We got a glimpse at what a new cross between a helicopter and a jet aircraft might look like after Bell released a new image. It's of a model used in wind tunnel tests of its entry in DARPA's Speed ...
Found and Explained Official on MSN

The VTOL plane that was easier than a jet - Bell X-22

Bell and Lockheed built the X-22A around four tilting ducted fans, aiming for a compact transport that could lift off vertically, fit on ships without folding wings, and transition smoothly into ...
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. DARPA (Defense ...
The Pentagon’s Defense Advanced Research Projects Agency (DARPA) selected Bell Textron to proceed with Phase 2 of its Speed and Runway Independent Technologies X-plane project, which involves a ...
The advances of Aurora’s demonstrator ensure that the company’s fan-in-wing VTOL experiments will extend well beyond DARPA’s SPRINT. Aurora Flight Sciences, a Boeing subsidiary, is poised to redefine ...