The RS-25 team at the Stennis Space Center in Mississippi began the next development test series on Tuesday afternoon. Development Engine 0525 (E5025) was back in the A-1 test stand at Stennis for the first of nine tests to certify affordability changes and operational upgrades for newly-built engines that will start being delivered by prime contractor Aerojet Rocketdyne to NASA’s Space Launch System (SLS) Program in the early 2020s. However, the test aborted early due to what is understood to be a “facility issue”, although all the test objectives were achieved.
