Bowed low-noise propeller blade design method

The invention discloses a bowed low-noise propeller blade design method. A straight line is used as each section airfoil inserting reference; however, the intersected points of the straight line and design planes in a spanwise direction are coincided with rear edge points of airfoils in the plane. The bowed low-noise propeller blade design method comprises the steps of first, drawing a straight line, fixing an original point, placing design planes in positions, having different relative radius distances from the original point, in a propeller blade rotating direction, and determining the intersected points of the design planes and the straight line, wherein the design planes are perpendicular to the straight line; and then inserting corresponding airfoils into the different design planes, guaranteeing that upper and lower points of the rear edge of the airfoils are coincided with the intersected points of the design planes and the straight line, and drawing airfoil torsion angles, wherein the design planes of