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Transposition, docking, and extraction
Transposition, docking, and extraction (abbreviated to TD&E, often just transposition and docking) was a space rendezvous maneuver performed during the Apollo lunar missions of the 1960s and 70s. It was performed after the trans lunar injection burn that placed the Apollo spacecraft on the trajectory towards the Moon, but before reaching the Moon or attaining lunar orbit.
== Performing TD&E ==
It was performed by the Command Module pilot (although, as a contingency, the Lunar Module pilot and commander were also trained to perform the maneuver), and involved separating the CSM from the S-IVB, pitching the CSM 180° and proceeding to dock with the Lunar Module, by inserting a probe at the top the CSM into a drogue at the top of the Lunar Module. Then, the Apollo spacecraft stack would separate from the S-IVB, which would then either continue on to a heliocentric orbit or be deliberately steered into a crash landing on the Moon.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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