摘要
研究高超声速滑翔飞行器在平衡滑翔条件下,飞行速度、速度倾角、飞行纵程、飞行高度等状态变量的求解。利用理论推导求得了飞行速度、飞行纵程、飞行高度与速度倾角之间的解析表达式,通过四阶龙格-库塔方法获得速度倾角的数值解,利用曲线拟合理论得到速度倾角的近似解。仿真结果表明平衡滑翔条件下速度倾角与飞行时间呈现非线性关系,飞行速度、飞行纵程和飞行高度的解析解都能很好的表征数值解。
The solutions of flight speed,path angle,longitudinal range,altitude for hypersonic glide vehicle under the condition of equilibrium glide are studied.The analytical expressions between flight speed,longitudinal range,altitude and flight path angle are obtained by theoretical derivation,and the numerical solution of flight path angle is obtained by fourth-order Runge-Kutta method.The approximate solution of flight path angle is obtained by using curve fitting theory.The simulation results show that there is a nonlinear relationship between flight path angle and flight time under the condition of equilibrium glide,and the analytical solutions of flight speed,longitudinal range and altitude can well characterize the numerical solution.
作者
孟繁卿
田康生
MENG Fan-qing;TIAN Kang-sheng(Air Force Early Warning Academy,Department of Graduates,Hubei Wuhan 430019,China;Air Force Early Warning Academy,No.4 Department,Hubei Wuhan 430019,China)
出处
《现代防御技术》
2020年第5期38-43,共6页
Modern Defence Technology
关键词
高超声速
平衡
滑翔
状态变量
解
hypersonic
equilibrium
glide
statevariable
solution
