中文摘要：

为了研究可调螺距桨调距过程中几何参数对水动力性能的影响规律,采用坐标变换原理模拟调距过程和桨叶剖面的畸变,并结合面元法理论对调距桨的水动力性能进行预报.首先将JDC7704桨在初始螺距下水动力参数的计算值与敞水实验值进行对比,验证了文中数值方法的准确性;之后在变调距角下,分析了初始设计进速系数、纵倾角、侧斜角、盘面比以及毂径比几个参数对调距桨水动力性能的影响.结果表明：水动力转叶力矩受设计进速、纵倾角、侧斜角、盘面比变化的影响十分明显;调距工况变化时,转叶力矩所受影响的程度及其趋势也会发生变化.

英文摘要：

In order to reveal the influence of geometric parameters on the hydrodynamic performance of controllable pitch propellers,both the controllable pitch process and the blade section distortion are simulated based on the principle of coordinate transformation,and the hydrodynamic performance of controllable pitch propellers is predicted by means of the panel method. First,with the propeller JDC7704 at the initial pitch as the research objective,the proposed simulation method is proved to be correct by comparing the numerical results of the hydrodynamic parameters with the data of the open water experiment. Then,by adjusting the pitch angle,the effects of initial advance coefficients,rake angle,skew angle,blade area ratio and hub diameter ratio on the hydrodynamic performance of controllable pitch propellers are discussed. The results show that the initial advance coefficients,rake angle,skew angle and blade area ratio have significant effects on the blade spindle,and the degrees and tendencies of the effects change under different pitch conditions.