A method for manufacturing an outer skin of a rotor blade includes forming an outer skin layer of the outer skin from a first combination of at least one of one or more resins or fiber materials. The method also includes forming an inner skin layer of the outer skin from a second combination of at least one of one or more resins or fiber materials. More specifically, the first and second combinations are different. Further, the method includes arranging the outer and inner skin layers together in a stacked configuration. In addition, the method includes joining the outer and inner skin layers together to form the outer skin.

The invention relates to a cooling panel assembly (2) for a wind turbine tower (1). It is arranged to be mounted on such a tower (1) on a section thereof as seen in the circumferential direction. The cooling panel assembly (2) includes at least one cooling panel (2a,2b). According to the invention, the cooling panel assembly (2) includes deflector means (6) mounted at the top of the at least one cooling panel (2a, 2b) such that the deflector means (6) shields the cooling panel assembly (2) from above. The deflector means (6) has substantially the same circumferential extension or more as the other parts of the cooling panel assembly (2). The invention also relates to a wind turbine tower (1) provided with at least one such cooling panel assembly (2).

A scroll pump tip seal to be fitted to a tip face of a scroll wall of a first scroll of a scroll pump to seal between said tip face and a base plate of a second scroll of the scroll pump. The tip seal is made of metal and has at least one internally disposed void. The metal tip seal may be made of a foamed metal defining a plurality of internally disposed voids.

A compressor wheel that can be employed in devices such as turbochargers. The compressor wheel includes an axially extending hub having an inlet end, a shaft bore extending from the inlet end and an arcuate outer surface opposed to the shaft bore. The axially extending hub is composed of a metal and has a porous region located proximate to the arcuate outer surface of the axially extending hub. The compressor wheel also includes a blade array disposed on the arcuate outer surface of the axially extending hub. The blade array has an outer surface and an inner region. The blade array comprises a plurality of circumferentially-spaced, radially and axially extending blades disposed thereon and is composed, at least in part of a polymeric material. Polymeric material located in the inner region of the blade array extends into the porous region defined in the axially extending hub.

A lightning current transfer arrangement for a wind turbine enables lightning current and electrostatic discharge current to be discharged between first and second parts of the wind turbine that are rotatable relative to each other. The lightning current transfer arrangement comprises a current transfer unit electrically coupled to the first part, and an electrically conductive slideway electrically coupled to the second part and rotatable relative to the current transfer unit. The current transfer unit comprises a slider elastically biased towards the slideway, where the slider comprises a slide piece formed of a conductive plastic material, and a metal electrode rigidly coupled with the slide piece.

The present disclosure is directed to a rotor blade assembly for a wind turbine having a first rotor blade segment with a first spar cap segment and a second rotor blade segment with a second spar cap segment. The first and second spar cap segments are arranged together at an interface and are constructed of a composite material. Further, the rotor blade assembly includes a joint assembly at the interface of the first and second spar cap segments. The joint assembly is constructed of a first metal joint secured to the first spar cap segment and a second metal joint secured to second spar cap segment. Moreover, the first and second metal joints are welded together at a weld area.

The present invention concerns a connecting element for connecting a blade, or airfoil profile, to the hub of an industrial axial fan, a blade system comprising said connecting element, and an industrial axial fan comprising such blade system. The connecting element (1) for connecting a blade (10) to the hub (20) of an industrial axial fan according to the present invention, is realized in a single L-shaped piece comprising a first part (1a) having a substantially straight develop and a second part (1b) having a substantially straight develop, said first (1a) and second (1b) part being connected by a linking part (1c) presenting a curvature radius, said first (1a) and second (1b) parts lying on substantially perpendicular planes. The connecting element according to the present invention allows to achieve several advantages with respect to the prior art, one of said advantages consisting of its extremely simple shape and manufacturing process, which render the connecting element economically advantageous.

The invention relates to a cooling panel assembly (2) for a wind turbine tower (1). It is arranged to be mounted on such a tower (1) on a section thereof as seen in the circumferential direction. The cooling panel assembly (2) includes at least one cooling panel (2a,2b). According to the invention, the cooling panel assembly (2) includes deflector means (6) mounted at the top of the at least one cooling panel (2a, 2b) such that the deflector means (6) shields the cooling panel assembly (2) from above. The deflector means (6) has substantially the same circumferential extension or more as the other parts of the cooling panel assembly (2). The invention also relates to a wind turbine tower (1) provided with at least one such cooling panel assembly (2).

The application relates to wind turbine tower section production methods and in particular to methods of manufacturing a plurality of elongate tower segments for forming a wind turbine tower section, the tower section constructed from a plurality of elongate tower segments connected along their respective longitudinal edges. The tower section is formed from a plurality of cans connected end to end and is divided into elongate segments by cutting along two or more cut lines extending along the length of the tower. A method of providing a horizontal flange at the end of a wind turbine tower is also discussed, as is a vertical flange preassembly including a pair of vertical flanges for connecting the longitudinal edges of adjacent first and second tower segments.

The wind harnessing device includes an axle, a number of radially outward extending first and second poles respectively arranged at equal intervals around a first end and a second end of the axle, a number of blade assemblies, and a rack to which the axle is rotatably mounted. Each first pole is aligned with and parallel to a second pole. Each blade assembly includes a first beam, a second beam, and a flat blade. The first and second beams are respectively attached to and along a first edge and an opposite second edge of the blade. The first beam's two ends are pin joined to the outer ends of a pair of corresponding first and second poles so that the blade is able to swing about the first beam. The wind harnessing device thus structured is of lower weight, reduced cost, and easy maintenance.