Vertical lift manufacturer Bell has delivered a test article to the US Air Force (USAF) that aims to demonstrate the company’s novel concept for a jet-powered vertical take-off and landing (VTOL) ...

LEELANAU COUNTY — Northport High School students had fun in the snow Wednesday while testing out sleds they designed and built themselves. The race is part of a project based class put on by teacher ...

With the rotor stopped, the blades are stowed in the sled test at Holloman. Credit: Bell Bell has completed sled tests of the stop/fold rotor concept for a high-speed vertical-takeoff-and-landing ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Preview this article 1 min Calspan had big growth ...