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Aerojet Completes Design Verification Testing On First MR-104G Engine For NASA's Orion Spacecraft

 

 

 

 

 

SACRAMENTO, Calif., Nov. 22, 2011 /PRNewswire/ -- Aerojet, a GenCorp (NYSE: GY) company, in conjunction with Lockheed Martin and NASA, has successfully completed vibration, shock and hot fire design verification testing on its first MR-104G monopropellant rocket engine planned for use on NASA's Orion spacecraft.

Twelve 160-lbf thrust MR-104G engines, arranged in four single-engine pods and four dual-engine pods, provide the full complement of primary and redundant control required for critical maneuvers upon a high-speed re-entry into Earth's atmosphere.

The first phase of the MR-104G design verification testing was a critical milestone in the development of the Orion Crew Module propulsion system and marks a significant step toward Orion's first orbital flight test. Orion-specific environment, performance and life requirements were demonstrated as part of this test program in support of the flight test plan. The design verification testing program consisted of vibration and shock testing to appropriately stress the engine structure and catalyst bed similar to launch environments prior to engine hot fire testing. The hot fire test then demonstrated the engine performance and life capability, along with thermal model validations with cold starts, hot restarts and deep thermal cycles.

Several new design features for the MR-104G engine were demonstrated in this testing series, including a newly developed 120-volt series-redundant propellant valve, a 120-volt/40 watt catalyst bed heater, a new chamber pressure transducer and an integral thruster mount configuration.

The MR-104 engine family originally provided in-space propulsion for the Voyager 1 and 2 and Magellan missions. Subsequent MR-104 variants provided propulsion for Landsat, NOAA as well as other U.S. government programs.

"Aerojet is very proud of its support of the crew module's liquid propulsion systems for the Orion spacecraft," said Sam Wiley, Aerojet's Orion program director. "We are excited to provide spacecraft propulsion engines to be used for the next generation of human spaceflight and continue our track record of 100 percent mission success for NASA's human spaceflight dating back to Apollo."

Lockheed Martin is the prime contractor to NASA for Orion, the nation's next generation spacecraft designed to carry astronauts beyond low Earth orbit on long-duration, deep-space missions. Lockheed Martin leads the Orion industry team which includes major subcontractors as well as a nationwide network of minor subcontractors and small businesses. In addition, Lockheed Martin contracts with hundreds of small and disadvantaged business suppliers across the United States through an expansive supply chain network. Visit www.lockheedmartin.com/orion for more information.

Aerojet is a world-recognized aerospace and defense leader principally serving the missile and space propulsion, defense and armaments markets. GenCorp is a leading technology-based manufacturer of aerospace and defense products and systems with a real estate segment that includes activities related to the entitlement, sale, and leasing of the company's excess real estate assets. Additional information about Aerojet and GenCorp can be obtained by visiting the companies' websites at http://www.Aerojet.com and http://www.GenCorp.com.

SOURCE Aerojet

Copyright 2011 PR Newswire. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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