This is the General Electric X-405 rocket engine for the first stage of the Vanguard launch vehicle. Vanguard was the first U.S. rocket specifically designed to launch a satellite. The X-405 produced 27,000 pounds of thrust. The thrust chamber was gimballed to provide thrust vector control.
Oon 17 March 1958, a Vanguard rocket successfully placed Vanguard 1 into orbit, America's second satellite after Explorer 1 that was successfully launched with a modified Restone rocket on 31 January 1958. Vanguard 2 was placed into orbit on 17 February 1959 and Vanguard 3 was launched 18 September 1959. This engine was donated to the Smithsonian in 1976 by the Wright-Malta Corp.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
United States of America
PROPULSION-Rocket Engines
General Electric Company
Overall: 31 × 70 1/2 × 11 in., 600lb. (78.7 × 179.1 × 27.9cm)
Storage (Artex Crate): 1 m 14.3cm × 1 m 11.8cm × 2 m 8.3cm, 676kg (3 ft. 9 in. × 3 ft. 8 in. × 6 ft. 10 in., 1490 5/16lb.)
Overall, mainly 4130 stainless steel; thrust members (vertical pipes on top of nozzle leading to thrust structure), 6061-T6 aluminum; propellant rings, copper-brazed; injector filter, 100-mesh stainless steel; injectors, stainless steel; injector gaskets, copper; helical fins, copper; inner shell of motor, nickel phosphide coated; hydrogen peroxide decomposer, stainless steel chamber; motor coolant passage surfaces and exterior of motor body, cadmium plated but later development motors, possibly this motor included, replaced the cadmium coating with nickel phosphide.
A19760048000
Transferred from Wright-Malta Corporation
National Air and Space Museum
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