VIDEO: Less noisy blade-design for wind turbines

The speed at the end of the blades on big wind turbines is around 300 km/h. Our French trainee, engineering student Valentin Bobichon, has spent the summer here at Nordic Folkecenter on his project about reducing turbulens, friction and noise at the bladetip. See him test his bladedesign with aircraft-style winglets and hear him explain about the aerodynamics of wind turbine blades.