The X-15 wasn’t just a plane – it was a rocket with wings. Designed at the height of the space race, it became the fastest aircraft ever flown, reaching speeds of Mach 6.7 and altitudes over 350,000 ...
On October 3, 1967, the rocket-powered X-15 A-2 reached Mach 6.7, setting the fastest speed ever achieved by a piloted ...