Horizon Aeronautics is prototyping an eVTOL hovercycle concept that uses a complex and interesting split-swashplate "Blainjett" variable pitch rotor system that only exposes half of each fan. Very odd ...

What does it take for a quadcopter to carry a 10-kg (22-lb) payload and fly for three hours straight? It takes petrol power – and a clever variable pitch rotor system that makes this gas-powered drone ...

Barring the smallest manned airplanes, most aircraft that are pulled around by a prop have variable pitch propellers. The reason for this is simple efficiency. Internal combustion engines are most ...

Straight from the Aerospace Controls Laboratory comes a variable-pitch quadrocopter designed by [Mark Cutler] and [Jonathan P. Howe]. While real, full-sized helicopters always have variable pitch ...

Tcab Tech says the E20 adopts China’s first five-blade large-size variable pitch rotor system. The rotor blades are made of high-strength composite materials. Tests and other works have verified that ...

A slew of patent awards for Bell over recent months – including a biplane tiltrotor, a pusher propeller drivetrain and an anti-torque tail rotor that can be turned through 90° – highlight the range of ...