【摘要】 提出了一种用于微型飞行器螺旋桨的气动优化设计方法。该方法分为两部分 :基于有限片桨叶涡流理论的气动性能计算和采用遗传优化算法的优化设计。在优化过程中 ,用贝塞尔样条描述桨叶的宽度和安装角沿半径的分布 ,考虑了桨叶不同剖面处雷诺数的变化 ,以螺旋桨的推进效率作为目标函数得到了桨叶沿半径的宽度、安装角的最佳分布。设计结果表明 ,该方法能够得到工程上实用的设计结果。最后 ,根据该方法制作了用于螺旋桨气动设计和性能计算的软件 ,该软件能方便数据输入 ,直观显示设计结果。更多还原

【Abstract】 An aerodynamic optimization design method for micro air vehicle (MAV) propeller is presented. The method consists of two parts: aerodynamic performance calculation based finite blade vortex theory and aerodynamic optimization design based genetic algorithms. Using Bézier splines to express blade shape and considering Re variety in different blade sections, the optimum propeller blade shape such as chord and angle of twist distribution has been obtained by maximizing the propulsive efficiency under the constraint of constant power consumption. Experimental results show that the method can exactly predict propeller performance. A practical MAV propeller with high performance is obtained. Finally a software with graphic user interface based the method is developed. The software can ensure the data input easy and visually show the design result.更多还原