Abstract: A method of joining first and second blade components of a rotor blade of a wind turbine includes providing corresponding first and second positioning elements at an interface of the first and second blade components. The method also includes aligning and securing the first positioning element of the first blade component with the second positioning element of the second blade component so as to temporarily secure the first and second blade components together. Further, the corresponding first and second positioning elements maintain a desired spacing between the first and second blade components. Moreover, the method includes permanently securing the first and second blade components together such that the desired spacing is maintained between the first and second blade components.

Abstract: This invention relates to a method and a wind turbine blade, wherein one or more airflow modifying devices are attached to a wind turbine blade having a base aerodynamic profile. The base aerodynamic profile is configured to substantially carry the structural loading of this modified wind turbine blade. The airflow modifying device is manufactured via 3D-printing and/or via 3D-machining and optionally coated or laminated before attachment. Once attached, the airflow modifying device may further be coated or laminated before working the outer surfaces into their finished shape.

Abstract: A wind turbine blade includes a profiled contour with a leading edge and a trailing edge, and a chord extending between the leading edge and the trailing edge, along with a blade shell with a pressure side and a suction side, a first main spar cap integrated in the pressure side of the blade shell, a second main spar cap integrated in the suction side of the blade shell, and one or more shear webs connected between the first main spar cap and the second main spar cap. The blade shell includes at least a first load carrying structure arranged at the leading edge or the trailing edge and having a first extension, including a first primary extension on a first side of the chord, where the first primary extension is at least 60% of the first extension.

Abstract: An optical analysis device for determining particulate matter includes three light sources having different wavelengths, an apparatus for combining the three transmitted light beams on a common optical path, a measurement volume, an optical axis in the forward scattering direction that defines the scattering angle 0°, a light absorption apparatus at 0° that absorbs unscattered light, and six detectors arranged at different specified angles which are as close as possible to 0° directly next to the light absorption apparatus, at a second scattering angle between 7° and 40°, at a third scattering angle between 41° and 70°, at a fourth scattering angle between 71° and 115°, at a fifth scattering angle between 116° and 145°, at a sixth scattering angle between 146° and 180°. A control and evaluation unit controls the light sources such that the scattered light is detected in a wavelength selective manner by the detectors.

Abstract: This invention relates to a noise reducing device, a wind turbine blade comprises such a noise reducing device, a method of retrofitted a noise reducing device, and a method of manufacturing such a noise reducing device. The noise reducing device comprises first noise reducing elements projecting from a base part having a third surface towards a second end. Second noise reducing elements are attached to the third surface and projects along the first noise reducing elements towards the second end. The first noise reducing elements are preferably serrations while the second noise reducing elements are bristles. The bristles projects at least into the gaps formed between adjacent serrations.

Abstract: This invention relates to a noise reducing device and a wind turbine blade comprises such a noise reducing device. The noise reducing device comprises noise reducing elements projecting from a base part towards a second end. Airflow modifying elements projects further from the base part towards a first end. The noise reducing elements and airflow modifying elements are arranged on opposite sides of the base part and preferably have different dimensions and/or shapes.

Abstract: This invention relates to a sleeve and a modular wind turbine blade comprising such a sleeve. The modular wind turbine blade comprises a first blade and a second blade section, wherein the two blade sections are joined together to form a joint interface having a number of adjoining end lines located in the outer surfaces. A sleeve is positioned over the joint interface and connected to both the first and second blade sections. The body of the sleeve extends over the adjoining end lines and protects them from environmental and external impacts. The sleeve further comprises a number of airflow modifying elements projecting from the outer surface of the sleeve. The airflow modifying elements may be stall fences.

Abstract: The present invention relates to a method and to a mould system (70) for manufacturing a shear web for a wind turbine blade as well as to a backing plate (66) for such method and mould system. The method involves arranging one or more fibre layers on top of a web mould part (61), arranging backing plates (66) at each end to create a mould cavity between the first and second backing plate (66, 68) and the web mould part (61). Each backing plate (66, 68) comprises an inner moulding surface (80), outer surfaces (98, 100) and a channel (82) or groove (83) extending between at least one of the outer surfaces (98, 100) and the inner moulding surface (80). Resin is supplied to the mould cavity via each channel or groove of the first and second backing plate (66, 68), and subsequently the resin is cured or hardened to form the shear web.

Abstract: A method of assembling a wind turbine blade from wind turbine blade elements is provided. The method comprises joining the elements via a taper joint around the whole circumference of the blade.

Abstract: The invention relates to a method for establishing a sectional or modular wind turbine blade. The method comprises the steps of transporting at least two blade sections of said wind turbine blade and a mobile factory for joining blade sections to a location at or in proximity of a wind turbine site, positioning said blade sections with two blade section ends facing each other and supported on a platform in said mobile factory, moving said platform in relation to the ground at the location for levelling said platform, aligning said blade section ends in relation to each other, and establishing said sectional or modular wind turbine blade by joining blade sections in an area of connection at said blade section ends. The invention also relates to a system for establishing a sectional or modular wind turbine blade and a mobile factory for joining sections of a wind turbine blade.

Abstract: The present invention relates to a method of manufacturing a plurality of wind turbine blades. The method includes providing first, second and third stationary moulds, moulding respective first upper and lower shell halves, removing and turning the first upper shell half, and positioning and bonding it on the first lower shell half to form a closed wind turbine blade shell. This is repeated for continuously manufacturing a plurality of wind turbine blades.

