NASA conducted the first test of the newly redesigned RS-25 engine for future flights of the Space Launch System (SLS) rocket on December 14, completing 209.5 seconds of a scheduled 500-second hot fire at the agency’s Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test was shu
Stennis Space CenterThe hot fire test was shut down early by a non-flight system used to monitor engine vibrations. Engineers use various accelerometers to monitor vibrations on engine components during a hot fire. Data review by NASA and Space Launch System lead engine contractor Aerojet Rocketdyne indicated a group of the accelerometers were improperly configured for the December 14 hot fire.
The single-engine hot fire, known as a confidence test, was designed to confirm all is ready to proceed with a series of certification tests early next year on a full RS-25 certification engine. NASA and the company modified 16 of the engines remaining after the Space Shuttle Program for use on Artemis mission I through IV. The upcoming series of testing is for the RS-25 engines that will be used beginning with Artemis V.
The test on the Fred Haise Test Stand at Stennis came just days after NASA successfully completed the Artemis I flight test in preparation for future missions to the Moon.
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