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NASA powered up its third RS-25 engine hot fire test of the new year Feb. 24 on the Fred Haise Test Stand at Stennis Space Center. Operators fired the engine

NASA Conducts 5th Test in RS-25 Series Supporting Artemis Moon Missions July 14, 2021 NASA conducted a fifth RS-25 single-engine hot fire July 14 as a continuation of its ongoing seven-part test series, supporting development and production of engines for the agency’s Space Launch System (SLS) rocket on future missions to the Moon. Operators fired the engine for more than eight minutes (500 seconds) on the A-1 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, providing data to Aerojet Rocketdyne, lead contractor for the SLS engines, as it produces engines for use after the...

Aerojet Rocketdyne refurbishing RS-25 engines for Artemis 1 launch and production restart testing April 9, 2021 With the completion of another single-engine RS-25 development test, Aerojet Rocketdyne is now refurbishing five engines at the Stennis Space Center in Mississippi for their next use. After the second test firing of the Retrofit 2 series in the A-1 Test Stand on April 6, development engine 0528 is going through a streamlined refurbishment prior to its next firing as a part of the production restart Retrofit 2 test series. In parallel, the four RS-25 engines installed on the first Sp...