HELICOPTER Russian patent published in 2021 - IPC B64C27/52 B64C27/06 

FIELD: aviation; helicopter carrying systems.

SUBSTANCE: helicopter contains a main rotor (hereinafter – MR) connected to the engine, a propeller bushing connected to the fuselage by means of a rod with hinges at the ends and six extensions of controlled length. The upper ends of these extensions are attached to the non-rotating base of the MR bushing at three points located along a triangle covering the hinge of the attachment of the specified rod. The lower ends of the extensions are similarly attached to the fuselage. The MR blades are fixed by hinges to the power ring that performs the function of the drive shaft, and the engine and gearbox are installed inside the specified power ring. The helicopter contains two steering propellers, with electric drives and guard rings, installed in the tail and bow parts of the fuselage.

EFFECT: ability to control a helicopter with a fixed blade pitch main rotor, improving reliability and safety of the helicopter.

3 cl, 2 dwg