Apollo Lunar Module Descent Engine (LMDE) Propellant and Oxidizer Shutoff Valve Assembly, measuring approximately 6 x 19 x 6.5, with Whitaker Corporation labels on one end, “Valve, System Propellant Shut-Off, PN 170395-4. Ser No. 005, STL Part No. EC104619-4, STL Serial No. 105, Purchase Order No. 43300, Date of Assy 10-16-65.” Includes an original parts tag dated July 9, 1968, noting, “Removed from HEA #036.” In fine condition. The Lunar Module Descent Engine was designed to allow the Lunar Module to descend from lunar orbit to a hovering position above the lunar surface and make a soft landing. Fuel passed through the shutoff valve into the engine’s manifold, where it was injected into the combustion chamber to generate thrust. The valves were commanded open and shut in conjunction with the LMDE flow control valve and variable pintle injector for throttle control and engine shutdown. A highly desirable piece of hardware critical to a safe lunar landing. Oversized.
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