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Aerojet Rocketdyne propulsion supports launch of Air Force meteorological satellite

7 April 2014

GenCorp (NYSE: GY) company Aerojet Rocketdyne said it played a major role in launching the 19th Defense Meteorological Satellite Program Block 5D weather satellite into orbit for the US Air Force.

The mission was launched from Vandenberg Air Force Base in California aboard a United Launch Alliance Atlas V rocket, with an Aerojet Rocketdyne RL10A-4-2 upper-stage engine, five helium pressurization tanks and a dozen Centaur upper-stage thrusters used for roll, pitch, yaw and settling burns.

DMSP satellites have provided critical terrestrial and space weather information to the US military for more than 50 years. With the satellites, the military can find, track and forecast weather systems over remote and hostile areas to troops worldwide.

Aerojet Rocketdyne´s role in the launch primarily began with the ULA Centaur upper stage, which is powered by a single RL10A-4-2 engine. Twelve Aerojet Rocketdyne monopropellant (hydrazine) thrusters in four modules on the Atlas V Centaur upper stage provided roll, pitch and yaw control as well as settling burns for the upper stage.

Aerojet Rocketdyne is a world-recognized aerospace and defense leader providing propulsion and energetics to the space, missile defense and strategic systems, tactical systems and armaments areas, in support of domestic and international markets. Its website is at and


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