Costruzioni Aeronautiche Giovanni Agusta S.p.a.

Pier Luigi Castelli

Vittorio Caramaschi

A rotor for helicopters, in which a central hub supports a plurality of radial blades connected thereto, each of which blade is provided with a surface rigidly connected to it and able to cooperate with respective abutment elements supported by the hub and movable with respect to this latter in a substantially horizontal plane to limit the oscillations of the respective blade in a horizontal plane between limits which are variable as a direct function of the angular velocity of the rotor itself.

Helicopter rotor

A helicopter rotor hub having a lobed shape defining a plurality of bridge structures each allowing the attachment of a respective blade; each bridge structure is formed of superimposed sections of three annular bands, of synthetic material, the intermediate one of which forms an outer frame extending around the whole of the periphery of the hub, while the other two define one of the said lobes and connect the said outer frame to an inner metal structure.

Helicopter rotor hub

A helicopter rotor in which a central plate-like hub is provided with a plurality of axial apertures uniformly distributed around a central axis of rotation and each defined radially outwardly by a supporting peripheral bridge connected to a respective blade by a U-shape structure extending through the said aperture and coupled to the associated bridge by an elastomeric coupling; each U-shape structure being coupled to a respective radial projection of the hub by a further elastomeric coupling.

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Busto Arsizio, Italy

Pier Luigi Castelli