Airbus Helicopters

Eurocopter

Bernard Michel

Laurent Bianchi

Jacques Joseph Gaffiero

Nicolas Isidore

Julien Jaume

Florian Gregoire

A blade () provided with a fitting () for fastening to a hub and with an airfoil element () having a spar () extending spanwise from an attachment zone () towards a distal zone (), said attachment zone () surrounding a centrifugal force transmission bushing () that is connected to said fitting () by a through pin (). The blade comprises a twisting force transmission member () provided with a first half-shell () and with a second half-shell () that together surround said attachment zone (), each half-shell () having a perforated first portion (&#x2033;) giving visual access to said bushing () when said airfoil element is removed from the fitting, and a second portion (&#x2033;) co-operating with a torsion box () surrounding said distal zone (), said transmission member () being secured to said fitting in rotation about a torsion axis (AX) of the blade ().

Blade and method of fabricating said blade

A rotorcraft blade is provided having at least one spar and an outer covering. At the root of the blade, the spar is subdivided into at least one bottom tape and at least one top tape. The blade further includes a hollow cuff whose outer wall includes the outer covering secured to the bottom and top tapes.

Blade having an integral cuff, and a rotorcraft rotor provided with such a blade

Growing community of inventors

Peyrolles en Provence, France

Bernard Michel