J-2X In Final Assembly As Funds Dry Up

Credit: Pratt & Whitney Rocketdyne
The first complete J-2X upper-stage rocket engine is being assembled by Pratt & Whitney Rocketdyne (PWR), and will be ready for testing early next year—just as the Ares I crew launch vehicle that it paced runs out of money. The future of the engine—a variant of the J-2 engines that propelled the...

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