HELICOPTER ROTOR HEAD Russian patent published in 2017 - IPC B64C11/06 B64C27/39 

FIELD: aviation.

SUBSTANCE: rotor head comprises the blades equipped with the move stopping device, the hub with the flexible panels and the cutouts with the holes for the attachment of the blades. The cutouts are connected to the panels through the locating spherical bearings. Every cutout is accomplished with the root and end lugs at the ends and on the side of the last mentioned has the bearing assembly on the elastomeric damper. This bearing assembly is compatible with the tapered to the panel periphery axis at the end. Every cutout is connected to the panel bottom with the root lugs and the vertical pin through the thrust spherical joint in such a way that the coincident flap, drag and feathering hinge is formed at the junction. The spherical arm hinge of the blade tank is installed in the root section of every cutout. The hinge axis passes through the fulcrum of the thrust spherical joint, and the blade control rod passes along the helicopter drive shaft.

EFFECT: rotor head reliability, strength and durability enhancement.

5 cl, 6 dwg