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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。
Near-space aircraft flight environment has strong spatio-temporal characteristics, changes in space and time will have some environmental fluctuations, and thus affect the near-space hypersonic flight. Taking the hypersonic return near space as the object of study, the influence of several typical environmental factors on the long-range and near-space hypersonic flight was analyzed. The envelope of the influence of environmental factors under the flight condition with zero angle of attack range. The simulation results show that the atmospheric density fluctuates with the diurnal and seasonal fluctuations to a certain extent, and the influence of geomagnetic disturbance and wind disturbance is very significant. For the intercontinental flight, these environmental factors are very important in the design of the control system and the flight mission Must be considered.