ROTOR SYSTEM OF ROTARY-WING AIRCRAFT Russian patent published in 2021 - IPC B64C27/52 B64C27/615 B64C11/46 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation, particularly, to designs of aircraft rotors. The rotor system of a rotary-wing aircraft is comprised of a reducer with an output shaft, a guide pipe mounted on the reducer, a slider configured to move vertically along the guide pipe, a swashplate installed hingedly on the slider, with an inner ring and an outer ring. The rotor is made in form of two paired two-bladed rotors spaced apart along the vertical axis, installed through a swing assembly with a transverse swing axis on one output shaft of the reducer at different angles to each other. Each rotor comprises a sleeve body whereto the axes of the arms of the blades are rigidly attached, wherein the arms of the blades are installed on each axis on angular contact conical bearings, at the ends whereof the blades are fixed. The rotor system comprises a toggle control system made configured to control the thrust force of the main rotor in magnitude and direction by means of a common pitch lever and lateral and longitudinal control levers.

EFFECT: reduced mutual influence of air flows from the blades and loading of the common hinged swing assembly are ensured.

6 cl, 4 dwg