Tests Clear Way For Hot-Firing Flight SLS Main Engines

Credit: NASA
A 535-sec. test of a modified RS-25 Space Shuttle Main Engine on Aug. 27 wrapped up a series of seven development hot firings, clearing the way for testing of the RS-25s that will be used on NASA’s heavy-lift Space Launch System (SLS). The full-duration test in the A-1 Test Stand at Stennis Space...

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