Cross-day and cross-night flight solar unmanned aerial vehicle overall parameter design method

The invention belongs to the technical field of aviation aircraft design, and discloses a cross-day and cross-night flight solar unmanned aerial vehicle overall parameter design method. The method comprises the steps of weight model establishment, aerodynamic calculation model establishment, wing aspect ratio optimization, variable wing area task load array calculation, wing area calculation basedon a task load target value and overall parameter calculation, and specifically comprises the following steps: firstly, establishing a weight model and an aerodynamic calculation model; optimizing the wing aspect ratio according to the established models to obtain an optimization result, calculating a task load array based on the optimization result, calculating the wing area, and finally calculating other overall parameters. According to the method, the overall parameters of the unmanned aerial vehicle such as the wing aspect ratio, the wing area, the wing load, the thrust-weight ratio, theflight speed, the flight h