FIELD: aviation.
SUBSTANCE: invention relates to the field of aviation, in particular to designs of main rotors of aircrafts. Rotor (3, 3’, 3’’, 3’’’) for the aircraft contains bushing (5) rotated around axis (A) with a group of blades (9), column (6) connected to a drive element of aircraft (1) and connected to bushing (5) for rotating bushing (5) around axis (A), and damping means (15; 20a, 20b; 21a, 21b) for damping vibration transmission to column (6) in a plane perpendicular to axis (A). Damping means (15; 20a, 20b; 21a, 21b) contain at least first mass (20a, 20b) and second mass (21a, 21b) that can eccentrically rotate around axis (A) with first and second rotation speed ((N-1)*Ω; -(N+1)*Ω), respectively. First mass (20a, 20b) and second mass (21a, 21b) are functionally connected to column (6) for generating, respectively, the first and the second damping force on column (6) having a main component in the direction radial to axis (A). Rotor (3, 3’, 3’’, 3’’’) contains transmission unit (19, 19’, 19’’, 19’’’) that is located between column (6) and first and second masses (20a, 20 b; 21a, 21b) so that to rotate first and second masses (20a, 20b; 21a, 21b).
EFFECT: 15 cl, 14 dwg
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Authors
Dates
2021-10-18—Published
2018-06-28—Filed