Rocket Motor, Liquid Fuel, James H. Wyld, Serial No. 1, Variant
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This is a replica of the regeneratively-cooled liquid fuel rocket motor designed and built by James H. Wyld of the American Rocket Society (ARS) in 1937.
One major problem faced by early rocket experimenters was overheating of their small motors. Wyld's solution was regenerative-cooling, which was also tried by Robert Goddard and by rocket experimenters in Europe. In this system, the propellant circulates around the motor in a cooling jacket before injection into the combustion chamber where it is ignited with the oxidizer (liquid oxygen). The pre-heated fuel also aids its combustion. The motor was successfully tested in 1938 and 1941.
Wyld and three other ARS members formed Reaction Motors, Inc. (RMI), in December 1941 and this motor is an early replication by the company of that first model, with some of the materials changed. The Reaction Motors Division of Thiokol Chemical Corp. sent the motor to the Smithsonian in 1952.
Display Status
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date
ca. 1937
Country of Origin
United States of America
Type
PROPULSION-Rocket Engines
Manufacturer
Reaction Motors, Inc. Dimensions
3-D: 20.3 x 12.7 x 8.9cm (8 x 5 x 3 1/2 in.) Materials
Rods, Chrome-plated steel; cooling jacket, nickel-plated brass; nuts, steel; motor, proper (threaded interior cylinder), non-ferrous metal; retainer rings, steel; hex nut on component No. 3, aluminum; B-nut, brass; nozzle, non-ferrous metal, possibly plated copper or brass; nozzle sleeves or collars (two), brass Inventory Number
A19520057000
Credit Line
Gift of Thiokol Chemical Corporation, Reaction Motors Division
Data Source
National Air and Space Museum
Restrictions & Rights
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