飞机扰动运动方程特征根的数值求解

The Exact Solution of Characteristic Equation of Flight Disturbance Motion

用一元四次方程精确解的解析公式 ,研究飞机扰动运动特征方程的求解方法 ,并讨论计算机编程中应注意的若干问题。通过对某型飞机典型扰动运动方程特征根的精确求解 ,表明本方法对研究飞机的运动模态有一定的积极意义。

This paper studies out the solving method of characteristic equation of disturbance motion by using the exact solution of quartic equation, and discusses some problems needing attention in computer programming. Through numerical test of some typical model of flight disturbance motion, it shows that the above method has obvious advantages in studying the model of flight .