US Patent 8241000 Wind turbine rotor blade and airfoil section

The present invention includes a set of airfoils, U rails and V rails taken together to describe a blade for use with a horizontal axis wind turbine. The blade's design includes a maximum thickness higher than conventional blades employed for the same use thereby providing better load bearing structural characteristics while at the same time maintaining the requisite aerodynamic qualities for similar blades. The blade has a Reynolds number in the range of about 1.1 to 1.3×106 and a maximum lift coefficient of about 1.3.