The Air Force Research Laboratory has successfully tested a state-of-the-art rocket engine preburner to elevate the U.S. technology base for high performance oxygen-rich staged combustion. The preburner was designed, developed, and tested under the AFRL Hydrocarbon Boost program with prime contractor Aerojet Rocketdyne, and supported by the Air Force Space and Missile Systems Center. Testing was conducted at NASA Stennis Space Center facilities. (Courtesy photo)