Composite hub for a helicopter rotor

摘要

A composite hub for a helicopter rotor, the hub having the form of a flat plate of laminated structure provided with a plurality of through holes each able to house an elastomeric coupling for connection of an associated blade, and a central layer of the said plate being constituted by a force distributor element in contact with each surface of which there is disposed at least one layer constituted by radial elements extending outwardly of an axis of rotation of the hub and an annular element disposed in contact with the free ends of the said radial elements; these latter being connected to the radial elements disposed on the other side of the distributor element by means of axial elements (25) defining part of the surface of the said aperture.