Low-noise wind driven generator blade

In order to solve the problem that an existing wind driven generator blade cannot give consideration to aerodynamic efficiency improvement and noise pollution, the utility model provides a low-noise wind driven generator blade which comprises a blade body and a flap, and the flap is arranged on the tail edge of the blade body in the mode that the attack angle can be adjusted. The flaps are made of acoustic metamaterials with sound absorption and noise reduction functions. According to the low-noise wind driven generator blade, the aerodynamic efficiency of a low-wind-speed type wind driven generator can be improved, and the generated power of the wind driven generator is improved; and meanwhile, the radiation level of aerodynamic noise during operation of the wind driven generator is reduced, the noise influence of operation power generation of the wind driven generator on the environment is reduced, and the wind power income under the low-wind-speed condition is improved. 为克服现有风力发电机叶片存在无法兼顾气动效率提升和噪声污染的问题，本实用