U.S. Air Force to develop new hypersonic jet

The U.S. Air Force is looking to create a new hypersonic aircraft, building upon the success of hypersonic scramjet X-51A's test flight in 2013. Hypersonic is more than just breaking the sound barrier. Hypersonic speeds are classified as Mach 5 through Mach 10, which is approximately five to ten times faster than the speed of sound. Hypersonic aircraft are so …