STENNIS SPACE CENTER, Miss. - NASA marked the completion of an RS-25 single-engine Retrofit-2 test series at Stennis Space Center on Sept. 30. A full-duration hot fire of RS-25 developmental engine No. 0528 on the A-1 Test Stand culminated a seven-test series to support development and production of new engines for the agency’s Space Launch System (SLS) rocket on future missions. Operators fired the engine for more than eight minutes (500 seconds), the same time required during an actual launch. The test series provided valuable information to Aerojet Rocketdyne, lead contractor for the SLS engines, as it produces engines for use after the Artemis IV mission to the Moon. Operators collected hot fire data to demonstrate and verify various engine capabilities, and to evaluate new engine components manufactured with cutting-edge and cost-saving technologies and reduce operational risk. (Source: NASA, 09/30/21)
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