Abstract: In a first aspect of the invention there is provided a method of manufacturing a wind turbine blade. The method comprises providing a mould for a shell of the wind turbine blade, the mould extending in a longitudinal direction from a root end to a tip end; providing a plurality of elongated root inserts; providing a root plate with a plurality of arcuately arranged connection points; at the connection points, connecting the root inserts to the root plate, such that the connected root inserts jointly form a contour of a portion of a root section of the wind turbine blade; and positioning the root plate relative to the mould in order to place the contour formed by the root inserts at least partially into the mould. The method further comprises providing a spacer having a decreasing thickness, and the connecting of the root inserts to the root plate comprises providing the spacer between the root inserts and the root plate.

Abstract: A method of making a prefabricated root section (26) for a wind turbine blade (10) is described. The method comprises: providing a male mould (28) extending longitudinally in a spanwise direction between an inboard end (30) and an outboard end (32) and extending transversely in a chordwise direction between a leading edge (34) and a trailing edge (36), the male mould (28) defining a male mould surface (38) of convex curvature in the chordwise direction; providing a root plate (48) having one or more root inserts (50) projecting therefrom, the or each root insert (50) being arranged along an arcuate path; arranging one or more inner fibrous layers (40) on the male mould surface (38); arranging the root plate (48) at the inboard end (30), of the male mould (28) such that the or each root insert (50) overlays an inner fibrous layer at the root end of the mould (28).

Abstract: A method of making a prefabricated root section (26) for a wind turbine blade (10) is described. The method comprises: providing a male mould (28) extending longitudinally in a spanwise direction between an inboard end (30) and an outboard end (32) and extending transversely in a chordwise direction between a leading edge (34) and a trailing edge (36), the male mould (28) defining a male mould surface (38) of convex curvature in the chordwise direction; providing a root plate (48) having one or more root inserts (50) projecting therefrom, the or each root insert (50) being arranged along an arcuate path; arranging one or more inner fibrous layers (40) on the male mould surface (38); arranging the root plate (48) at the inboard end (30,) of the male mould (28) such that the or each root insert (50) overlays an inner fibrous layer at the root end of the mould (28).