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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...

NASA, Boeing looking to begin SLS Exploration Upper Stage manufacturing in 2021 March 4, 2021 Manufacturing and assembly development work for the Space Launch System (SLS) Exploration Upper Stage (EUS) is starting to ramp up at the Michoud Assembly Facility (MAF) in New Orleans. NASA’s SLS Program and EUS prime contractor Boeing are preparing to begin construction of the test and flight articles that will be needed to certify and fly the new upper stage’s first launch. A structural test article (STA) will be assembled at MAF and tested at the Marshall Space Flight Center (MSFC) in Huntsvi...

Second prevalve issue delays completion of SLS Core Stage Green Run campaign February 26, 2021 A problem with another one of the eight prevalves in the Artemis 1 Core Stage for NASA’s Space Launch System (SLS) has postponed a second test-firing to wrap up the Green Run campaign. The SLS Program’s first flight article has been installed in the B-2 Test Stand at the Stennis Space Center in southern Mississippi since January 2020. After a liquid hydrogen prevalve was repaired in November, all the prevalves worked during tanking and firing tests until final preparations for a second Hot-Fire ...

A second Hot-Fire test gives the agency a chance to conduct three special gimbaling experiments that weren’t completed in the first attempt.

NASA decides to redo SLS Green Run Static Fire January 30, 2021 As expected, but now official, NASA has announced the decision to redo the Green Run Hot-Fire test of the agency’s Space Launch System (SLS) Core Stage at the Stennis Space Center in Mississippi. The Core Stage was fired for 67 seconds on January 16 in the B-2 Test Stand at Stennis before the test was ended early. The SLS Program, Core Stage prime contractor Boeing, and RS-25 engine prime contractor Aerojet Rocketdyne are continuing to refurbish their vehicle hardware and Stennis is recycling their ground systems for a second a...