Abstract: Methods for performing maintenance on a rotor blade of a wind turbine rotor comprising at least a first rotor blade with an airfoil body formed from a blade shell element, the airfoil body having a suction-side surface and a pressure-side surface, a leading edge and a trailing edge, and a root end for mounting to a wind turbine hub and a distal tip end are disclosed, as well as a related system for same. The method comprising the steps of bringing the wind turbine rotor to a standstill, introducing a mobile maintenance device into said first rotor blade at the blade root, moving said mobile maintenance device inside said first rotor blade to a location, performing a maintenance operation at the location with said mobile maintenance device, and removing said mobile maintenance device from said first rotor blade.

Abstract: This invention relates to a method of manufacturing a bulkhead unit, a method of installing a bulkhead unit, a bulkhead, a bulkhead unit and a wind turbine blade. The bulkhead is manufactured by vacuum forming or rotational moulding and has a set of predetermined openings formed during manufacturing. Various additional elements are pre-mounted or pre-integrated into the bulkhead before installation of the bulkhead unit. This pre-assembled unit can then be positioned inside the blade root section and connected to the blade section.

Abstract: The subject matter is directed to a method of mounting flow-altering devices on wind turbine blades, the mounting device and the flow-altering device. The flow-altering devices having a base with an inner side for attaching to a blade, and an outer side with flow-altering device parts protruding from the base. The method provides for a mounting device with a mounting panel supporting one or more flow-altering devices; arranging the mounting panel on an area of application on the surface of the blade with an adhesive material between the inner side of the device and the surface of the blade, and with a seal between the mounting panel and the surface to form a cavity between the mounting panel and the surface of the blade; applying a negative pressure in the cavity; releasing the negative pressure; and removing the mounting panel.

Abstract: The present invention relates to a method of manufacturing a wind turbine rotor blade, to a wind turbine rotor blade obtainable by said method, to a pultrusion process for producing an elongated preform (97) for embedment in a wind turbine rotor blade and to an elongated preform (97) obtainable by said process. The blade manufacturing process involves a pultrusion process to obtain the preform (97), embedding the preform (97) within one or more parts of the blade, infusing a resin into said one or more blade parts containing the preform (97), and assembling the rotor blade including said one or more blade parts.

Abstract: The disclosure presents a wind turbine blade and a method of manufacturing a wind turbine blade, wherein the wind turbine blade is manufactured as a composite structure comprising a reinforcement material embedded in a polymer matrix, the method comprising: providing a first blade mould with a first blade shell part having a leading edge, a trailing edge, and a first leading edge glue surface at the leading edge, the first blade mould comprising a first leading edge flange; providing a second blade mould with a second blade shell part having a leading edge, a trailing edge, and a second leading edge glue surface at the leading edge, the second blade mould comprising a second leading edge flange; applying glue to a leading edge glue surface; providing one or more leading edge spacer elements at a leading edge flange; arranging the second blade mould on the first blade mould, such that the one or more leading edge spacer elements are arranged between the first leading edge flange and the second leading edge fla

Abstract: The present invention relates to a method of manufacturing a wind turbine blade. The method comprises adhesively joining a suction side shell half (69) and a pressure side shell half (68) along respective bond lines (80) at their leading and trailing edges, wherein, prior to joining, an impregnated carrier substrate (76) is arranged in between the shell halves along at least part of said bond lines (80). The carrier substrate (76) is impregnated with at least one compound having a functional moiety. The shell halves may be manufactured by placing a fibre lay-up including one or more fibre layers on a mould surface (66), arranging the impregnated carrier substrate (76) on the inside surface (72) at least along part of its peripheral edge (74) and injecting or infusing the fibre lay-up and the impregnated carrier substrate with a resin and subsequently curing the same.

Abstract: The present disclosure relates to a method for detecting a fibre misalignment in an elongated structure, such as a wind turbine blade component. The elongated structure has a length along a longitudinal direction and comprises a plurality of stacked reinforcing fibre layers. The plurality of fibre layers comprises fibres having an orientation aligned, unidirectionally, substantially in the longitudinal direction. The method comprises scanning a surface of the elongated structure for identifying one or more surface irregularities, selecting one or more regions of interest comprising said one or more surface irregularities, examining said region of interest using penetrating radiation, and determining a position and/or size of the fibre misalignment based on said examining step.

Abstract: The present invention relates to a wind turbine blade (10) comprising two or more serrations (100a, 100b, 100c) provided along a section (S) of the trailing edge (20). The section (S) extends spanwise from the tip end (14) towards the root end (16) for up to 5% of the total blade length (L), The serration (100a) closest to the tip end has a height (H) and/or width (W) greater than the respective height (H) and/or width (W) of at least one other serration (100b, 100c) in said section. The present invention also relates to a wind turbine (2) comprising at least one wind turbine blade (10) of the present invention and to a serrated panel (66).

Abstract: A vortex generator device for a wind turbine blade, and a wind turbine blade is disclosed, the vortex generator device comprising a base with an inner side and an outer side, and a first fin protruding from the outer side and extending along a first fin axis, wherein the vortex generator device is a single-fin vortex generator device, and the base has a first edge part and a second edge part, the first edge part and the second edge part forming a primary angle in the range from 5 degrees to 60 degrees.