Denver, Colo., (Sept. 25, 2008) – United Launch Alliance today announced the successful first hot-firing of the new Pratt & Whitney Rocketdyne RS-68A engine that will be used to power a future ...
Pratt & Whitney Rocketdyne successfully completed a series of hot-fire tests on the second and final RS-68A certification test engine, paving the way for its use in powering heavy-lift launch vehicles ...
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