中文摘要：

以某桨的初始设计结果为基础,研究几何参数对水动力和空泡性能的影响.选用NACA叶切面,利用升力面理论用来设计螺距分布和拱弧面形状,设计方案的性能通过面元法进行预报校核,并以预报结果指导方案的改进.研究表明,纵倾对转叶力矩影响较大,如与侧斜搭配合理可以得到性能较优的设计方案;盘面比对推力、效率、转叶力矩、空泡的影响均较为显著.并探讨了几何参数对调距桨水动力和空泡性能的影响规律.

英文摘要：

Based on the initial design of a propeller, the influence on the hydrodynamic performance of controllable pitch propellers according to different geometric parameters is studied. The NACA section is adopted and lifting-surface theory is used to design pitch distribution and the radial camber distribu- tion. Panel method is used to predict the performance of the design decision and the results will guide the improvement of the design. Studies have shown that the trim distribution has a great impact on torquemoment of the blade spindle. The reasonable match between trim and skew could contribute to the performance of the propeller. Meanwhile the area ratio has a remarkable influence on thrust, effi- ciency,torquemoment of the blade spindle and cavitation. This paper reveals the law of influence of ge- ometric parameters on hydrodynamic and cavitation performance, which is referenced for designing controllable pitch propellers.