ROOT BUSHING FOR A WIND TURBINE ROTOR BLADE, A WIND TURBINE ROTOR BLADE, A WIND TURBINE AND A METHOD FOR MANUFACTURING A WIND TURBINE ROTOR BLADE FOR A WIND TURBINE

摘要

A root bushing for a wind turbine rotor blade is provided herein. The root bushing includes a cylindrical shape with longitudinal grooves. The root bushing has the advantage that a bonding area between the root bushing and the fiber composite material is enlarged in comparison to known cylindrical root bushings. In another embodiment, a method for manufacturing a wind turbine rotor blade for a wind turbine is provided. The method includes a) providing (S1) a root bushing, wherein the root bushing has a cylindrical shape with longitudinal grooves, b) providing (S2) a unidirectional fiber weave, c) wrapping (S3) the unidirectional fiber weave around the root bushing such that roving yarns of the unidirectional fiber weave are placed in the grooves, and d) impregnating (S4) the unidirectional fiber weave with a resin.