National Security Journal on MSN
The Mach 6.7 X-15 ‘Hypersonic Rocket Plane’ Has a Message for the U.S. Air Force
The X-15 was a rocket-powered research aircraft that pushed human flight to the edge of space and deep into the hypersonic ...
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 ...
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 ...
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