Abstract: Air cooling device for the air cooling of a generator of a wind power installation by means of wind, comprising a cooling unit of the generator with a cooling unit outer surface, the wind flowing onto said cooling unit outer surface for the air cooling of the generator during the operation of the wind power installation, wherein an air deflector is arranged on the cooling unit outer surface of the cooling unit and has a first air deflection unit which extends outwardly at an acute angle starting from the cooling unit outer surface and forms with the cooling unit a converging first air deflection channel, which is configured in an operating state of the wind power installation to deflect the wind for the air cooling in the direction of the cooling unit.

Abstract: A method of optimizing a rotor blade of a wind turbine as well as to an associated rotor blade, and to a wind turbine, wherein the rotor blade extends from a rotor-blade coupling to a rotor-blade tip in a rotor-blade longitudinal direction with a rotor-blade length, having an aerodynamical profile extending between a leading edge and a trailing edge, wherein the method comprises the following steps: designing the rotor blade for design environmental conditions including at least one design air density, with the designing comprising providing a sound-protection means within a blade external region of the rotor blade, the latter being defined as the 50% of the rotor-blade length abutting the rotor-blade tip; providing an air density at the installation site of the wind turbine; comparing the air density with the design air density; and increasing the induction factor by upsizing the sound-protection means in case the air density is lower than the design air density.

Abstract: A rotor blade for a wind power installation, which extends in a longitudinal direction with a profile course from a blade connector to a blade tip, wherein the profile course contains at least one profile, comprising: a suction side and a pressure side, a relative profile thickness of greater than 25%, a profile chord, which extends between a leading edge and a trailing edge of the profile and has a length which defines the profile depth, a mean line which extends at least partially below the profile chord, a convex region which extends on the suction side from the trailing edge, and a convex region which extends on the pressure side from the trailing edge, wherein the convex region on the pressure side defines a rounded transition region of the pressure side to the trailing edge.

Abstract: A wind turbine rotor blade, with a length, a rotor blade root, a rotor blade tip, a pressure side, a suction side, a leading edge, a trailing edge, and an air guide for heated air to guide heated air inside of the rotor blade and along a longitudinal direction of the rotor blade from the rotor blade root in the direction of the rotor blade tip. The wind turbine rotor blade additionally comprises at least one aerodynamic mixer in the area of the air guide. The invention further relates to a wind turbine with at least one wind turbine rotor blade.

Abstract: Method for de-icing at least one rotor blade of a rotor of a wind power installation, wherein the rotor is able to be operated at a variable rotating speed and the wind power installation generates an output from wind, said method comprising the following steps: checking for an icing situation on the at least one rotor blade, and changing from a normal operation of the wind power installation without de-icing to a de-icing operation if an icing situation has been identified; wherein in the de-icing operation the at least one rotor blade is heated for de-icing, and the rotating speed and/or the generated output are/is reduced as a function of at least one environmental condition of the wind power installation; wherein the at least one environmental condition is selected from the list including an external temperature of the wind power installation and a wind speed in the region of the wind power installation.

Abstract: A rotor blade of a wind turbine, to an associated wind turbine and to an associated method. A rotor blade for a wind turbine, which extends in the longitudinal direction with a profile course from a blade connector to a blade tip, wherein the profile course comprises a course of a lift coefficient, comprising a hub portion adjacent to the blade connector and a tip portion adjacent to the blade tip, a middle portion adjacent to the hub portion and to the tip portion, wherein the middle portion substantially comprises those profile sections which have a relative profile thickness, which is defined as the ratio of maximum profile thickness to profile depth, of between 20% and 30%, and wherein the middle portion comprises a local minimum of the course of the lift coefficient.

