One step taken in an attempt to alleviate the RTCC program development problem has been to make major reductions in the area of retrofire time computations. Since these deletions have an impact on the Retrofire Controller’s capability and mode of operation, I felt it desirable to report these things in a memorandum devoted solely to…
Category: Reentry
Is display of max g in P-61 any good?
During our lunar landing GSOP review someone commented that the display of max g in P-61 is of no use at all. It was said to be grossly in error for earth orbit reentry and of no value in determining appropriate action during entry from lunar return or following an abort when it is more…
Some assumptions about Spacecraft 101 retrofire and reenty procedures
We have recently held several small Trajectory Control Data Priority Working Group meetings dealing with Spacecraft 101 retrofire and reentry. The results are being documented to show how the various guidance and navigation data sources will be compared to one another and used during the mission. During these discussions a couple of basic assumptions have…
Reentry from lunar missions
On January 12 a group of Flight Crew, Flight Control and Mission Planning guys got together to talk about the lunar reentry and some rather interesting things came out which I am recording here for my records and your amusement….
Lunar Reentry Mission Techniques meeting – March 7
On March 7 we had a Data Priority Mission Techniques meeting on lunar reentry. This was the first on this mission phase with contractor participation. Our objective was to understand the current status of the business and to begin pinning down the operational procedures to be used onboard the spacecraft and on the ground. We…
Lunar Reentry Mission Techniques meeting – March 21
On March 21 a small group of us ???? ??????? the logical flow charts TRW produced based on our ??? Lunar Reentry Mission Techniques meeting a couple of weeks ago. A couple of things came up that I should probably pass around….
April 9 Lunar Reentry Mission Techniques meeting
Almost the entire April 9 Lunar Reentry Mission Techniques meeting was spent in discussion of the second and third midcourse correction maneuvers made on the way back from the moon. Ron Berry presented some really interesting data which I think gives us an insight into the character of these maneuvers needed to assure the techniques…
Spacecraft computer program newsletter
I learned some things at MIT last week that seemed interesting enough to justify this note. Of course, it deals primarily with the spacecraft computer programs and their influence on the mission techniques we are developing….
Transearth midcourse correction philosophy – a major operation break through!
In trying to establish mission techniques for the midcourse correction maneuvers on the way back from the moon, we reached a point beyond which we could not progress without first establishing some sort of maneuver philosophy, like:…
EMS will always be used on “C” if G&N fails
Mr. C. C. Kraft announced at his Monday morning meeting that the EMS will be used for controlling reentry on the “C” mission in the event of a G&N failure regardless of when that failure occurs. This was decided over his mild objection at George Low’s CCB meeting last week….