Patent ID: 7108484
Filing Date: 2006-09-19
Classification: F01D,F04D,Y10S

Abstract:
1. A packing member for retaining a root of a blade in a fan in a curved socket arranged on a periphery of a rotor disk, the blade having a convex flank and a concave flank, the packing member being in a form of a curvilinear plate constituted by a metal structure having hollowed out portions filled in by overmolding with a semi-rigid elastomer material, on a lateral edge situated on a concave side of the blade between an upstream end zone and a downstream end zone, which end zones are of entirely metal structure, on a lateral edge situated on a convex side of the blade between the end zones and a central zone, that is essentially of metal structure, and on two top portions of the packing member that extend between the two elastomer lateral edges on either side of the metal central zone, wherein the metal structure further comprises a bottom recess extending over its entire surface between the upstream end zone and the downstream end zone, and wherein the bottom recess is connected to the upstream end zone and downstream end zone by crescent-shaped portions.