If helicopters didn't have tail rotors, they would spin in circles because they need a force pushing in the opposite direction as the main rotor.

The U.S. Marine Corps retired the CH-46 in 2015, but it's still used by other countries and the commercial sector. In its ...

A simulation of the "aerial screw" designed by Leonardo da Vinci in 1480 suggests it would use less power than modern drone ...

BMW’s latest axial flux motor patent locks in magnets with a unique metal package and axial stop, aiming for better performance, safety, and long-term durability.

Rotor Technologies, Inc., a developer of autonomous vertical takeoff and landing (VTOL) aircraft, unveils the R550X, the largest uncrewed civilian helicopter on the market, and begins production. The ...

The blades of propellers and wind turbines are designed based on aerodynamics principles that were first described mathematically more than a century ago.

Researchers used artificial neural networks (ANNs) to enhance damage detection in composite helicopter rotor blades. The study demonstrated high accuracy in load identification and damage ...

The main rotor of the doomed helicopter that crashed into the Hudson River was finally recovered Monday -- as investigators continue to probe what caused the deadly tragedy.

The aircraft was on a sightseeing flight when it suddenly broke apart in midair, its rotor blades falling separately toward the water.

We4Ce designs rotor blades for TouchWind’s floating one-piece rotor turbine Tiltable, liftable one-piece composite rotor design aims to withstand storm-force winds, boost energy yield and enable more ...