Lockheed Martin's Sikorsky has successfully flown its "rotor blown wing" uncrewed aerial system in both helicopter and fixed-wing flight modes, it announced Monday. The 115-pound twin-prop drone ...

WILLISTON, N.D. (KUMV) - Williston will soon have a local fixed-wing air ambulance service provider. City officials announced Care Flight will operate in Williston this summer. It will be staffed ...

With these flights, they became the first to successfully pilot a power-driven, heavier-than-air machine ... the idea of twisting the entire wing, or wing warping. The twisting caused one end ...