DescriptionApollo Lunar Module Modular Equipment Storage Assembly (MESA) Locking & Deployment Mechanism. The two main parts of the MESA deployment mechanism are included in this lot. The locking and deployment mechanism is approximately 12" x 6.5" x 3.5" (overall) and the numbers printed on it appear to be "LOT 3", "LDW 280M17816", "E0A6", and "MRR106498". The cable arm assembly is approximately 10.5" x 7.25" x 3" (overall). The number is faint but appears to begin with "LTM280M506..." This part is missing a cam, otherwise the mechanism is complete. A rare opportunity. Fine condition.
The MESA was located in quad 4 of the Lunar Module Descent Stage. It lowered like a drawbridge when deployed by an astronaut pulling the MESA deployment actuating handle located on the egress platform "porch". As the cable pulled the cam, the cam disengaged a lock pin from a pivot arm. A "key" prevented the lock pin from interfering with its own disengagement from a locking post on the MESA. Once this was done, lunar gravity took over and deployed the MESA. Once deployed, the MESA served as a work station for the astronauts. In the earlier lunar landing missions (Apollo 11-14) the MESA was packed with equipment needed to explore and study the lunar surface. In the later "J" scientific missions (Apollo 15-17), it also carried parts of the Lunar Roving Vehicle as well as supplies for the extended lunar stay time.
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