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Pratt & Whitney Rocketdyne RS-68A Engine Configuration Meets All Customer Requirements for Flight


News provided by

Pratt & Whitney Rocketdyne

Apr 26, 2011, 12:57 ET

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CANOGA PARK, Calif., April 26, 2011 /PRNewswire/ -- Pratt & Whitney Rocketdyne successfully completed the Design Certification Review for the upgraded RS-68A engine configuration, demonstrating -the world's most powerful hydrogen-fueled engine has met all requirements to power heavy-lift vehicles into space.  Pratt & Whitney Rocketdyne is a United Technologies Corp. (NYSE: UTX) company.

"This is a stamp of approval for the RS-68A engine and major milestone for Pratt & Whitney Rocketdyne, our United Launch Alliance customer and, most importantly, the nation," said Dan Adamski, RS-68 program manager, Pratt & Whitney Rocketdyne.  "The hard work and determination that everyone dedicated to the RS-68A program over the years brings a new large, liquid hydrogen-fueled engine to market – one capable of lifting heavy payloads into orbit and possibly beyond."

The Engine System Design Certification Review, conducted on March 31 and April 1 by the customer and Pratt & Whitney Rocketdyne, evaluated the RS-68A engine configuration against detailed requirements and specifications.  It was the culmination of a series of reviews that assessed the engine at the component, subsystem and system level, and confirmed compliance with requirements through analysis, test and hardware inspections of development engine 14001 and certification engines 30001 and 30002.  

The first three RS-68A flight engines – 30003, 30004 and 30005 -- have successfully 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 in Mississippi 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.

The RS-68A, an upgrade of the RS-68 engine, is a liquid-hydrogen/liquid-oxygen booster engine designed to provide increased thrust and improved fuel efficiency for the Delta IV family of launch vehicles.  Each RS-68A will provide 702,000 pounds of lift-off thrust, or 39,000 more pounds of thrust than a basic RS-68 engine, with increased combustion efficiency as well.  

Pratt & Whitney Rocketdyne, a part of Pratt & Whitney, is a preferred provider of high-value propulsion, power, energy and innovative system solutions used in a wide variety of government and commercial applications, including the main engines for the space shuttle, Atlas and Delta launch vehicles, missile defense systems and advanced hypersonic engines.  Pratt & Whitney Rocketdyne is headquartered in Canoga Park, Calif., and has facilities in Huntsville, Ala.; Kennedy Space Center, Fla.; West Palm Beach, Fla.; Stennis Space Center, Miss; and ARDE, Carlstadt, N.J.   For more information about Pratt & Whitney Rocketdyne, go to www.prattwhitneyrocketdyne.com.

Pratt & Whitney is a world leader in the design, manufacture and service of aircraft engines, space propulsion systems and industrial gas turbines. United Technologies, based in Hartford, Conn., is a diversified company providing high technology products and services to the global aerospace and commercial building industries.

SOURCE Pratt & Whitney Rocketdyne

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