Stratolaunch has finally found a use for the world's largest airplane. Twice in the last five months, the company launched a hypersonic vehicle over the Pacific Ocean, accelerated it to more than ...

NASA's rocket-powered X-15 experimental plane made its first glide flight. The X-15 rocket plane was part of a series of ...

In the early space race, the X-15 stood as a radical leap in aerospace engineering—an aircraft that broke speed, altitude, ...

Stratolaunch has finally found a use for the world’s largest airplane. Twice in the past five months, the company launched a hypersonic vehicle over the Pacific Ocean, accelerated it to more ...

The X-15, technically, is an aircraft. But in many respects, the X-15 is just a rocket with some wings and a cockpit. Built around the Reaction Motors XLR99, the X-15 was uniquely powerful ...

A big part of that knowledge came from the X-15 hypersonic rocket-powered research aircraft. According to NASA, the joint research program was run by the U.S. Air Force, Navy, and North American ...

Still the fastest airplane ever flown, the North American X-15 earned its title 40 years ago, when on October 3, 1967 Air Force Major William “Pete” Knight flew the rocket-powered aircraft to ...

The X-15 rocket-plane built by North American Aviation ... “beyond the envelope of knowledge,” flying higher and faster than a manned aircraft has ever flown. The rocket engine will have ...

The aircraft landed on skids rather than ... Developed in the late 1950s and flown throughout the 1960s, the X-15 was a hypersonic rocket-powered research plane. Operated jointly by the United ...