The X-15 was a key bridge between conventional atmospheric flight and spaceflight. The North American X-15 is one of the most groundbreaking aircraft ever created in the history of aviation and space ...

America built the X-15 to get flight data in the unknown between airplanes and spacecraft. -The rocket-powered, Inconel-X research plane, air-dropped from a B-52 and driven by a throttleable XLR99, ...

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 five ...