飞行器气动与隐身综合特性数值分析  

Numerical Analysis on the Aerocraft Aerodynamics/Scattering Performance

作　　者：于哲峰[1] 唐小伟[1] 张志成[1] 王泽江[1] 梁世昌[1] 简和祥[1] 

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《宇航学报》2010年第2期349-354,共6页Journal of Astronautics

基　　金：国家自然科学基金(10902120)

摘　　要：开展了飞行器气动与隐身综合特性数值研究,编制了相应的计算与分析程序。该程序的主要功能包括:飞行器外形参数化和计算网格的生成,气动特性计算(利用有限体积方法求解NS方程),隐身特性计算(利用时域有限差分方法求解Maxwell方程),飞行器气动与隐身综合特性分析。作为应用的一个实例,对一种带翼钝锥体的气动和隐身综合特性进行了分析,并设计出两种新的外形,新外形的气动和隐身综合特性与原形相比有明显提高。The aerodynamics and stealth performance of hypervelocity aeroeraft were researched using numerical method and the corresponding computing and analyzing program was implemented. This program includes four main parts： Gathering the parameters of the aerocraft outer shape and generating computing grids; Calculating the aerodynamics performance by numerically solving the N-S equations; Calculating the stealth performance using finite difference time domain method ; Analyzing the syntheti- cally performance of aerodynamics and stealth. To test our method, the aerodynamics and stealth performances of a blunt cone with three wings was calculated and analyzed, and two new profiles were designed. The results showed that the aerodynamics and stealth performances have been improved significantly.

关 键 词：隐身 气动 时域有限差分法 N—S方程 数值分析 

分 类 号：V412[航空宇航科学与技术—航空宇航推进理论与工程]