NASA has posted a press release, NASA Preparing for DM-2 Test, that reports “[p]reparations are under way for the testing of NASA’s next-generation, five-segment solid rocket development motor — DM-2 — in September. The test is designed to advance the understanding, safety, technology and capability of solid rocket motors.
The five-segment DM-2 motor — capable of producing 22 million horsepower and generating as much as 3.6 million pounds of thrust — was developed by ATK Space Systems, a division of Alliant Techsystems of Brigham City, Utah, the prime contractor for the solid rocket motor, and is being assembled at ATK’s test stand in Promontory, Utah. This will be the second, full-scale, full-duration test of the new development motor, which follows the successful test of DM-1 last fall. “