DARPA has assigned the designation X-76 to the Speed and Runway Independent Technologies (SPRINT) project, a Bell proof-of-concept technology demonstrator for a high-speed tiltrotor. The DARPA ...

Planned to fly in 2028, the X-76 will explore technologies for fast-flying runway-independent aircraft with folding rotors, crewed and uncrewed.

The U.S. military is developing a new experimental aircraft known as the X-68A and looks a lot like a cruise missile that is also capable of launching its own missiles.

Aviation, as humanity has been experiencing for the past 120 years or so, means an aircraft needs engines to take off and fly, wings to keep it in the air, and physical control surfaces (stabilizers, ...