摘要
为研究中段弹头的表面温度及辐射特性,利用Lowtran7计算太阳和地球大气的红外与可见光辐射,依据粗糙表面光散射理论计算弹头对太阳、地球大气和地球反照辐射的吸收和散射。采用控制容积法发展了圆柱坐标系下三维非稳态导热的隐式离散方程,迭代求解得到弹头表面的温度。以一射程4000km的中段弹头为例,计算了发动机关机点后2000s内,弹头表面的温度和辐射的变化。
The temperature and radiation characteristics of midcourse ballistic missile are calculated. The Lowtran code is used to compute the infrared and visible radiation of the sun, and infrared radiation of the air. Absorption and scattering of solar and air radiation by the ballistic missile are computed based on the light scattering theory of rough surface. The control volume method is used to establish the discretion equations of unsteady 3-D conduction in cylindrical coordinate. The equations are solved with iteration to give temperature of the ballistic missile. The temperature and radiation characteristics of one 4000kin ranging missile in 2000s after shut down of the rocket engine are computed to validate the computation methods.
出处
《光学技术》
CAS
CSCD
北大核心
2009年第1期6-9,共4页
Optical Technique
基金
国家自然科学基金资助项目(10702020)
关键词
应用光学
中段弹头
红外辐射
可见光辐射
非稳态三维温度场
applied optics
midcourse ballistic missile
infrared radiation
visible radiation
unsteady 3-D temperature
