The RS-25 engine test team at NASA’s Stennis Space Center in Mississippi ran the next hot-fire test in the A-1 test stand on Tuesday afternoon. The third test-firing in a series of nine continues the evaluation of engine components built by prime contractor Aerojet Rocketdyne using modern, updated manufacturing techniques aimed at reducing the cost to build new “production restart” engines for delivery in the early 2020s.
Development Engine 0525 (E5025) explored data points outside the center of the engine’s operating envelope during Tuesday’s eight-plus minute long test. Another engine computer was installed on E0525 for an acceptance test that will add the part to the inventory of Core Stage Engine hardware for the first launches of NASA’s Space Launch System (SLS).