Novel high-robustness high-lift-drag-ratio laminar flow airfoil profile of wind turbine

The invention provides a novel high-robustness and high-lift-drag-ratio laminar flow airfoil of a wind turbine. The airfoil is composed of a front edge, a rear edge, an upper arc line and a lower arc line, wherein the upper arc line and the lower arc line are located between the front edge and the rear edge. The ratio of the radius r of the front edge of the airfoil to the chord length c of the airfoil is r/c = 0.942%, the ratio of the maximum thickness a to the chord length c of the airfoil is a/c = 20.25%, the position of the maximum thickness is located at the position where x/c = 30.62%, the ratio of the maximum camber b to the chord length c of the airfoil is b/c = 2.15%, the position of the maximum camber is located at the position where x/c = 70.8%, and the ratio of the thickness w of the rear edge to the chord length c of the airfoil is w/c = 0.26%; x is the distance from the leading edge to the trailing edge in the chord line direction of the airfoil, and the values of r/c, a/c, b/c, x/c and w/c can