ROTOR BLADE FOR A WIND TURBINE

摘要

The invention concerns a rotor blade for a wind turbine comprising a leading edge and a trailing edge. At least a part of the trailing edge - in the lengthwise direction of the rotor blade - comprises at least one pre manufactured trailing edge part, where said pre manufactured trailing edge part is arranged to cover at least one lengthwise joint of at least one airfoil surface to one other structural part on the rotor blade, where the pre manufactured trailing edge part has a width of 0 to a certain percentage according to a specific rotor radius of the length of the chord of the rotor blade. The pre manufactured trailing edge is preferably made of a fibre composite material or from another suitable material in parts with a length suitable for handling and installing along a rotor blade. The above mentioned structural part can for instance be a full length or part length web, providing stiffness to the construction at the outer area near the trailing edge, by connecting two aerodynamic shell parts. The pre manufactured trailing edge part can then be fixed to a blunt and somewhat roughly shaped rear edge, and thereby act as a cover as well as a well-defined edge of the rotor blade and that the rotor blade has a thickness at the rear edge of said body of 0 to 10 %, preferably of 0 to 5 %, and even more preferred has a thickness of 3 % of the height of the body, where said rear edge has a thickness of at least 2 millimetres, said height is also known as the height of the specific airfoil profile.