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. https://www.mabelandfoxs.shop/product-category/sound-book/