Multi-working-condition self-adaptive variable pitch propeller design optimization method

The invention discloses a multi-working-condition self-adaptive variable pitch propeller design optimization method, and belongs to the field of aircraft design. The method comprises the steps that firstly, according to task requirements, a positive-camber high-lift airfoil profile is obtained through optimization; then, a reverse design method based on the strip theory is adopted for optimizing and determining the chord length and torsion angle distribution of the propeller, 1/4 chord line control parameters and rotating shaft position parameters of the blades serve as design variables, and aerodynamic force and inertia force borne by the blades are expressed as functions of the design parameters; and finally, constructing an optimal design method for the key parameters of the self-adaptive variable pitch propeller by utilizing a strip theory and a multi-target genetic algorithm. According to the design result, aerodynamic torque is balanced, the propeller can adapt to performance requirements of various wor