NASA Mulls Real Upper-stage Engine For Ares I-Y Following I-X Success
Fresh from the success of its Ares I-X development flight-test launch Oct. 28, NASA is putting renewed efforts into studies of whether or not to incorporate a real Pratt & Whitney Rocketdyne (PWR) J-2X engine in the upper stage of the follow-on Ares I-Y suborbital test. Both Ares I-X and I-Y are...
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