AR-22 to be built, tested at SSC

Aerojet Rocketdyne has been selected to build the main propulsion system for a reusable hypersonic aircraft, the XS-1, being developed by the Defense Advanced Research Project Agency and Boeing. Aerojet Rocketdyne said Wednesday that it will produce two AR-22 engines using parts from previous versions of the space shuttle main engine that has remained in the company and NASA inventories. Aerojet Rocketdyne will conduct assembly and ground testing work on the two engines at NASA's Stennis Space Center, Miss. Boeing and DARPA entered into an agreement to build, design and test a technology demonstrator earlier in the week as part of the agency’s Experimental Spaceplane program. (Sources: Aerojet Rockedyne, 05/24/17, ExecutiveBusiness, 05/26/17)