DOD has designated Air Force Research Lab’s scramjet engine as the X-51A test vehicle, the latest addition to the class of experimental aircraft. AFRL officials at Wright-Patterson AFB, Ohio, say the X-51A will explore powered atmospheric flight at hypersonic speeds—greater than five times the speed of sound. USAF believes hypersonic propulsion technology will lead to reusable, on-demand launch vehicles and high-speed weapons that could take out time-critical targets over great distances. AFRL plans to launch five to eight scramjet-powered free-flying vehicles in flight tests scheduled for December 2008 and January 2009.
Air Force Chief of Staff Gen. Kenneth S. Wilsbach told lawmakers Apr. 30 that the service’s biggest airlifter, the C-5 Galaxy, has a 37 percent mission capable rate—one of several challenges facing the mobility fleet.