飞机外挂物发射/投放运动的数值仿真方法

Numerical Simulation Method of Motion of External Stores Ejected/Dropped from an Aircraft

外挂物发射／投放分离安全性问题属于飞机／外挂物相容性问题中飞行力学部分的一个主要方面，数值仿真是解决这一问题的重要手段。其原理是先建立起飞机／外挂物的空间六自由度动力学和运动学模型后，再建立两者的相对运动学关系式和安全分离判据，依照判据就可进行安全性判断。最后，结合示例介绍了这种方法在工程实践中的应用。

Separation safety of external stores ejected/dropped from an aircraft is a main aspect of aircraft/external stores flight dynamics compatibility.Numerical simulation is one important way to resolve this kind of problem.Its principle is:to establish the 6dimensional space dynamics and kinematics equations of the aircraft/external stores,kinematics relation between aircraft and external stores,and safeseparation criteria,then it can be proceed to judge the separation safety of aircraft/external stores.In this paper,two examples is given which describes how to apply this method to engineering practice.