风场综合利用的新型平流层浮空器轨迹设计

Trajectory Design of a Novel Stratospheric Aerostat Based on Comprehensive Utilization of Wind Fields

针对平流层底部准零风层特点,提出一种基于风场综合利用进行长时区域驻空的新型平流层浮空器,系统采用南瓜形超压气球体制,建立系统的浮重模型、推阻模型和能源模型,利用迭代算法完成了总体方案设计。在此基础上,建立动力学模型和高度调控模型,针对我国某地风场模型,设计东西、南北方向独立控制区域驻留策略以及基于风场综合利用的协同控制区域驻留策略,通过SIMULINK模块开展区域驻留仿真,并对五种控制模式下的飞行轨迹进行对比分析。

With analyses of the quasi-zero wind layer at the bottom of the stratosphere,a stratospheric aerostat system based on the comprehensive utilization of the wind fields is proposed.A pumpkin-shaped super pressure balloon is adopted.With the establishment of the mass model,thrust-resistance model and energy model,the principal design of the system is carried out by the iterative algorithm.After that,the dynamic model and altitude control model are built.With the wind fields,the control strategies based on the independent control of the east-west,north-south directions and cooperation control of the directions are investigated for station-keeping of the stratospheric aerostat.Based on the simulation of the SIMULINK modules,the flight trajectories with five control modes are analyzed.