An passive control system with the composite material is proposed to achieve the control of the pitch angle of the rotor blade for Horizontal-Axis-Wind-Turbine (HAWT). Through the wind tunnel test with real scale model, we confirm the aerodynamic properties of the turbine blade and predict the electric power generation of our passive control system. We also estimate the influence of fatigue and temperature of elastic composite materials in the electric power generation. As a result of the present study, the effectiveness of this system was confirmed. Even if the elastic material fatigues due to the periodic external forces, the performance of electric power generation of the turbine with present system is maintained by adjusting the initial pitching angle at the root of the blade.
