I think we have pretty well established how to handle a communication loss situation on the F and G missions. In effect, we have defined which Block data must be sent and what onboard cis-lunar navigation needs to be carried out. In both cases, of course, it is possible to cut back substantially from the…
Category: Apollo 10
Spacecraft guidance for TLI
(2-18-69) After yesterday’s meeting/on the F mission, I have had some second thoughts and prompting by others about using the spacecraft guidance and platform for S-IVB TLI. The following summarizes my position and is to be used as policy in FOD….
F Mission Techniques – LM Checkout
On December 6 we had our first F Mission Techniques meeting dealing with pre-DOI activity. It resulted in a lot of things I never expected, since I thought the timeline and procedures for LM checkout and CSM landing site tracking were pretty well organized and acceptable with just minor tune-up. At this meeting we really…
AGS accelerometers may not work.
Apparently, there is a basic problem in the LM Abort Guidance System (AGS). Although it is not widely known, there is a rumor the accelerometers do not work and it is highly likely G&C Division will elect to procure the AGS accelerometers from another source. Since it is too late to obtain and incorporate them…
Uplink will be on LM-4
A decision was made yesterday which I am sure will make a lot of people happy. ASPO has finally decided to equip the LM-4 with a digital uplink. Obviously, the associated computer programs must be added to the AS-504 LM program. I assume that these are the same as those developed for AS-208 and should…
F and G mission cis-lunar and abort plan
On January 8 a gang of us FOD types got together to develop a proposal on how we should use the LM for cis-lunar and lunar orbit aborts. In other words, how should the C’ techniques be modified due to having the LM DPS available to backup or use in place of the SPS. A…
The LM4 RR/LGC interface may be broken, but that’s okay – sorta
This memo is to document the Data Priority position regarding a recent LM4 systems problem. To wit, it is considered acceptable to proceed with the nominal F mission with a questionable or known interface failure between the rendezvous radar (RR) and the LM spacecraft computer (LGC). It should be emphasized that a properly operating rendezvous…
Proposal to add something nice to the F mission
If it makes sense, I would like to start a campaign to add some actual powered descent into the F mission with an abort about 300 seconds after PDI or whenever it is that the DPS can return the LM to the desired orbit. Could you people please give me a list of the benefits…
CSM rendezvous navigation works fine using just VHF ranging
I made an announcement during the F Operations Review which was absolutely flat-out wrong. This memo is to correct that statement and/or just to make sure you know what capability really exists in the CSM for rendezvous navigation….
F/G cis-lunar midcourse correction mission techniques
This memo is to document the cis-lunar midcourse correction mission techniques we agreed to January 27 and 28 at the F and G Mission Techniques meetings. The translunar maneuvers are based on the following assumptions and guidelines:…