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ATK Propulsion And Composite Technologies Key To Successful Delta II Launch

by Staff Writers
Minneapolis (SPX) Sep 11, 2008
Alliant Techsystems played a key role in the successful launch of United Launch Alliance's Delta II rocket Saturday, Sept. 6 from Vandenberg Air Force Base, Calif.

ATK manufactured the four GEM-40 solid propulsion strap-on boosters that ignited with the Delta II first-stage main engine at liftoff.

The boosters provided 600,000 pounds of maximum thrust helping carry the Geo-Eye-1 satellite to its required orbit.

ATK manufactured the GEM-40 motors at its facility in Magna, Utah, continuing a tradition of flight support for Delta II missions that began in 1990.

The composite cases for the GEM-40 boosters were produced at ATK's Clearfield, Utah, facility and are made of graphite epoxy material (GEM).

The lightweight, filament wound cases are one-fifth the weight of steel. Mission specific doors were fabricated and installed on the Delta II composite fairing by ATK's Iuka, Miss., facility.

GeoEye-1 is a next-generation, earth imaging satellite and will have the highest resolution of any commercial imaging system -- 0.41-meters or 16 inches for panchromatic (black and white) imagery and multispectral (color) imagery at 1.65-meter resolution.

GeoEye-1 was financed in part by GeoEye's approximate $500-million contract with the National Geospatial-Intelligence Agency.

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United Launch Alliance Launches GeoEye-1 Commercial Satellite
Vandenberg AFB CA (SPX) Sep 08, 2008
An United Launch Alliance Delta II rocket, on behalf of Boeing Launch Systems, successfully launched the GeoEye-1 satellite. Blasting off from Space Launch Complex 2 here, it marked the second ULA Delta II mission from Vandenberg in 2008.

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