Abstract: A spar (30) for a wind turbine blade. The spar comprises a plurality (typically three or more) beams (33) arranged side-by-side. Each beam has a longitudinal web (32), a flange (31) at either longitudinal edge. The spar may be made up of a number of modules connected to one another primarily via overlapping shear webs.

Abstract: Apparatus and methods related to wind turbine blades and manufacturing of the blades.

Abstract: A wind turbine blade is disclosed, at least 50% of the surface of which is covered with a self-adhesive, thermoplastic film. A method of manufacturing and repairing such a wind turbine blade is also disclosed. A two layer thermoplastic film suitable for covering the surface of a wind turbine blade is also disclosed. The film comprises a surface layer and a lower layer. The surface layer comprises 50% to 85% of polyvinylidene fluoride (PVDF), wherein up to 30% of the polyvinylidene fluoride may be replaced by hexafluoropropylene (HFP); and 10% to 45% polymethyl methacrylate (PMMA). The lower layer comprises 10% to 45% of a polyvinylidene fluoride (PVDF) polymer, wherein up to 30% of the polyvinylidene fluoride may be replaced by hexafluoropropylene (HFP); and 50% to 85% PMMA. Optionally the surface and/or lower layer comprises up to 8% UV stabilisers/absorbers; up to 10% matting agent; and up to 40% of an inorganic pigment.

Abstract: A spar (30) for a wind turbine blade. The spar comprises a plurality (typically three or more) beams (33) arranged side-by-side. Each beam has a longitudinal web (32), a flange (31) at either longitudinal edge. The spar may be made up of a number of modules connected to one another primarily via overlapping shear webs.

Abstract: There is provided a wind turbine blade at least 50% of the surface of which is covered with a self-adhesive thermoplastic film. By applying a self-adhesive thermoplastic film to the blade, the need for a gelcoat or the paint is eliminated. It is estimated that the thermoplastic film will take a similar time to apply as the gelcoat and/or paint. However, it does not require any further treatment once it has been applied thereby reducing significantly the work involved in finishing the blade. Also, the thickness of the film is precisely controlled in advance of its application to the blade ensuring that a surface with a uniform thickness is produced.

Abstract: Apparatus and methods related to wind turbine blades and manufacturing of the blades.