MAIN ROTOR HUB Russian patent published in 2024 - IPC B64C27/35 B64C27/48 B64C11/06 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering, particularly, to helicopter rotors. Main rotor hub consists of assembled hub, plate elastic elements of two types, performing functions of axial and horizontal hinges, traverses with support spherical hinges, adapters compressing the package of elastic element, performing the function of axial hinge and serving for attachment of the blade. Packs of plate elastic elements performing the function of horizontal hinges are compressed in their middle part by hub parts, and at their ends – by parts of tips of unloading hinges, overhang limiter. Plate resilient elements are made in two configurations, wherein the resilient element of one configuration provides the operation of the axial hinge, and the resilient element of the second configuration provides the operation of the horizontal hinge.

EFFECT: providing the possibility of setting independently different degrees of rigidity of elastic elements of two types, which makes it possible to select rigidity of the package performing the function of horizontal hinge by selecting the required number of single elements regardless of characteristics of the package of elastic elements performing the function of perception of centrifugal force of the blade in the axial hinge.

1 cl, 9 dwg