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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.
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 ...
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 ...
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 spacecraft had three parts: a command module (CM) with a cabin for the three astronauts, the only part that returned to Earth; a service module (SM), which supported the command module with propulsion, electrical power, oxygen, and water; and a lunar module (LM) that had two stages—a descent stage for landing on the Moon and an ...
According to Charles, shortly after the two men completed their moonwalk in July 1969, they climbed back into the Apollo 11 lunar module and Aldrin’s large backpack accidentally brushed up ...
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 ...
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