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ROCKET SCIENCE
Final hardware delivered for second SLS booster test
by Staff Writers
Promontory UT (SPX) Mar 10, 2016


Image courtesy Orbital ATK. For a larger version of this image please go here.

The fifth and final segment for a full-scale test version of NASA's Space Launch System booster is delivered March 2 to Orbital ATK's Promontory, Utah, test site.

The aft - or rear - segment of the booster will be assembled with the other four segments, currently at the test stand, and outfitted for a second booster qualification ground test this summer.

The test will measure the booster's performance at a cold motor conditioning target of 40 degrees and also demonstrate that it meets applicable ballistic requirements.

NASA successfully completed the first booster qualification test in March 2015. The two full-scale tests provide crucial data to support booster qualification for the first two flights of SLS with NASA's Orion spacecraft.

When completed, two five-segment boosters and four RS-25 main engines will power SLS, with Orion atop, on deep-space missions, including to an asteroid and ultimately to Mars.

The solid rocket boosters - measuring 177 feet long and producing 3.6 million pounds of thrust - operate in parallel with the main engines for the first two minutes of flight.

The boosters provide more than 75 percent of the thrust needed for the launch vehicle to escape the gravitational pull of Earth. Orbital ATK is prime contractor for the SLS boosters.

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