Abstract: Provided is a wind turbine rotor blade with a length, a rotor blade root, a rotor blade tip, a pressure side, a suction side, a leading edge, a trailing edge, a rotor blade depth, a rotor blade thickness and an air guide for heated air for guiding heated air along a longitudinal direction of the rotor blade from the rotor blade root in the direction of the rotor blade tip. The wind turbine rotor blade further has a deflection section, which is arranged in the area of the rotor blade tip and has a cross sectional surface that at least sectionally is at least constant toward the rotor blade tip or that at least sectionally enlarges toward the rotor blade tip.

Abstract: A rotor blade of a wind turbine, having a rotor blade length, a rotor blade depth extending over the rotor blade length, a rotor blade thickness extending over the rotor blade length, and a thickness of a trailing edge of the rotor blade extending over the rotor blade length, wherein, in a region of the rotor blade length, the rotor blade simultaneously has a splitter plate that has a predetermined length and a Gurney flap that has a predetermined height, wherein a ratio of the predetermined height of the Gurney flap to the predetermined length of the splitter plate at a particular position in the direction of the rotor blade length is selected in such a manner that a threshold value that decreases with a relative profile thickness, which is defined as a ratio of the rotor blade thickness to the rotor blade depth, is not reached.

Abstract: The present disclosure relates to a rotor blade of a wind power installation, at least comprising a first rotor blade component having: a first end for arranging on the wind power installation, and a second end for connecting to a second rotor blade component; a second rotor blade component having: a first end for arranging on the first rotor blade component, and a second end wherein the first rotor blade component can be connected to the second rotor blade component at a separating point to the rotor blade, wherein the rotor blade has an aerodynamically open profile at the separating point.

Abstract: A rotor blade of a wind turbine, to an associated wind turbine, to an associated wind farm and to associated methods. The rotor blade has a leading edge and a trailing edge and extends in a longitudinal direction of the rotor blade between a root end and a tip end, wherein a direct connection between the leading edge and the trailing edge is referred to as a chord line, wherein the rotor blade has serrations in the region of the trailing edge at least in some section or sections, wherein each of the serrations has a base line, which is arranged at the trailing edge, and an end point, which is furthest away from the base line, which together span a plane of the serration, wherein an angle between the plane of at least one of the serrations and the profile chord of the rotor blade is formed as a function of at least one environmental parameter at the installation location of the wind turbine.

Abstract: A rotor blade of a wind turbine, wherein the rotor blade has in particular a splitter plate, which is arranged on the blunt trailing edge of the rotor blade. The splitter plate comprises: a root edge, wherein the root edge is arranged on, in particular along, the trailing edge below a transition from the suction side into the trailing edge, an end edge, wherein the end edge forms a free edge, and a surface between the root edge and the end edge, wherein the surface has at least one curved part between the root edge and the end edge, and at least one part of the surface lies in the shear layer generated by the suction side. A rotor blade of a wind turbine, wherein the rotor blade has in particular a splitter plate, which is arranged on the blunt trailing edge of the rotor blade.

Abstract: A method is provided for reducing the noise emission of a wind turbine rotor blade. The rotor blade has a leading edge, a trailing edge, a suction side, a pressure side and an attachment part at least partially on the pressure side. A pressure-side transition is present between the pressure side and the attachment part. The pressure-side transition is leveled by applying a leveling compound.

Abstract: A rotor blade for a rotor, in particular of a wind power installation, having a rotor-blade length constituted between a root region and a rotor-blade tip, a rotor-blade depth constituted between a leading edge and a blunt trailing edge, a rotor-blade thickness constituted between a pressure side and a suction side, a suction-side trailing-edge region extending on the suction side and/or a pressure-side trailing-edge region extending on the pressure side, the suction-side trailing-edge region and/or the pressure-side trailing-edge region extending from the blunt trailing edge in the direction of the leading edge with an extent of less than 30%, in particular less than 20%, of the chord, and the suction-side trailing-edge region and/or the pressure-side trailing-edge region having at least one eddy generator.

Abstract: Provided is a wind turbine rotor blade with a rotor blade shell, which envelops an internal volume, and at least one vortex generator in the internal volume.

