RS-68A completes design certification

CANOGA PARK, Calif. - Pratt & Whitney Rocketdyne successfully completed the design certification review for the upgraded RS-68A engine configuration, demonstrating the hydrogen-fueled engine has met all requirements to power heavy-lift vehicles into space. The first three flight engines, 30003, 30004 and 30005, have completed acceptance testing. Engine 30003 has already been integrated onto a United Launch Alliance Delta IV Heavy launch vehicle in Decatur, Ala. Integration activities for engine 30004 have been initiated, and the third engine, 30005, has successfully completed its processing at Stennis Space Center, Miss., and is awaiting shipment to Decatur in May. The three engines are scheduled to boost a future Delta IV Heavy launch vehicle into orbit carrying a government payload. (Source: PRnewswire, 04/26/11)