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News

ATK Roles Key to Launch of Air Force GPS Satellite


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ATK
: 17 November, 2006  (New Product)
ATK Propulsion Technologies Support Successful Launch of Boeing Delta II Rocket
ATK Roles Key to Launch of Air Force GPS Satellite

MINNEAPOLIS, Nov. 17 /PRNewswire-FirstCall/ -- Alliant Techsystems (NYSE: ATK) solid propulsion technology supported yesterday's successful launch of a Boeing Delta II Rocket from Cape Canaveral Air Force Station, Fla. The launch will place the third modernized NAVSTAR Block 2R military navigation satellite into orbit for the U.S. Air Force's Global Positioning System (GPS) constellation.

Nine GEM-40 solid propulsion strap-on boosters manufactured by ATK in Salt Lake City Utah provided augmented thrust for the launch. Six of the boosters ignited at lift-off with the first-stage main engine and provided over 850,000-lbf maximum thrust for the launch vehicle. Just over one minute later, the remaining three boosters ignited to provide an additional 450,000-lbf maximum thrust. The spent motors were jettisoned from the Rocket as it continued its ascent.

Following burnout and separation of the GEM-40 boosters and the rocket's liquid second stage, an ATK-produced STARô 48B ird-stage Rocket motor delivered the 2,400-lb GPS satellite to its orbit approximately 11,000 nautical miles above the Earth.
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