These Images Document The Heat Damage To The X-15A Hypersonic Aircraft After Its Record Breaking Mach 6.7 Flight
Aerodynamic heating at Mach 6.72 (4,534 mph) almost melted the airframe. On…
That Time An X-15 Rocket Plane Entered Hypersonic Spin At Mach 5 And Broke Apart Killing USAF Test Pilot.
U.S. Air Force test pilot Maj. Michael J. Adams was killed during…
