基于离子风电推进系统的平流层飞艇飞行轨迹分析

针对传统螺旋桨受大气密度等环境变化影响,推力和效率显著下降的特点,提出将新型离子风电推进系统应用于平流层飞艇,建立动力学模型和相应推力模型,通过Simulink模块开展轨迹跟踪与定点控制仿真,并对15 km到30 km高度上螺旋桨和离子风作为平流层飞艇主动力的飞行轨迹进行对比分析。结果表明,40 kW功率下,在20 km以上高度,离子风动力飞艇的飞行曲线偏移量与瞬态响应时间远小于螺旋桨动力飞艇。通过优化离子风推进器的结构,选取最佳电压和电极间隙,有可能实现离子风作为飞艇的主动力。

Flight Path Analysis of Stratospheric Airship Based on Ionic Wind Power Propulsion System

In view of the characteristics that the thrust and efficiency of a traditional propeller are significantly reduced due to the influence of atmospheric density and other environmental changes, a new type of ion wind power propulsion system is proposed to apply to the stratospheric airship, the dynamics model and the corresponding thrust model are established, the trajectory tracking and fixed point control simulation are carried out through the Simulink module, and the flight path of the propeller and ion wind as the main power of the stratospheric airship at a height from 15 km to 30 km is compared and analyzed. The results show that, at a power of 40 kW and a height above 20 km, the offset and transient response time of the flight curve of the ionic powered airship are far less than those of the propeller powered airship. By optimizing the structure of ion wind propeller and selecting the best voltage and electrode gap, it is possible to realize ion wind as the main thrust engine of airship.