A modified trailing vortex wake model of propeller is introduced to describe the distortion and separation of the trailing vortexsheet.
采用了一个修正的螺旋桨尾涡模型，来模拟导管螺旋桨尾涡片的扭曲变形及分离现象。
2
Finally, in view ofvortexsheet, the formula of virtual mass has been re-derived.
最后，本文从涡层的角度重新推导了翼型虚拟质量计算公式。
3
A vortex member is arranged on the vortex net board. The vortex member is a spiral twist sheet with a spiral Angle. The axial shape of the spiral twist sheet is circular.