中文摘要：

采用面元法与有限元法相结合的方法，对复合材料螺旋桨桨叶变形与水动力性能之间的关系进行了研究．利用基于速度势的低阶面元法对螺旋桨的受力特点进行分析，在此基础上给出复合材料螺旋桨性能提升的原理性说明；假设厚度分布与拱度分布不发生变化，推导了桨叶变形后螺旋桨几何参数的数学表达式；以某型螺旋桨为对象，利用建立的流固耦合算法，研究了复合材料螺旋桨桨叶变形特性及变形对水动力性能的影响，并给出了螺旋桨在不同工况下的最佳几何形状．研究表明：螺旋桨在不同工况下均具有最佳几何形状，相比于刚性桨，处于最佳形状的螺旋桨其效率均有提升，离设计工况点越远效率提升越明显．

英文摘要：

Effect of blade deformation of composite propellers on their hydrodynamic performance was evaluate by coupled panel and finite element methods. The pressure distribution and hydrodynamic performance was analyzed through potential-based panel method. The reason why the composite pro- peller could improve the performance was explained. The mathematic expression of geometrical pa- rameters of deformed propellers was educed on the assumption that thickness and camber distribution of the section were fixed. The deformation characteristic of a certain propeller and the effect of blade deformation were predicted. The optimum geometry of the propeller in different operating conditions was given. Result shows that the propulsive efficiency of propeller with optimum geometry in differ- ent operating conditions can be improved and the efficiency improves more when the propeller is at the operating condition far away from design condition.