It's of a model used in wind tunnel tests of its entry in DARPA's Speed and Runway Independent Technology (SPRINT) program. Rotorcraft like helicopters have the advantage of vertical takeoffs and ...

Bell has completed wind tunnel testing of its X-plane model at the National Institute for Aviation Research (NIAR) at Wichita State University, part of the DARPA (Defense Advance Research Project ...

Bell has completed wind-tunnel testing of its proposed X-plane for a DARPA project to demonstrate a high-speed vertical-takeoff-and-landing aircraft. The company is competing against Boeing ...

The US Defense Department’s research arm, DARPA, is breathing new life into the ground effect vehicle with its Liberty Lifter project, echoing the legacy of the Soviet Ekranoplan, once dubbed ...