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The engine developed about 3,500 pounds-force (16 kN) of thrust, which produced a velocity of 2,000 meters per second from lunar launch, to LOR, and CM docking. [7] [2] It weighed 180 pounds (82 kg), with a length of 47 inches (120 cm) and diameter of 34 inches (86 cm). [8] [unreliable source?] Lunar ascent by Apollo 17 ascent stage.
A major portion of the service module was taken up by propellant and the main rocket engine. Capable of multiple restarts, this engine placed the Apollo spacecraft into and out of lunar orbit, and was used for mid-course corrections between the Earth and the Moon. The service module remained attached to the command module throughout the mission.
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 ...
The LK Blok E had both primary and reserve engines allowing for reassurance of ascent; the Apollo LM lifted off with a single ascent engine, and had no backup or reserve but was designed for simplicity and reliability allowing for optimal assurance of ascent. A failure of the LM ascent engine would guarantee a critical mission failure. [1]
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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Ap17-ascent.ogv (Ogg multiplexed audio/video file, Theora/Vorbis, length 30 s, 320 × 240 pixels, 323 kbps overall, file size: 1.15 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.