Aerodynamic heating at Mach 6.72 (4,534 mph) almost melted the airframe. On Oct. 3 1967 the North American X-15A-2 serial number 56-6671 hypersonic rocket-powered research aircraft achieved a ...

The second X-15 rocket plane (56-6671) is shown with two external fuel tanks which were added during its conversion to the X-15A-2 configuration in the mid-1960’s. SPLOID is delicious brain ...

The second X-15 rocket plane is shown with two external fuel tanks which were added during its conversion to the X-15A-2 configuration in the mid-1960's. X-15 Cockpit . NASA/U.S. Air Force .

Three X-15 research aircraft were built and flown, completing a total of 199 research flights. The National Air and Space Museum has the historic X-15 #1, Air Force serial 56-6670. The X15 #2 (56-6671 ...

X-15A-2 (AF Ser. No. 56-6671) is at the National Museum of the United States Air Force, at Wright-Patterson Air Force Base, near Dayton, Ohio. It was retired to the museum in October 1969.[23] ...

The X-15A-2 (USAF Serial No. 56-6671) is on display at the National Museum of the United States Air Force at Wright-Patterson ...

In 1967, William “Pete” Knight made history at the stick of his North American X-15A-2 rocket-powered aircraft when he reached a speed of Mach 6.7, or around 5,140 miles per hour, at an ...

North American X-15A-1 (s/n 56-6670) in Smithsonian National Air and Space Museum collection: North American X-15, A19690360000. See related collection North American X-15 Stereo Color Slides, ...

X-15A-2 Soars in Research Flight NASA/U.S. Air Force This photo shows the X-15A-2 (56-6671) on a research flight with a dummy ramjet engine attached to the bottom of its wedge-shaped vertical tail.