ROGER B. CHAFFEE SIGNED LAUNCH SEQUENCE EVENTS MEMO.
Lot 1074
CHAFFEE-SIGNED LAUNCH SEQUENCE MEMO. ROGER CHAFFEE'S EARLY ROLE AS CAPCOM.
Original signed memorandum from Mission Control's Blue Team Flight Dynamics Officer, February 11, 1965, sent to Blue Team flight directors John Hodge and Glynn Lunney.
Sold for US$ 1,625 inc. premium
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Lot Details
CHAFFEE-SIGNED LAUNCH SEQUENCE MEMO.
ROGER CHAFFEE'S EARLY ROLE AS CAPCOM.
Original signed memorandum from Mission Control's Blue Team Flight Dynamics Officer, February 11, 1965, sent to Blue Team flight directors John Hodge and Glynn Lunney. The five sheet memo discusses various flight event data information sent to the real-time computer program which operated during a Gemini launch. Numerous abort scenarios are covered for lift-off, an astronaut actuated abort, emergency retro salvo, second stage cut-off, and spacecraft separation.

Roger B. Chaffee's role as spacecraft communicator was one of the many tasks that enabled his selection for the first manned Apollo crew which tragically ended his life in the Apollo 1 spacecraft fire on January 27, 1967. This memo relates directly to Roger Chaffee on sheet two: "The action to be taken by the CapCom, with respect to the lift-off override switch, is as follows – (1) Prior to lift-off (at approx. T-15 min.), the CapCom will remove the possibility of any spurious L/O signals by placing the override switch to 'NO EVENT' and the back to 'NORMAL' position at T-10 seconds. (2) Upon confirmation that lift-off has occurred, either from spacecraft, range, blockhouse, or closed circuit monitor, CapCom will place L/O switch to 'EVENT.'"
This is one of the few surviving signed documents from Astronaut Chaffee's brief career.
SIGNED by ROGER B. CHAFFEE on sheet 4 over the typed title of "CONCURRENCE: Spacecraft Communicator, Blue Team."
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