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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. Rocketdyne provided the injector system, at the request of NASA, when Bell could not solve combustion ...
Booster systems engineer The booster systems engineer monitored and evaluated performance of propulsion-related aspects of the launch vehicle during prelaunch and ascent. During the Apollo program there were three booster positions, who worked only until trans-lunar injection (TLI) was complete; after that, their consoles were vacated. Booster ...
It contained its own ascent propulsion system (APS) engine and two hypergolic propellant tanks for return to lunar orbit and rendezvous with the Apollo command and service module. It also contained a reaction control system (RCS) for attitude and translation control, which consisted of sixteen hypergolic thrusters similar to those used on the ...
It supplied life support systems for two astronauts for up to four to five days on the Apollo 15, 16 and 17 missions. The spacecraft was designed and manufactured by the Grumman Aircraft Company. The descent stage contained the landing gear, landing radar antenna, descent propulsion system, and fuel to land on the Moon
The 2005 NASA Exploration Systems Architecture Study (ESAS), part of the 2004 Vision for Space Exploration, recommended that the crew exploration vehicle (CEV) lunar surface access module (LSAM) ascent stage propulsion and service module propulsion systems employ a pressure-fed LOX/liquid methane (CH 4) engine.
At 17:54:00 UTC, they lifted off in Eagle 's ascent stage to rejoin Michael Collins aboard Columbia in lunar orbit. After the crew re-boarded Columbia, the Eagle was abandoned in lunar orbit. The location of its impact on the Moon's surface during an orbit decay is unknown, and there is evidence that Eagle may still be in orbit. [3] [4]
He oversaw the development of the Lunar Module propulsion systems. A major concern was the ascent propulsion system, which was a critical component of the mission that had to work for the astronauts to survive. [43] Testing at the White Sands Missile Range in 1966 indicated combustion instability. [44]
Thereafter, the main Service Propulsion System engine of the CSM re-ignited for about 2.5 minutes to set Apollo 10 on a trajectory towards Earth, achieving such a trajectory at 137:39:13.7. As it departed lunar orbit, Apollo 10 had orbited the Moon 31 times over the span of about 61 hours and 37 minutes.
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