After the first test flights in 2025, Lockheed Martin will transfer the plane to NASA. Then, after acoustic testing over ...

This Is Strange: The X-43A ... of speed when traveling but with a more airplane-like experience. NASA married a scramjet to an experimental plane, called the X-43A Hyper-X. The X-43 began its ...

Powered by two jet engines, it boasts a top speed of Mach 2.34 ... is expected to debut in 2025. NASA's X-43, an experimental scramjet that achieved an unprecedented speed of Mach 9.6, or 11,854 ...