-Air-launched from a B-52, the X-15 reached a record-breaking speed of Mach 6.7 and flew high enough to earn astronaut wings for eight of its pilots. -While never intended as a weapon, the X-15 was a ...
Bold, black and blazing fast: The North American X-15 was a plane unlike any other. And although it first flew over 60 years ago, it is still the quickest manned aircraft ever to fly. Shaped more like ...