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Walk-around of the upper portion of the Ascent Propulsion System engine.

Picture 2 of 8.

The sign accompanying the ascent propulsion system engine reads

Lunar Module Ascent Engine

The descent stage served as a launching platform from which the ascent stage lifted off the lunar surface.

Thrust:	3,500 lb
Propellant:	Aerozine 50/Nitrogen Tetroxide (hypergolic)
Mixture ratio:	1.6:1
Engine start capability:	35 times
Developed by Bell Aerosystems On loan from Smithsonian Institute