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The ascent propulsion system (APS) or lunar module ascent engine (LMAE) is a fixed-thrust hypergolic rocket engine developed by Bell Aerosystems for use in the Apollo Lunar Module ascent stage. It used Aerozine 50 fuel, and N 2 O 4 oxidizer.
Engineers at Arnold Air Base with an Apollo service module engine Apollo Service Module Propulsion System The service propulsion system ( SPS ) engine was originally designed to lift the CSM off the surface of the Moon in the direct ascent mission mode, [ 20 ] The engine selected was the AJ10-137 , [ 21 ] which used Aerozine 50 as fuel and ...
The Apollo 10 ascent stage engine was fired until its fuel was used up, sending it past the Moon into a heliocentric orbit. [ 9 ] [ 10 ] The Apollo 11 ascent stage was left in lunar orbit to eventually crash; all subsequent ascent stages (except for Apollo 13) were intentionally steered into the Moon to obtain readings from seismometers placed ...
Complete Apollo spacecraft stack: launch escape system, command module, service module, Lunar Module, and spacecraft–LM adapter The Apollo 17 CSM seen in lunar orbit from the ascent stage of the Lunar Module. The Apollo spacecraft was composed of three parts designed to accomplish the American Apollo program's goal of landing astronauts on ...
The Apollo 11 ascent stage would be left in lunar orbit to crash randomly, while ascent stages of later Apollo mission (12, 14, 15 and 17) were steered into the Moon to obtain readings from seismometers placed nearby on the surface, with two exceptions: Apollo 13's ascent stage, which the crew used as a "life boat" to get safely back to Earth ...
Apollo 9 (March 3–13, 1969) was the third human spaceflight in NASA's Apollo program.Flown in low Earth orbit, it was the second crewed Apollo mission that the United States launched via a Saturn V rocket, and was the first flight of the full Apollo spacecraft: the command and service module (CSM) with the Lunar Module (LM).
ARD support (ascent only) – maintained the abort region determinator processor which is used to predict trajectory capabilities during powered flight; Ascent support team (ascent only) – monitored the winds and weather at the launch site, help compute day-of-launch updates
During the flight, the ascent and descent engines would be fired. A "fire in the hole" test would be conducted to verify that the ascent stage could still fire while attached to the descent stage, a procedure that would be used on the lunar surface and in the event of an aborted lunar landing. It involved shutting down the descent stage ...