An ice melting device for a blade, a blade and a wind turbine are provided. The ice melting device for the blade includes: a first heating portion; a first electrode and a second electrode, wherein the first electrode and the second electrode are arranged at two ends of the first heating portion in a length direction, respectively; and a connecting conductor, wherein the connecting conductor extends in a length direction, a first end of the connecting conductor is connected to the second electrode, and a second end of the connecting conductor and the first electrode are located at a same side. With the connecting conductor, power leads connecting to the first electrode and the second electrode are allowed be located at a same side, thereby, in a case that an old blade is modified, an increase of a layer thickness caused by the power leads may be greatly reduced.

A blade mould and a method for manufacturing a blade shell part of a wind turbine blade is disclosed. The blade mould comprises a first mould frame; a mould shell supported by the first mould frame and provided with a moulding surface that defines an outer shape of the blade shell part, wherein the mould shell has a longitudinal direction and comprises a root end mould part at a first end thereof; and a first deformation device for deforming the root end mould part of the mould shell. The method comprises arranging reinforcement material on the moulding surface of the root end mould part; deforming the root end mould part to a receiving configuration; inserting the root end insert in the root end mould part; and bringing the root end mould part to a moulding configuration.

A wind turbine composite laminate component and method for producing it is disclosed as initially assembling a laminated structure having at least two reinforced layers and a plurality of interleaf layers positioned adjacent to one of the at least two reinforced layers. Then placing the laminated structure into a mold where resin is sequentially and independently transferred into each of the plurality of interleaf layers. Then curing the transferred resin in the laminated structure to form a composite laminate component having the at least two reinforced layers, the plurality of interleaf layers, and cured resin.

A wind turbine blade comprises an external skin comprising tensioned fabric supported along a majority of the length of the wind turbine blade by two or more elongate fabric supporting members. The external skin is connected to each of the two or more elongate fabric supporting members.

A wind turbine blade includes at least one mandrel and a sock that covers the at least one mandrel. The sock includes a plurality of braided fibers within a matrix material. The fibers can be made of different materials. Also, stiffness of the sock can vary across the wind turbine blade. A method of manufacturing the wind turbine blade is also disclosed.

A rotor blade for a wind turbine is provided, wherein the rotor blade includes serrations along at least a portion of the trailing edge section of the rotor blade. The serrations include a first tooth and at least a second tooth, and the first tooth is spaced apart from the second tooth. The area between the first tooth and the second tooth is at least partially filled with porous material such that generation of noise in the trailing edge section of the rotor blade is reduced. Furthermore, the embodiments relate to a wind turbine including at least one such a rotor blade.

The present invention relates to a covering for rotor blades comprising a fabric and a protective top layer, the covering having a weight of up to 800 g/m.sup.2, the covering having an elongation at break in both a warp and a weft direction of at least 20%, wherein the elongation at break is determined according to ISO 13934-1:2013, wherein the protective top layer is a film, and wherein the protective top layer is laminated to the fabric. The invention also relates to a use of the covering for covering rotor blades of a wind turbine.