摘要
本文提出了两种近似估计稳态尾旋平衡点的方法。一种是通过忽略一些对稳态尾旋影响不大的参数,理论上得出了稳态尾旋时各量的近似值;另一种方法是通过计算机,运用最优化方法——DFP变尺度法,算出平衡点的值,从而大大缩短了尾旋运动的数字仿真时间,为改进尾旋的研究提供了方便。
Two approximate methods for predicting the equilibrium point of steady-state spin are presented. Firstly approximate values of state variables during steady-state spin are determined analytically by neglecting certain parameters which have trivial influence on the spin. In the second method the state variables of the equilibrium point are calculated by a digital computer by using the optimization method------DFP varying scaling method. In this way, the computing timefor digital simulation of spin motions is shortened and thus it provides convenience for the study of spin problems.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1989年第1期A055-A059,共5页
Acta Aeronautica et Astronautica Sinica
关键词
尾旋
平衡点
理论
预测法
变尺度法
spin, steady state equilibrium point, six-degree-of-fre- edom motions, analytical prediction method, varying scaling method.
