X-51A Waverider is owned by the U.S. Air Force and recently reported to reach six-times the speed of sound in terms of its velocity. And also reported to overcome the speed of Mach 6, an aircraft with a Scramjet engine tested to know its capacity and future capability to handle tough performances in air. According to report, this test has been cancelled due to unknown reason but somehow, there are still source on the web that thrills everyone aware of this craft.
Furthermore, X-51A Waverider doesn't reach the speed of Mach 9.8 but this full automated plane can still do more out of the current test result. Let us wait for more after this break and from more flights in future tests.