Abstract: Provided is a method for manufacturing a shell of a wind turbine blade having improved leading edge erosion protection, wherein the method includes the steps of: (a) providing a preform of the shell, (b) providing a protective cover for protection of the shell, (c) arranging the protective cover at a portion of a leading edge of the shell, so that an erosion protected shell is obtained, and (d) casting the erosion protected shell, so that the shell of the wind turbine blade having the improved erosion protection is obtained. Also provided is a method of manufacturing the wind turbine blade and to a shell, a wind turbine blade and a wind turbine.

Abstract: Provided is a system for determining a soiling state of a wind turbine rotor blade. The system includes a pressure sensor adapted to measure a plurality of pressure values corresponding to a plurality of different heights above a trailing edge region of the wind turbine rotor blade, and a processing unit in communication with the pressure sensor and adapted to determine the soiling state of the wind turbine rotor blade by estimating an air flow velocity distribution above the trailing edge region of the wind turbine rotor blade based on the plurality of pressure values. Furthermore, a corresponding method of determining a soiling state of a wind turbine rotor blade is described.

Abstract: A rotor blade for a wind turbine is provided. The rotor blade includes an aerodynamic device for influencing the airflow flowing from the leading-edge section of the rotor blade to the trailing edge section of the rotor blade. The aerodynamic device is mounted at a surface of the rotor blade and includes a pneumatic or hydraulic actuator, such as a hose a cavity, of which the volume depends on the pressure of a fluid being present inside the pneumatic or hydraulic actuator. The rotor blade further includes a control unit for controlling the pressure of the fluid in the hose or the cavity of the aerodynamic device.

Abstract: Provided is a method for manufacturing a shell of a wind turbine blade having improved leading edge erosion protection, wherein the method includes the steps of: (a) providing a preform of the shell, (b) providing a protective cover for protection of the shell, (c) arranging the protective cover at a portion of a leading edge of the shell, so that an erosion protected shell is obtained, and (d) casting the erosion protected shell, so that the shell of the wind turbine blade having the improved erosion protection is obtained. Also provided is a method of manufacturing the wind turbine blade and to a shell, a wind turbine blade and a wind turbine.

Abstract: Provided is a system for determining a soiling state of a wind turbine rotor blade. The system includes a pressure sensor adapted to measure a plurality of pressure values corresponding to a plurality of different heights above a trailing edge region of the wind turbine rotor blade, and a processing unit in communication with the pressure sensor and adapted to determine the soiling state of the wind turbine rotor blade by estimating an air flow velocity distribution above the trailing edge region of the wind turbine rotor blade based on the plurality of pressure values. Furthermore, a corresponding method of determining a soiling state of a wind turbine rotor blade is described.

Abstract: A rotor blade of a wind turbine, wherein the rotor blade includes a lift modifying device, is provided. The lift modifying device is a part of the trailing edge section of the rotor blade. The lift modifying device is configured such that, at a predetermined loading of the trailing edge section, an air channel opens up a flow path from the pressure side to the suction side and vice versa in the trailing edge section. As a consequence, airflow flowing from the leading edge section of the rotor blade to the trailing edge section is at least partly deflected by the open air channel, which results in a modification of the lift of the rotor blade. A method to modify the lift of a rotor blade of a wind turbine is also provided.

Abstract: A rotor blade for a wind turbine is provided. The rotor blade includes an aerodynamic device for influencing the airflow flowing from the leading-edge section of the rotor blade to the trailing edge section of the rotor blade. The aerodynamic device is mounted at a surface of the rotor blade and includes a pneumatic or hydraulic actuator, such as a hose or a cavity, of which the volume depends on the pressure of a fluid being present inside the pneumatic or hydraulic actuator. The rotor blade further includes a control unit for controlling the pressure of the fluid in the hose or the cavity of the aerodynamic device.

Abstract: A rotor blade of a wind turbine, wherein the rotor blade includes a lift modifying device, is provided. The lift modifying device is a part of the trailing edge section of the rotor blade. The lift modifying device is configured such that, at a predetermined loading of the trailing edge section, an air channel opens up a flow path from the pressure side to the suction side and vice versa in the trailing edge section. As a consequence, airflow flowing from the leading edge section of the rotor blade to the trailing edge section is at least partly deflected by the open air channel, which results in a modification of the lift of the rotor blade. A method to modify the lift of a rotor blade of a wind turbine is also provided.