Abstract: A rotor blade, with a suction side and a pressure side, for a wind turbine, having a rotor blade root of a hub region for attaching the rotor blade to a rotor hub, a rotor blade tip, which is arranged on a side, facing away from the rotor blade root, of a tip region, at least one vortex generator, which is arranged between the rotor blade root and the rotor blade tip, wherein the at least one vortex generator comprises swirl elements with a length and a height, which are arranged one next to the other in a longitudinal direction of the rotor blade and are in each case oriented at an angle to a main flow direction of the rotor blade, wherein, in the longitudinal direction of the rotor blade, the swirl elements have a lateral spacing to one another. A variation in the geometry of the swirl elements is realized in a manner dependent on a respective distance between the arrangement of the swirl elements and the rotor blade root.

Abstract: Air cooling device for the air cooling of a generator of a wind power installation by means of wind, comprising a cooling unit of the generator with a cooling unit outer surface, the wind flowing onto said cooling unit outer surface for the air cooling of the generator during the operation of the wind power installation, wherein an air deflector is arranged on the cooling unit outer surface of the cooling unit and has a first air deflection unit which extends outwardly at an acute angle starting from the cooling unit outer surface and forms with the cooling unit a converging first air deflection channel, which is configured in an operating state of the wind power installation to deflect the wind for the air cooling in the direction of the cooling unit.

Abstract: A rotor blade of a wind turbine, to an associated wind turbine and to an associated method. A rotor blade for a wind turbine which extends in the longitudinal direction with a profile course from a blade connector to a blade tip, wherein the profile course comprises a course of a lift coefficient, comprising a hub portion adjacent to the blade connector and a tip portion adjacent to the blade tip, a middle portion adjacent to the hub portion and to the tip portion, wherein the middle portion substantially comprises those profile sections which have a relative profile thickness, which is defined as the ratio of maximum profile thickness to profile depth, of between 20% and 30%, and wherein the middle portion comprises a local minimum of the course of the lift coefficient.

Abstract: A rotor blade of a wind turbine, having a rotor blade length, a rotor blade depth extending over the rotor blade length, a rotor blade thickness extending over the rotor blade length, and a thickness of a trailing edge of the rotor blade extending over the rotor blade length, wherein, in a region of the rotor blade length, the rotor blade simultaneously has a splitter plate that has a predetermined length and a Gurney flap that has a predetermined height, wherein a ratio of the predetermined height of the Gurney flap to the predetermined length of the splitter plate at a particular position in the direction of the rotor blade length is selected in such a manner that a threshold value that decreases with a relative profile thickness, which is defined as a ratio of the rotor blade thickness to the rotor blade depth, is not reached.

Abstract: A rotor blade of a wind turbine that has a Gurney flap, to an associated wind turbine, and to an associated method. A rotor blade for a wind turbine, having a rotor blade length, having a rotor blade depth which extends over the rotor blade length, having a rotor blade thickness which extends over the rotor blade length, and having a thickness of a trailing edge of the rotor blade, which thickness extends over the rotor blade length, said rotor blade comprising a Gurney flap, which has a height which extends over the rotor blade length, wherein the height of the Gurney flap is dimensioned according to the thickness of the trailing edge in such a way that a ratio of the height of the Gurney flap and the thickness of the trailing edge is between greater than 0% and 25%, in particular between 5% and 25%.

Abstract: A rotor for a wind turbine, in particular a wind turbine, having a power of more than 1 MW, to a hub for a rotor of a wind turbine and to a wind turbine. A rotor for a wind turbine, in particular a wind turbine having a power of more than 1 MW, comprising a primary rotor blade, wherein the primary rotor blade extends from a first root region to a first blade tip having a first longitudinal extension, a secondary rotor blade, wherein the secondary rotor blade extends from a second root region to a second blade tip having a second longitudinal extension, the first longitudinal extension being larger than the second longitudinal extension.