On April 20 we had our first meeting to establish spacecraft computer program requirements for the AAP missions. Sufficient time will soon have elapsed to permit substantial progress on the action items issued at that meeting making it worthwhile to gather again. Accordingly, you are invited to attend such a meeting at 9:00 a.m., May…
Category: G
CSM Rescue Mission Techniques are complete and clean
On June 9 we had our final Mission Techniques meeting on CSM Rescue. I am pleased to report that this stuff appears to be in very good shape. After much hard work by many people, the CSM rescue rendezvous plans shake down to only two basic profiles. Each of these has minor modifications to account…
DPS low level propellant light
During our final review of the Descent Mission Techniques on May 28, GAEC presented a comprehensive review of the low level DPS propellant light – its operation and accuracy. The most significant piece of information coming from this was that we are assured of about 98 seconds more DPS operation at the hover thrust level…
Ascent with busted guidance and control systems
On June 11 we had a Mission Techniques meeting to discuss manual ascent from the lunar surface. The term manual ascent, though, is somewhat misleading since most of our discussion had to do with how the guidance systems should be operated if certain of its components failed prior to ascent. In summary, I think everyone…
Some things about Ascent from the moon
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….
G Rendezvous Navigation OJT is proposed
CMP Mike Collins called the other day to ask if there is any reason why he should not do active rendezvous navigation between DOI and PDI on the G mission. That is, he would like to run P20 incorporating sextant and VHF ranging data to update the LM state vector in the CMC. His primary…
F and G cis-lunar midcourse correction scheduling
This memo is to make sure everyone is aware that we are scheduling the final midcourse corrections before LOS and Entry differently than on C’….
How we will handle the effect of mascons on the LM lunar surface gravity alignments
What do we do if one of those big damn lumps of gold is buried so near the LM that it screws up our gravity alignment on the lunar surface? Without exception, the calculations of all the various far-flung experts predict that mascons should have no significant effect on our lunar surface gravity alignments. In…
C’ Transearth Midcourse Correction (MCC) and Entry Mission Techniques
On September 13, we conducted a review of the Transearth MCC and Entry Mission Techniques for a lunar mission. Although, originally developed for an F or G type mission, the discussion was almost completely devoted to C’. Participation included all interested MSC organizations (including the C’ flight crew) as well as representatives from North American,…
F and G Lunar Orbital operations – mostly pre-DOI LM activation stuff
On January 10 we had an F and G Mission Techniques meeting dealing mostly with Lunar Orbital operations, which I would like to record with this thing….