8. Bell X-2 Starbuster 2,094mph
Photo: worldlifestyle
This aircraft and the program it represented came to an unfortunate and unexpected end when on what would be its final flight the test pilot pushed it up over Mach 3 and while attempting to make a turn the plane spun out of control and crashed. It was designed to investigate aerodynamics of supersonic flight and was the first manned aircraft to reach Mach 3 with a top speed of 2,094mph.