F - Mech Eng,Light,Heat,Weapons – 03 – D
Patent
F - Mech Eng,Light,Heat,Weapons
03
D
26/150
F03D 1/06 (2006.01) B29C 53/58 (2006.01) B29C 53/80 (2006.01) F01D 5/28 (2006.01)
Patent
CA 1165104
Abstract of the Disclosure The manufacture of large scale wind turbine blades is accomplished by winding composite fiber materials onto a mandrel to form the desired airfoil shape. The winding process requires that the fibers always maintain contact with the mandrel surface. If the surface is concave the fibers will form a bridge over the concave surface por- tion which produces a void. This invention avoids bridg- ing by analysis of the mandrel surface design including the steps of defining a plurality of coordinate points on the sur- face prior to winding thereof, and determining if a concavity will occur in the fiber winding plane passing through each coordinate point. If a concavity is located, the mandrel design coordinate point at the concavity is modified to elim- inate the concavity and provide a continuous flat or convex surface in the fiber winding plane. The process can be auto- mated by clerical or computing methods, and is repeated for each coordinate point until bridging is substantially eliminated.
339465
Swabey Ogilvy Renault
United Technologies Corporation
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