COAXIAL BEARING SYSTEM Russian patent published in 2020 - IPC B64C27/54 B64C27/72 B64C27/80 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering, particularly, to helicopter carrier system with coaxially arranged two rotors of opposite rotation. Coaxial bearing system consists of reduction gear with two concentrically located shafts of opposite rotation. Support shafts are mounted on shafts. Control system of the rotors comprises two upper and lower swash plates automatic connected by rods and movable in axial direction. At that, lower swash plate is suspended on three points of control wiring channels and spherical support. Leads of lower rotor blades are connected by tie-rods directly to lower swash plate, and the drives of the upper rotor blades are connected by means of tie-rods with double-arm rockers mounted on the shaft movably along its axis, and through them by means of rods are connected to the upper swash plate. General and differential shafts pitch control system is made in the form of differential summing system of common and differential pitch, which consists of two pairs of double-armed rockers.

EFFECT: wider space in the cabin for comfortable accommodation of passengers, elimination of loss of control stiffness in suspension of swash plate, as well as eliminates interference of common and longitudinal-transverse pitch.

3 cl, 3 dwg