PA/Manager, Apollo Spacecraft ProgramDEC 11 196767-PA-T-137APA/Chief, Apollo Data Priority CoordinationApollo 205/101 reentry procedures
1. ASPO's Systems Engineering Division wrote a memo outlining general procedures to be used by the Spacecraft 101 crew following a G&N con- trolled deorbit burn and also specifying that an automatic reentry would definitely not be performed. You forwarded that memo to me questioning whether our Data Priority Coordination group had looked into this subject and, if so, if we were consistent. I have attached a copy of our recently completed Trajectory Control logical flow charts for you to see. (Don't try to read it!) We expect to review them worldwide on December 20. After incorporating reasonable comments, we will review them in detail with you, Chris and Deke, at your convenience. As far as I can tell, they are completely consistent with the spirit of the FD12 memo and obviously go into far more detail.
2. With regard to the manner in which the reentry itself should be performed, we felt it unnecessary to specify that at this time since it is not particularly important from an operations standpoint. I'm sure the crew will do as well as the DAP, or vice versa, in closing the gap between computed guidance commands and spacecraft attitude control. It seems to me that the decision to which way it should be performed should be based on the objectives of the mission instead.