DescriptionApollo Service Module Propulsion System.jpg
English: This is a cutaway of the top part of the Apollo Service Module Propulsion System (SPS), a liquid-fuel rocket engine used on Apollo spacecraft. The bottom part, not shown here, consists of a large nozzle. The SPS engine was mounted at the base of the Apollo service module, which was attached to the three-astronaut command module. Apollo astronauts used the SPS to steer their spacecraft toward the Moon, place it in lunar orbit, and propel it back toward Earth. The SPS engine served successfully on all Apollo missions, including the Apollo-Soyuz Test Project in 1975. Picture taken at the National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia, USA.
Length: 1.6 m (5 ft 3 in)
Weight: 1,733 kg (3,850 lb)
Thrust: 97,400 N (21,900 lb)
Propellants: hydrazine dimethylhydrazine, nitrogen tetroxide
Manufacturer: Aerojet General Corp.
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