that Sundance Assembly 302 was delivered to Raytheon for rope manufacture on July 3….
Month: July 1968
No 15 minute constraint for Lunar Ascent Guidance
The Luminary GSOP indicated that it is necessary for the astronaut to call up the Ascent Guidance Program (P22) at least 15 minutes prior to lift off. This, of course, is not consistent with our desire to be able to use P12 if we get a No Go for lunar stay approximately 10 minutes after…
LM Ascent lift-off time can be determined by the crew
Some months ago we submitted a PCR to remove the pre-Ascent targeting program (P10) from Luminary and this was done. This action was based on an assumption that a simple crew procedure could be developed for doing the same job, in the event of loss of communications, making the rather complicated computer program unnecessary. The…
The LM can handle big Descent plane changes but required protection against APS abort fuel depletion
We have recently verified that the LM has a substantial capability to translate out of its initial orbital plane during powered Descent at very little cost. That is, whereas previously a limit of 0.3° had been quoted, it now appears that 1° or more is probably possible without effecting the performance of the guidance equations,…
“C” Mission Retrofire and Reentry Mission Techniques meeting
On Friday morning, July 19, we had a “C” Mission Retrofire and Reentry Mission Techniques meeting to clean up some open items. It is evident that a distribution of correction pages to our previously distributed Mission Techniques document will be inadequate and it is our current plan to republish the whole book. Some of the…
Guidance and control action limits
In the development of mission techniques, we are establishing quite a large number of parameter limits which are used to determine how the guidance and control systems will be used (for example, minotoring attitude during as SPS burn wherein if the attitude exceeds __10°__ or the attitude rate exceeds __5°__ per second, the crew would…
July 19 “C” Rendezvous Mission Techniques meeting
Although most of the things discussed in our Friday, July 19 “C” Rendezvous Mission Techniques meeting are not of general interest, there were a couple of things I would like to let you know about….
“D” Rendezvous
A great many things were discussed and resolved at the July 22 “D” Rendezvous Mission Techniques meeting. They will all be fully recorded in the minutes. There were three items, however, I would like to call particular attention to at this time by this memo….
“D” RENDEZVOUS MISSION TECHNIQUES OPEN ITEM LIST
July 25, 1968…