Reaction Control System (RCS) thruster as used in the Apollo Service Module and Lunar Module.
Manufactured by The Marquardt Corporation as Model R-4D.
Rated thrust of 100 pounds.
Assembly dated “3Q70” (third quarter of 1970) - at the time of the Apollo moon landings.
Cutaway view
(NASA graphic) shows thruster components and materials.
Compare
with the
Mercury
24-pound thruster and the
Gemini
25-pound thruster (below).
5.17 lbs. (2.33 kg)
© 1998-2015
Historic Space Systems at www.space1.com
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