两艘多用途船的螺旋桨设计研究

以2艘多用途船螺旋桨设计为例，运用螺旋桨理论设计与模型试验为手段，探索了特定条件下加大桨叶后倾角（增加桨叶梢与船底板间隙）、改变螺旋桨叶面积以及增加桨叶侧斜角对诱导脉动压力和效率的影响。结果表明：采用减小空泡裕度增加盘面比的措施，对降低脉动压力的效果最为显著；增大侧斜角措施的效果居中；通过改变后倾角增大叶梢与船底板间隙的措施，降低脉动压力效果相对要小一些。

Study of Propeller Design for Two Multi-Purpose Vessels

By Taking design of two multi-purpose vessel propellers as examples, the effects of increasing propeller rake, changing blade area and increasing propeller skew on propeller efficiency and induced pressure fluctuation are investigated by means of theoretical propeller design method and model tests. The results of the study indicate that reducing cavitation margin to in- crease blade area can get significant effectiveness for propeller induced pressure pulse reduction, increasing propeller skew also have obvious effectiveness for the pressure pulse reduction, the effectiveness from the clearance between propeller tip and ship hull by increasing propeller rake is relatively small.