DEVICE FOR ASSEMBLING THE VOLTAGE TO THE SHAFT OF THE ROTARY-WING AIRCRAFT Russian patent published in 2018 - IPC B64C27/35 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation, in particular to structural design of the shafts of the rotary-wing aircraft. Device for fixing the blades to the shaft of the aircraft comprises a hub consisting of upper and lower bodies, as well as two fingers, on each a spherical bearing is fixed. On the bearing housing a pipe is fixed, to the second end of which a pin is attached. Pins are connected with each other by two torsions, made in the form of bags of rectangular metal bands, located symmetrically about the axis of the shaft and the axis of the blades. Torsions are also connected to the hub, and in addition each trunnion has a projection facing the blade, made with at least two horizontally arranged holes, which are detachably connected to a transition device attached to the blade.

EFFECT: reduction in the load on the hub, the small weight of the hub, the possibility of folding the blades along the rotor shaft is provided.

7 cl, 3 dwg