ROTOR Russian patent published in 2008 - IPC B64C27/32 

FIELD: aircraft engineering.

SUBSTANCE: rotor comprises fixed casing (7) coupled, via bearings (5), (9), with lower shaft furnished with spherical surfaces in contact with mating spherical surfaces of intermediate (3) and upper (2) shafts. Intermediate (3) and upper (2) shafts are coupled via a joint transmitting rotation. Upper (2) and flexible (1) shafts are coupled with the rotation-transmitting joint that features an axial locking. Flexible (1) and lower (4) shafts are coupled by the rotation-transmitting joint to shift together axially. Blades (13) with axial pivots (12) are attached to intermediate shaft (3). The axles of pivots (12) are deflected from the plane of rotation by the taper angle. The said axial pivots (12) are linked by dogs (11) with control tie rods (10).

EFFECT: simpler design of rotor, lower loads onto rotor bushes, longer life.

9 dwg