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.
Happy Birthday US Air Force: 78 Today
Sept. 18, 2025
Seventy-eight years ago today, on Sept. 18, 1947, Supreme Court Chief Justice Fred Vinson swore in Stuart Symington as the first ever Secretary of the Air Force, and the Air Force officially became the first new military service since the Revolutionary War.