Patent ID: 8177933
Filing Date: 2012-05-15
Classification: B29C,B29L,F01D,F05D,Y02T

Abstract:
1. Method to manufacture a hollow, single-piece bladed disc in composite material, comprising the steps of: providing a ring-shaped core having an annular inner face, an outer annular face and two side faces, placing in position a first insert forming a ring having an outer surface in contact with the inner face of the core and an inner surface, arranging on the outer face of the core a plurality of second inserts each comprising a platform applied against the outer face of the core and at least one blade of the disc to be formed extending substantially radially outwards from the platform, winding a fibrous structure around the core, comprising turns each passing along a side face of the core, over a platform of a second insert, along the other side face of the core and over the inner surface of the first insert, the wound fibrous structure forming an assembly of the second inserts with the first insert, moulding the fibrous structure impregnated with a composition containing a resin, polymerizing the resin, and removing the core.