Fortran版本的升力线模型源代码，目前只能计算平板机翼，尾涡模型采用的刚性螺旋尾涡。-Fortran version of the the lift line model source code can only calculate the flat-panel wing the rigid spiral trailing vortex wake model used.

计算涨紧缸筒的过盈量，正应力，以及壁厚，缸筒与螺旋套管之间的摩擦系数之间的关系-Calculation tensioner cylinder amount of interference, the normal stress and the relationship between the friction coefficient of the wall thickness between the cylinder and the spiral casing between