It is widely known that rocket engines tested at Stennis Space Center (nasastennis) launch NASA’s new Space Launch System (SLS) on its missions. What is not so widely known is that the south Mississippi center also is contributing to the propulsion system that will power the #Orion crew vehicle once it leaves Earth’s atmosphere and separates from the #SLS. Earlier this fall, Stennis engineers completed a series of tests on a subscale diffuser system, providing valuable data for the final development testing of the engines that will provide the power Orion needs for deep-space missions. Shown here, NASA engineers conduct a subscale diffuser test on the E-2 Test Stand. Data collected from the tests will be used to design and configure a full-scale diffuser for testing the propulsion system for NASA’s new Orion crew vehicle. "Full-scale engine testing at Stennis obviously receives a lot of attention," Stennis Director Rick Gilbrech said. "But as this subscale test series shows, the cent...