Development of Micro Downwind Turbine Generator Having Soft Blades

Development of Micro Downwind Turbine Generator Having Soft Blades

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As there are frequent needs to install a micro wind turbine generator in a residential area, we have developed such a downwind-type turbine rotor having the following specifications: The rotor has the tip diameter of 1.5 m and three two-dimensional NACA0018 blades of 0.15 m chord whose material is light, soft and pliable foam plastic for perfect BIO COENZYMATED METHYLFOLATE safety.

From the wind Vinyl 12" 45 tunnel test under the wind speed less than 14 m/s, it is clarified that the downwind turbine generator having soft blades has the low noise and the self-output-control characteristics, which are regarded as favorable for its actual operation.The latter feature is primarily attributed to bending and torsional elastic-deformation of the soft blade.The remarkable aerodynamic performances are summarized in this paper.