Patent ID: 8043067

Claim:
A wind turbine blade comprising: an outer skin layer formed of fiber-reinforced plastic; a plurality of main structural members formed of fiber-reinforced plastic integrally with said outer skin layer to extend in a blade length direction; an inner skin layer positioned inside said outer skin layer and coupled integrally with said outer skin layer; and a core member sandwiched between said outer skin layer and said inner skin layer, wherein said plurality of main structural members include: a plurality of main dorsal structural members positioned on a dorsal side of said wind turbine blade; and a plurality of main ventral structural members positioned on a ventral side of said wind turbine blade, wherein each of said plurality of main structural members include a plurality of integrated rectangular-shaped fiber cloths which are rectangular in the in-plane shape, wherein said core member has a main surface opposed to a blade surface of said wind turbine bladed and an end surface oblique to said main surface, wherein said end surface is positioned adjacent to one of said main structural members, and wherein said plurality of fiber cloths are positioned so that ends thereof are adjacent to said end surface, and have widths different from each other.