| 摘要 |
A wind turbine blade is described having noise reduction features. The blade has a plurality of projecting serrations provided at the blade trailing edge to reduce the scattering noise produced during operation of the blade wherein the serrations have a plurality of through going apertures defined in the serration body. The apertures act to provide a pressure equalisation effect at the serrations between the suction and pressure sides. This pressure equalisation provides for improved noise reduction performance as well as a reduction in mechanical stresses and strains which may be experienced by the serrations increasing serration lifetime. |
