RS-68A Cleared For Service After Final Review

By Guy Norris .

WEST PALM BEACH, Fla. — Pratt & Whitney Rocketdyne (PWR) is poised to complete development of the RS-68A, the most powerful hydrogen-fueled engine ever made, and this week will deliver the third flight test engine for integration into a Delta IV launch vehicle.

“We’re just wrapping up 68A and held a design certification review in California with United Launch Alliance and the ...

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