The North American X-15 is a hypersonic rocket-powered aircraft. It was operated by the United States Air Force and the National Aeronautics and Space Administration as part of the X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s, reaching the edge of outer space and returning with valuable data used in aircraft and spacecraft design. The X-15’s highest speed, 4,520 miles per hour (7,274 km/h; 2,021 m/s), was achieved in October 1967, when William J. Knight flew at Mach 6.70 at an altitude of 102,100 feet (31,120 m), or 19.34 miles.
❤️ Subscribe Our Channel to Update More Videos everyday: https://www.youtube.com/channel/UCajKgpxKwbuhR2PkI7e-WUA?sub_confirmation=1
❤️ Our Social Media:
☛ Facebook: https://www.facebook.com/usmilitarypwr/
☛ Pinterest: https://www.pinterest.com/usmilitarypower/