Q5263733: Difference between revisions

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Q5263733
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{{Page|Descent Propulsion System|Classes|rocket engine used by the Apollo Lunar Module|DPS, LMDE, Lunar Module Descent Engine, VTR-10}}
{{Page|Descent Propulsion System|Classes|rocket engine used by the Apollo Lunar Module|DPS; LMDE; Lunar Module Descent Engine; VTR-10}}

Latest revision as of 12:44, 2 September 2025




The descent propulsion system or lunar module descent engine (LMDE), internal designation VTR-10, is a variable-throttle hypergolic rocket engine invented by Gerard W. Elverum Jr. and developed by Space Technology Laboratories (TRW) for use in the Apollo Lunar Module descent stage. It used Aerozine 50 fuel and dinitrogen tetroxide oxidizer. This engine used a pintle injector, which paved the way for other engines to use similar designs.