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Reaction Motors Inc.

Engines The Company
Model Military Number Name
1946 6000C4 XLR111  
1960   XLR99 Pioneer
1 U.S. Navy XLR8
Reaction Motors Inc. was formed in 1941 by four members of the American Rocket Society.  The company developed the rocket engines used by the the early NASA (NACA)/Air Force X planes including the Bell X-1 that first broke the sound barrier in 1947 and the famous North American X-15.

Reaction Motors was taken over by Thiokol Chemical in 1958 to become the Reaction  Motor Division.  Later the division became Thiokol Propulsion which was acquired by ATK (Alliant Techsystems) in 2001.

Related Websites
ATK Website

page updated 14 September 2003



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Kenneth W Shanaberger 2000 - 2010