升力线模型计算代码，将机翼表征为一个沿展向变化的涡线，通过尾涡计算诱导速度，实现计算的封闭。-Lifting line model code, the characterization of the wing along the exhibition to the change of the vortex line, trailing vortex induced velocity calculated closed.

螺旋桨气动性能估算程序，计算拉力，扭矩，功率，精度较高-Propeller aerodynamic performance estimation procedure

OpenProp is a lightweight property file format and related APIs, designed to be easy to load programmatically. It is intended to replace INI files and XML for simple data storage.