HELICOPTER SWASHPLATE Russian patent published in 2020 - IPC B64C27/605 B64C27/54 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering and can be used in helicopter control system. Main rotor swashplate automatic device comprises rotary plate (6) with blades turn rods (7) connected to drive (10) and installed through bearing on non-rotating external ring of cardan (5), to which there are pivotally connected rods of longitudinal (13) and transverse (14) controls and connected via bearings with inner ring of cardan (4), slider (2). Ear (3) is connected via bearings with lever of common pitch (11) with pivots of longitudinal (8) and transverse (9) controls hingedly fixed on it, each of which is also pivotally connected to tie-rods of longitudinal (13) and transverse (14) controls and to bracket of common pitch lever (12). At that, in swashplate, selection of ratio of arms of rockers a, b, a1, b1 of longitudinal and transverse controls is used, which are related to corresponding sizes of arrangement of fixation axes of said rockers on lever of common pitch c, d, c1, d1 proceeding from conditions a/b = c/d; a1/b1 = c1/d1.

EFFECT: enabling elimination of dynamic cross communication in the common pitch channel and reducing the load acting on the actuator in the common pitch channel.

1 cl, 6 dwg