一种视频监控用系留型四旋翼无人飞行器的结构设计

Structure Design of a Tethered Quad-rotor Unmanned Aerial Vehicle Used for Video Surveillance

多旋翼无人飞行器容易实现自由起降,机动性好,在军民两用方面有着非常广泛的应用价值。通过分析四旋翼飞行器的飞行原理,文中给出了一种视频监控用系留型四旋翼无人飞行器的结构设计方案。重点阐述了该结构的系统功能与组成、材料的选择及收放式起落架设计。建立有限元模型对该结构在风载荷、旋翼升力及降落冲击工况下的强度进行计算,并根据有限元计算结果对结构进行了优化。结果表明,该结构设计满足技术指标要求。

Multi-rotor unmanned aerial vehicle（ UAV） has wide applications in the military and civil fields,due to its merits such as taking off and landing vertically,good maneuverability. In this paper,the structure design scheme of a tethered quad-rotor UAV used for video surveillance is proposed based on the flight principle of quad-rotor UAV. The function and compostion,material selection,the design of retractable landing gear of the UAV are mainly discussed. Finite element models are created to compute the structure strength under the working conditions of wind load,rotor lift and landing impact. Structure optimization is carried out according to the finite element analysis. Results show that the structure design satisfies the technique requirements.