BLADE PROPELLER Russian patent published in 2022 - IPC B63H1/20 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used, for example, in ship propellers. Blade propeller comprises blades fixed on the propeller hub through elastic elements made in the form of metal plates installed between the blades and the hub and located in the radial direction in the plane of the blades. Hub is made with inner cavity, and in it dynamic dampers are installed for each propeller blade. As dynamic vibration dampers there can be used dampers of vibrations with viscous friction, liquid or pneumatic type, with piezoelectric converter, friction type, inertial type and combination of the above vibration dampers.

EFFECT: reduced level of vibrations of the blade screw hub, as well as reduced acoustic pollution of the environment.

9 cl, 1 dwg