WIND TURBINE BLADE TUBULAR SPAR FABRICATING METHOD

摘要

A method of fabricating a wind turbine blade tubular spar, wherein the tubular spar (22) extends along a given axis (A), is made of reinforced polymer material having fibres arranged in at least two directions, and a polymer matrix incorporating the fibres, and has two caps (23) and two webs (24); the method including the steps of : molding and cross-linking at least part of a cap (23) or web (24) in composite material; molding and cross-linking an L-shaped structure (25), which has two opposite parallel flanges (30, 37), and at least partly incorporates the previously molded, cross-linked cap (23) or web (24) of composite material; repeating the above steps to mold and cross-link a further L-shaped structure (25); and joining the two cross-linked, L- shaped structures (25), with the flanges (30, 37) positioned facing in pairs.