C’ maneuvers – SPS versus RCS crossover

See list attachedOctober 16, 196868-PA-T-222APA/Chief, Apollo Data Priority CoordinationC’ maneuvers – SPS versus RCS crossover

Neil Townsend (EP2) informed me by phone – and will supply written confirmation – that the minimum duration SPS burn for C' should be no less than 0.5 seconds. We had been assuming something smaller. According to MPAD (Otis Graf, FM7) this makes the crossover point between use of the RCS versus the SPS engine:

Translunar midcourse correction – 5 fps

Transearth midcourse correction – 12 fps

These values will be explained completely in an FM7 memo soon to be distributed. I just want everybody to be aware of the new values and to start using them in his planning.