1962: Maj Robert White flies X-15 No. 3 with the XLR-99 rocket engine on the first spaceflight by a manned aircraft: Altitude 58.7 miles (314,750 ft.), speed in excess of Mach 6 (3,784 mph).
1962: Maj Robert White flies X-15 No. 3 with the XLR-99 rocket engine on the first spaceflight by a manned aircraft: Altitude 58.7 miles (314,750 ft.), speed in excess of Mach 6 (3,784 mph).