In this article the procedures are de-scribed for determining free-vortex segment properties.Characteristics method is used to design nozzle Milch produces free-vortex seg-ment. 本文提出了确定气动窗口所需自由旋涡气动特性的过程，讨论了特征线方法在非对称超音速喷管设计中的应用，该喷管被用来产生自由旋涡流动。
Two types of solid micro-thruster structure won designed based on MEMS technique, one of which with discrete and abnormal laval nozzle. 摘要设计了两种基于微光机电技术的固体微推力器结构，其中一种结构具有不连续的非正常拉瓦尔喷管。
Making use of these results, we obtained an exact solution for the incompressible potential flow through a two-dimensional Laval nozzle. 利用这些结果得到了二元拉伐尔喷管内不可压缩位势流动的精确解。
