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 ...

For VTOL and hover operations, the drone's top and bottom bodywork opens up in a series of slats, exposing a greater percentage of the rotors' swept area to airflow and deriving maximum lift. Then, as ...

Sikorsky’s rotor blown wing is a hybrid-electric flying wing with semi-articulated rotors for control in hover. Credit: Sikorsky Sikorsky is getting a second chance to build an advanced rotorcraft for ...

From 'sleep mode' engines to foldaway wingtip rotors, the biggest players in VTOL are ditching 50-year-old designs for ...

Sikorsky on Monday detailed recent successful demonstrations with its “rotor blown wing” unmanned aircraft system (UAS), flying its prototype in both helicopter and “winged aircraft” mode through a ...

About a year ago the Defense Advanced Research Projects Agency (DARPA) introduced to the world the companies that were tasked with working on something called the AdvaNced airCraft Infrastructure-Less ...

The Yakovlev VVP-6 was one of the wildest helicopter concepts ever proposed, a giant multi rotor machine powered by 24 ...

The concept of vertical take-off and landing (VTOL) aircraft has been circulating for decades, but only these past few years have they become a much-needed transportation tool that could play a major ...

eVTOL (Electric Vertical Take-off and Landing) craft are some of the more exciting air vehicles being developed lately. They aim to combine the maneuverability and landing benefits of helicopters with ...