TRW Systems released the AS-207/208 Preliminary Spacecraft Reference Trajectory during the first week of May. This report was put together on a compressed schedule, starting from rather hastily defined mission requirements. As a result, there are a number of things about it which were recognized as being in error even before release; however, since we…
Category: Earth orbit
Alternative rendezvous technique – mission planning status
Since our meeting in your office on the stable orbit rendezvous, Ed Lineberry and I have met on a number of occasions with other interested people in an attempt to lay out a schedule of work needed to arrive at the decision as to how to go on 278 and subsequent missions. This note is…
AGC program status for AS-278
I guess enough things have happened affecting the status of the programs for the AS-278 mission that I ought to issue another status report. According to MIT, work is progressing along basically on schedule. The major effort is currently in Ed Copps’ area where coding of the program is going on which should be completed…
Small program change needed in the AS-501/502 AGC program
In the course of development of the AS-206 computer program at MIT, a coding error was discovered which was immediately recognized as being common to the AS-204 and AS-501/502 programs. It is a scaling error, if you know what that means, which imposes the operational constraint of not operating one of the integration programs (i.e.,…
AAP platform should be torqued to local horizontal
In thinking about it a little more, I guess I should have pointed out in the last of these little notes that I’m assuming if we use horizon scanners, we will go ahead and torque the platform at orbit rate. This, of course, will require a certain amount of modification in some of the spacecraft…
Prelaunch DAP initialization
During our review of the lunar landing GSOP’s, the question of prelaunch DAP initialization was brought up. As far as I can see, there is no use for the DAP until after TLI, isn’t that right? For example, the contingency orbit insertion maneuver does not use the DAP nor does CSM guidance of the S-IVB….
Analysis of LM rendezvous navigation is needed
This memorandum is just a reminder for a couple of action items I discussed with you coming from the lunar landing GSOP review August 17. I think it is very important that you really get on with analyzing the performance of the rendezvous navigation in the LM using the radar. Two items you should specifically…
Data Priority meetings schedule
In order to get a little bit more orderly in our conduct of the Trajectory Control Data Priority business, it’s evident that we must schedule meetings on a pre-established, periodic basis. Accordingly, the Ascent and Descent meetings will take place on alternate Tuesday afternoons; Rendezvous meetings will be held of Wednesdays, one mission in the…
Spacecraft computer program orbital integration
This is just another little golden nugget for your files….
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….