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Space

ATK and NASA Set The Pace With Record-breaking X-43A Hypersonic Flight

ATK Scramjet is World's Fastest Jet Aircraft *Test Flight Paves The Way for Low-cost Launch and Time-critical Strike Weaponry

Nov 16, 2004

Minneapolis, November 16, 2004 – For the second time in eight months, ATK (NYSE: ATK) and NASA have set the world speed record for air-breathing powered flight with the X-43A Supersonic Combustion Ramjet (Scramjet)-powered aircraft. The X-43A demonstrated its unique capability after separating from a rocket booster and flying under scramjet power at the hypersonic speed of Mach 10 – approximately 7,000 miles per hour. Initial results indicate that the flight achieved good data and predicted performance.

ATK built the X-43A airframe as well as the scramjet propulsion system that powered the aircraft to its record-setting hypersonic flight. As prime contractor, ATK teamed with Boeing (NYSE: BA), which provided vehicle design support, airframe thermal protection systems, and flight control and navigation systems. Future applications for hypersonic flight include precision time-critical strike weapons with significant stand off capability as well as prompt global reach and low-cost access to space.

In addition to building the X-43A, an ATK rocket motor powered the Orbital Sciences Pegasus-derived launch vehicle that boosted the X-43A to its separation altitude.

ATK is a $2.4 billion advanced weapon and space systems company employing 13,600 people in 23 states. News and information can be found on the Internet at www.atk.com.



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