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[b]J-2X Engine Assembly in Full Swing[/b] Assembly of the first J-2X, dubbed engine 10001, is in full swing at NASA's Stennis Space Center. Managed by the Marshall Space Flight Center, the J-2X engine is a highly efficient and versatile rocket engine that has the ideal performance characteristics to power the upper-stage of a heavy-lift launch vehicle. Fueled by liquid hydrogen and liquid oxygen, the J-2X engine will generate 294,000 pounds of thrust to propel a spacecraft from low-Earth orbit to the moon, an asteroid, or other celestial destination. Pratt & Whitney Rocketdyne of Canoga Park, Calif. is the prime contractor for the design and manufacture of the J-2X. Hot fire testing of Engine 10001 is targeted for later this summer at Stennis.
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