Unmanned Aerial Vehicles (UAV) may lose control and collide with other objects in the air, thus causing serious flight safety accidents. In this paper, the impact load and damage mechanism of 4.78 kg quad rotor UAV were studied. First, the accurate numerical model of UAV was established in the explicit dynamic analysis software LS-DYNA. Then the overall drop simulation and test of UAV with two different heights were carried out. Finally, the results were compared and analyzed. The high coincidence of experimental results and simulation results showed that the calculation method and simulation model are reasonable. On this basis, the impact load and damage of UAV in different speeds, heading angles and pitch angles were simulated and analyzed. The results revealed that the heading angle, pitch angle and velocity of UAV during collision have a significant effect on the impact load between UAV and the impacted object. It also affected the damage degree of UAV itself. In the collision, the arm of the UAV tended to break at the position joined to the fuselage. The battery hanging on the fuselage was also liable to separate from the fuselage. The research results of this paper have a certain guiding significance for the formulation of UAV safe flight airworthiness regulations.

Chi Chen

Yazhou Guo

Jun Liu

Jingyu Yu

Yulong Li

Xiaochuan Liu

Fahad Raza

International Journal of Crashworthiness

INTERNATIONAL JOURNAL OF CRASHWORTHINESS 是唯一涵盖与道路车辆（包括汽车、卡车、公共汽车和摩托车）、轨道车辆、航空和航天器、船舶和潜艇以及陆上和海上设施的耐撞性有关的所有问题的期刊。该杂志为发表与学者、设计师和实践工程师相关的原创研究和应用研究提供了一个独特的论坛。 INTERNATIONAL JOURNAL OF CRASHWORTHINESS 发表原创研究论文（全文和简短的通讯）和最先进的评论。INTERNATIONAL JOURNAL OF CRASHWORTHINESS 欢迎有关材料响应质量、车身结构和能量吸收系统的论文在承受突然的动态载荷的情况下，论文集中于新的耐撞结构、约束系统的新概念和现实的事故重建。

The International Journal of Crashworthiness is the only journal that covers all aspects of crashworthiness related to road vehicles (including cars, trucks, buses, and motorcycles), rail vehicles, aircraft and spacecraft, ships and submarines, as well as land and marine facilities. This journal provides a unique forum for publishing original research and applied studies relevant to scholars, designers, and practicing engineers. The journal welcomes original research papers (both full-length and short communications) and cutting-edge reviews. We invite submissions on material response quality, vehicle body structures, and energy absorption systems under sudden dynamic loads, particularly focusing on new crashworthy structures, innovative concepts for restraint systems, and realistic accident reconstructions.

《International Journal of Crashworthiness》是唯一涵盖与道路车辆（包括汽车、卡车、公共汽车和摩托车）、轨道车辆、航空和航天器、船舶和潜艇以及陆上和海上设施的耐撞性相关的所有问题的期刊。该杂志为学者、设计师和工程师提供了一个独特的论坛，发表原创研究和应用研究。期刊接受原创研究论文（包括全文和简短通讯）以及前沿评论。我们欢迎关于材料响应质量、车身结构和能量吸收系统在承受突发动态载荷情况下的研究，特别是集中于新型耐撞结构、约束系统的新概念和实际事故重建的论文。

Research on dropping test and numerical simulation for unmanned aerial vehicle

In this paper, the impact load and damage mechanism of 4.78 kg/s UAV is studied, which shows significant differences in the ability of the UAV to lose control and collide with other objects in the air.

Category	Quartile
工程技术	4
工程技术, 工程制造	4
工程技术, 工程机械	4

Research on dropping test and numerical simulation for unmanned aerial vehicle

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Category	Quartile
ENGINEERING, MECHANICAL	3