SLS RS 25 Engine Test, 19 January 2022

An Aerojet Rocketdyne RS25 rocket engine was tested on the A1 Test Stand at the John C. Stennis Space Center in Mississippi, on 19 January 2022, at 19:59 UTC (13:59 CST, 14:59 EST). According to NASA, For the Jan. 19 test, engineers fired the RS25 developmental engine at power levels ranging from 80 percent to 111 percent for a full duration of about eightandahalf minutes (500 seconds), the same amount of time the engines must fire to help propel SLS to orbit. New hardware tested on the engine includes valves, insulation, rigid and flex ducts, a high pressure fuel turbopump, a high pressure oxidizer turbopump, instrumentation, and a POGO accumulator manufactured using selective laser melting. NASAs Space Launch System (SLS) will be powered by four RS25 engines firing simultaneously. Credit: NASA, RS25