SLS RS-25 Engine Test, 15 December 2021

An Aerojet Rocketdyne RS-25 rocket engine was tested on the A-1 Test Stand at the John C. Stennis Space Center in Mississippi, on 15 December 2021, at 21:00 UTC (15:00 CST, 16:00 EST). The test had a planned duration of 500 seconds with a maximum 111% power level. NASA’s Space Launch System (SLS) will be powered by four RS-25 engines firing simultaneously. Credit: NASA #RS25