Parachute cyclorotor
Abstract
Typical rotors for flying vehicles are a pair of propellers. To achieve sufficient thrust, they must rotate at high speed, which is a source of high viscous friction. The rotor we propose achieves the same thrust at much slower speeds, which reduces viscous friction and increases its efficiency.
Idea
The rotor consists of airfoils on rotating booms. When the airfoil moves against the lift it is supposed to generate, it is (almost) perpendicular to it. It therefore pushes the medium with its entire surface. When the airfoil moves in the direction of the lift, it is (almost) perpendicular to the boom and offers the least possible resistance to the medium.
Formal status
A patent for this invention is pending.