The North American X-15 was an experimental Air Force and NASA Hypersonic Rocket powered aircraft that was used to investigate materials, aerodynamic design, and control systems associated with ...

Keywords X15, test pilots, hypersonic flight, NASA, Joe Engel, rocket engine, Inconel X steel, space exploration, space shuttle, aviation history Email us at [email protected] if you have ...

It's used for experimental aircraft to test out new ideas ... the X-15 reached the edge of space at hypersonic speeds. The X-15 helped Nasa to develop the Mercury, Gemini and Apollo piloted ...