Design of a 3.5 meters rotor two bladed Horizontal Axis Wind Turbine

In this work we reviewed some aerodinamical concepts of Horizontal Axis Wind Turbines. We focused in power extraction and how it is related with the blade geometry. We designed a 3.5 meters two bladed rotor which maximizes the power coefficient when it is operating at variable speed. Once we got the blade geometric parameters we analyzed the performance of the rotor to know its behavior at different tip speed ratios. The airfoil used in the rotor blades is the NACA5317.