Patent ID: 8038408
Filing Date: 2011-10-18
Classification: B29C,B29D,B29L,D03D,F01D,F05C,F05D,Y02E,Y02T,Y10T

Abstract:
1. A method of manufacturing a composite aerofoil, the composite aerofoil comprising: a leading edge; a trailing edge; a concave pressure surface wall; a convex suction surface wall; and a tip, the method comprising: weaving a three-dimensional arrangement of reinforcing fibres, the three-dimensional arrangement of woven reinforcing fibres defining a plurality of cavities, the plurality of cavities being spaced apart between the leading edge and the trailing edge, the composite aerofoil comprising at least one web extending between, and being secured to, the concave pressure surface wall and the convex suction surface wall to produce a Warren girder structure, the three-dimensional arrangement of woven reinforcing fibres being arranged to produce the concave pressure surface wall, the convex suction surface wall and at least one web to produce the Warren girder structure; and infiltrating a matrix material around the three-dimensional arrangement of woven reinforcing fibres.