22 million horspower solid rocket engine test

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NASA and industry partners lit up the Utah sky on Sept. 10, 2009, with the initial full scale, full-duration test firing of the first motor for the Ares I rocket. ATK Space Systems conducted the successful stationary firing of the five-segment solid development motor 1, or DM-1. ATK Space Systems, a division of Alliant Techsystems of Brigham City, Utah, is the prime contractor for the Ares I first stage. Engineers will use the measurements gathered from the test to evaluate thrust, roll control, acoustics and motor vibrations. This data will provide valuable information as NASA develops the Ares I and Ares V vehicles. Another ground test is planned for summer 2010.