环境因素对远程近空间高超声速飞行的影响  

Effects of environmental factors on the long-range hypersonic flight in near-space

作　　者：郭正雄[1] 张珩[1] 肖歆昕[1] 李文皓[1] 刘开磊[1] 

机构地区：[1]中国科学院力学研究所,北京100190

出　　处：《飞行力学》2013年第1期84-87,92,共5页Flight Dynamics

基　　金：国家自然科学基金资助(11002143)

摘　　要：近空间飞行器的飞行环境具有较强的时空特性,空间和时间的变化均会产生一定的环境波动,进而影响远程近空间高超声速飞行。以近空间高超声速返回过程为研究对象,分析了几种典型的环境因素对远程近空间高超声速飞行的影响,利用飞行仿真实验计算得到环境因素在迎角为零的飞行条件下的影响程度包络范围。仿真结果表明,大气密度随昼夜和季节的波动均对飞行造成一定程度的影响,而地磁扰动和风干扰的影响也十分显著,对于洲际飞行而言,这些环境因素在设计控制系统以及制定飞行任务时必须予以考虑。The flight environment of near-space vehicle has strong spatial and temporal characteristics. The spatial and temporal changes can cause environmental fluctuations and affect the remote near-space hypersonic flight. The impact caused by several environmental factors on the remote near-space hyperson- ic flight has been studied in this paper. The range of impact degree has been calculated by using flight simulation in the condition that the attack angle is zero. The results show that the atmospheric density fluctuations, inclcuding both the circadian and seasonal fluctuations, can influence flight obviously. Also the impact of geomagnetic disturbance and wind interference is also very significant. For the interconti- nental flight, these environmental factors must be considered in the design of control systems and the de- velopment of flight mission.

关 键 词：高超声速 大气密度 地磁活动 风干扰 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程]