无人直升机自转着陆功能设计

Design of autorotation landing for unmanned helicopter

文章以单旋翼带尾桨的小型无人机作为对象,研究发动机在空中停车时的安全着陆问题。根据直升机自转飞行的经验,将自转着陆分成3个阶段,为无人直升机设计了自转着陆功能。为了使直升机触地速度降到最低,多次使用软化控制指令,并且巧妙地设计软化因子。实验表明,设计自转着陆功能能够使无人直升机在发动机停车的情况下安全着陆。研究成果对无人直升机的自转着陆问题有一定的参考意义。

This paper takes a small unmanned helicopter with a single rotor and a tail rotor as the object,and studies the safe landing problem when the engine is parked in the air.According to the experience of helicopter autorotation flight,autorotation landing is divided into three stages,and autorotation landing function is designed for unmanned helicopter.In order to minimize the touchdown speed of the helicopter,the softening control command is used many times,and the softening factor is cleverly designed.Experiments show that the autorotation landing function designed in this paper can make the unmanned helicopter land safely when the engine is parked.The research results have certain reference significance for the autorotation landing of unmanned helicopters.