There's a new X-plane in town. Bell Textron's tilt-rotor aircraft being built for DARPA's Speed and Runway Independent Technologies (SPRINT) program, which aims to combine the features of a helicopter ...
The NASA X-15 rocket plane reached speeds of Mach 6.7 and altitudes of 300,000 feet, flying to the edge of space and back.
The new X-plane is now officially known as the X-68A. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates on ...
Aurora Flight Sciences and DARPA are continuing the assembly of the X-65 CRANE demonstrator, targeting a first flight by 2027 ...