PW completes key J-2X assembly

CANOGA PARK, Calif. - Pratt & Whitney Rocketdyne successfully completed assembly of the oxidizer turbopump on NASA's J-2X rocket engine, moving the next-generation, human-rated rocket engine a step closer to testing at Stennis Space Center, Miss., in 2011. The oxidizer turbopump delivers high pressure liquid oxygen to the engine's main injector, pumping more than 80 percent of the propellant consumed by the engine. It's driven by a turbine that uses the products of the gas generator after it has driven the engine's fuel turbopump. The J-2X engine was developed with heavy-lift capabilities in mind, and could play an important role as a powerful upper-stage engine for future missions to low-Earth orbit, Mars or an asteroid. (Source: PRNewswire, 12/07/10)