A wind turbine rotor blade is disclosed that includes a blade body having a shape that generates a lift when impacted by an incident airflow. The blade body includes a pressure side and a suction side joining at a leading edge and a trailing edge, and a chord extension system mechanically coupled with the trailing edge. The chord extension system may be configured to enhance an aerodynamic performance of the wind turbine rotor blade. The chord extension system may include either a flat plate or a serration. The chord extension system may include a multi-layer composite body that includes a first composite layer having a first elasticity parameter and a second composite layer mechanically coupled with the first composite layer. The second composite layer may have a second elasticity parameter different from the first elasticity parameter.

A method of manufacturing a wind turbine rotor blade. The method includes providing a blade body having a shape that generates a lift when impacted by an incident airflow, and longitudinally extending the blade body from a root region to a tip region, through a transition region extending between and joining the root and the tip region. The root region may begin from a proximal end of the blade body, extending up to a predetermined first length of the blade body. The tip region may begin from a distal end of the blade body, extending up to a predetermined second length of the blade body. The blade body may include a predetermined structure that is fail-safe under a predetermined operating condition. The method may include providing flow enhancing components configured to enhance aerodynamic flow characteristics of the blade body, and physically coupling the flow enhancing components with the blade body.

A wind turbine component adapted to be attached to a wind turbine, wherein the component is a cover element adapted to cover at least one part of a wind turbine or an aerodynamic element adapted to be attached to a rotor blade of a wind turbine, wherein the component includes a main body with a continuous and at least partly curved surface, wherein the main body is formed by a layer stack including a plurality of layers, wherein at least two of the layers are of a different material.

A vortex generator tape for installation on an outer surface of a wind turbine blade, the vortex generator comprising an elongate base part comprising an inner side configured for being adhered to the outer surface of the wind turbine blade, and an outer side arranged opposite to the inner side; and a plurality of protrusions each for generating vortices during the operation of the wind turbine blade, wherein each protrusion protrudes from the outer side of the base part and is spaced apart from every other protrusion along the base part; wherein the plurality of protrusions is formed integrally with the base part.

A method of operating a wind turbine for controlling wake wherein the wind turbine includes at least a rotor blade and a plurality of aerodynamic devices for influencing the airflow flowing on the rotor blade, the aerodynamic device being movable between at least a respective first configuration and a second respective configuration, the method including the step of moving the aerodynamic device between the first configuration and the second configuration for influencing a wake generated by the wind turbine.

The invention describes a wind turbine rotor blade active flap (1) comprising a primary body (1P) adapted for mounting to the trailing edge (20.sub.TE) of a wind turbine rotor blade (20); a flap turning means (10, 11, 12) adapted to turn the active flap (1) between a neutral position (R.sub.0), in which the active flap (1) directs airflow (A.sub.20S, A.sub.20P) towards the suction side (P.sub.20S) of the rotor blade (20), and a working position (R-R.sub.max), in which the active flap (1) directs airflow (A.sub.20S, A.sub.20P) towards the pressure side (P.sub.20P) of the rotor blade (20); and a secondary body (1S) mounted to the primary body (1P) and configured to hold the active flap (1) in its neutral position (R.sub.0). The invention further describes a wind turbine (2) comprising a number of rotor blades (20) mounted to a hub; and an active flap (1) according to the invention, mounted to the trailing edge (20.sub.TE) of each rotor blade (20).