
Full lateral view of the Ares I first stage five-segment development motor in its test stand at ATK in Promontory, Utah. (Credit: ATK)

On July 20, NASA and ATK employees, guests and media gathered to watch the movable building, which houses the solid rocket motor, roll back and reveal the assembled test article. (Credit: ATK)

The Ares I first stage development motor includes a movable nozzle with a larger throat diameter and exit cone designed to improve overall performance. (Credit: ATK)

Alternate view of the 154-foot long development motor. (Credit: ATK)
http://www.nasa.gov/mission_pages/constellation/ares/09-053.html
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