ASSEMBLY OF AEROFOIL-SHAPED BODY AND NOISE REDUCING SERRATION AND WIND TURBINE PROVIDED THEREWITH

摘要

An assembly is provided of, firstly, an aerofoil-shaped body, such as a wing of an airplane or a rotor blade of a wind turbine, having a trailing edge and, secondly, a noise reducing serration extending along at least part of said trailing edge. The serration comprises a base plate defining a first edge connected to the aerofoil-shaped body near to said trailing edge and a second edge having attached thereto a number of teeth defining tips facing away from the base plate. The base plate is located behind the trailing edge and is separated therefrom by a gap wherein the connection between the base plate and aerofoil-shaped body is defined by at least one tape-like member made of a material which allows the tape-like member to bend, stretch and buckle. The serration in such a manner is stiff against bending but weak against torsion that in a range of expected operational loads the serration is not able to bend substantially, whereas in said range of expected operational loads the base plate is able to twist.