Over the years various groups have attacked the problem of if and how the crew can manually steer the LM back into orbit from the lunar surface. These studies were started before GAEC was even selected to build the LM and some analysis is still going on to define the optimum pitch attitude profile, which…
D Rendezvous Mission Techniques
The final review of the D Rendezvous Mission Techniques will be held on Wednesday, January 15, starting at 9:00 a.m., in Room 383, Building 4….
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….
Sextant Rendezvous Navigation Review
As noted in the attached memorandum, I would like to request your active participation in a meeting on April 25 to review for “C” mission operational personnel the work your people have done on CSM sextant rendezvous navigation. I think, in order in insure proper use of the CSM G&N during the spacecraft 101 flight,…
AS-504 spacecraft computer program and storage status. Also a dash of AS-258.
On January 12 a great herd of us went to MIT to review the AS-504 spacecraft computer program requirements, or at least the questionable items, to make sure we would not overflow the computer storage capability. The consensus of those present was that MIT had put together an excellent presentation defining, with considerable precision, the…
Descent monitoring at MCC
We have reached a plateau in our work on Descent Monitoring, perhaps making it worthwhile to send out this memo. First of all, I don’t think there is any question that Descent is the thing that requires most of our attention between now and the G mission, at least in the empire of Mission Techniques….
Proceed button
Looks like we’re approaching the final chapter in the proceed button story. As I understand it, all manned Apollo spacecraft will have computers wired such that the standby button serves the dual purpose of standby function, as before, and a proceed function duplicating Verb 33 Enter. At least, that is the current intention. Apparently there…
“Any time” LM lift off is an unnecessary constraint
No big deal, but I’d just like to point out that I don’t agree with something in the memorandum to TA/Director of Science and Applications, dated March 19, 1968, subject: Operational constraints for the fourth lunar landing mission, which you signed. It stated in part, “It is the opinion of the Flight Operations Directorate that…
DPS Modeling
It might be worthwhile for you or your people to look into the DPS modelling in the RTCC. The “D” mission includes several maneuvers with manual throttling. Improper modeling of these burns may have some effect on the operation, although, offhand I would not think so….
Software for the AAP CSM spacecraft computer
The time appeared right to try to find out exactly what the program requirements are for the CSM computer for AAP and we had meetings on January 28 and 30 to do that. As a result of these meetings, a number of PCR’s will be prepared and submitted to the Apollo Spacecraft Software Configuration Control…