本文提出了一族(三种)旋转式风帆的风洞模型试验结果及数值计算,其升力系数比近代出现的圆弧形刚性帆高出几倍以上,能在低风速下获得较大的船舶推力,而附加的功率又非常小,并具有能在船舶上应用的可行性。在试验基础上,本文应用速度涡层法对物面切向运动所引起的势流环量提出了一个估算公式,用以预报转带帆的升力,与试验结果非常接近。 In this paper, the wind tunnel model test results and numerical calculations for a family of three (three) rotary sails are presented. The lift coefficient is more than several times higher than the arcuate rigid sails of modern times, and can obtain larger ship thrust at low wind speeds , While the additional power is very small and has the feasibility to be used on board ships. Based on the experiment, an estimation formula of the potential circulation caused by the tangential movement of the object surface is proposed by using the velocity vortex method to predict the lift of the turret sail, which is very close to the experimental result.