X-15 flying Mach 6!!!

The experimental X-15 Waverider aircraft is being readied to make a Mach 6 flight (six times the speed of sound) over the Pacific ocean, according to the Department of Defense. A cross between an airplane and a rocket, the Waverider is so-named because it stays partly aloft from the lift created by its own shock wave. (Continues on link) (www.airport-data.com) さらに...