Country of Origin: United States of America
Other (outer): 2 ft. 8 in. diameter x 10 ft. 9 in. long x 4 ft. 1 in. wide (81.3 x 327.7 x 124.5cm)
Combustion chamber, injectors, and some tubing, 4130 steel; propellant lines, pumps, impellers, and valves, aluminum alloys including heat exchanger; harness manifold and other parts, steel.
This is the Redstone rocket engine and was the U.S.'s first operational large-scale rocket engine. Development began in 1950 by North American Aviation. The engine used liquid oxygen and alcohol and developed 75,000 pounds of thrust.
On January 31, 1958, a modified Redstone rocket called the Jupiter-C, using more powerful fuel, launched Explorer 1, the first successful U.S. satellite, into orbit. On May 5, 1961, a Redstone launched Alan B. Shepard, the first American astronaut into space. The Redstone was the forerunner of other important large-scale U.S. engines, including those for the Thor, Jupiter, and Atlas missiles, the Saturn V launch vehicle, and the Space Shuttle Main Engine (SSME). This object was donated to the Smithsonian in 1991 by the U.S. Army.
Transferred from the U.S. Army.