What is the X-15?

Answer 1

the X-15 was a top secret rocket powered space plane that was first flown in 1959. it was launch from the wing of a B-52 like a missile and could reach Mach 6.72. there were three basic versions of the aircraft. One x-15 crashed on landing killing the pilot.

Answer 2

The X-15 was a rocket-powered aircraft used for research and testing in the 1960s. It set speed and altitude records, reaching speeds of over 4,500 mph and altitudes of over 350,000 feet. It played a significant role in advancing aerospace technology and understanding high-speed flight.