临近空间浮空器区域驻留控制策略研究

摘要

In order to achieve the aim of near space aerostat in territory-hovering,based on the analysis of the thermodynamic environment condition, the coupled aerodynamic and thermodynamic model of high altitude balloon containing the ballonet was established.Based on the special wind field of quasi-zero wind layer,a flight control strategy was designed to achieve the aim of territory-hovering by aerostat.The adjustment of flight altitude was controlled by changing volume of ballonet that succeeded in the balloon zonal direction movement through reverse air flow in quasi-zero wind layer of zonal wind,with utilizing propeller to generate a control force to achieve meridional direction control,and numerical simulation was carried out with ECMWF wind field data.The simulation results show that aerostat can fly within the territory at latitude 41°(N)to 43°(N),longitude 86.5°(E)to 87.1°(E)as long as 7 days,which proves the possibility of using quasi zero wind to achieve the aim of near space aerostat in territory-hovering.%为了实现临近空间浮空器区域驻留飞行,基于对热环境的分析,建立了带有副气囊高空气球的空气动力学与热力学耦合动力学模型.基于准零风层特殊风场,设计了临近空间浮空器区域驻留飞行控制策略,通过副气囊调节飞行高度,利用准零风层上下纬向风方向相反的特点实现东西方向控制,用螺旋桨控制实现南北方向控制,并利用ECMWF风场数据进行了数值仿真.仿真结果表明,临近空间浮空器可以在纬度41°(N)~43°(N),经度86.5°(E)~87.1°(E)之间的区域范围内飞行7天,证明了利用准零风层风场实现临近空间浮空器区域驻留飞行的可行性.