1. Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, China Aircraft Strength Research Institute, Xi’an 710065, China;
2. School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China
Abstract：In order to explore the drop damage characteristics of civilian light and small unmanned aerial vehicles (UAVs), we have carried out two types of civil light and small UAVs drop tests to study the impact load, deformation modes of them when they fall at a certain height. The fall damage and load differences caused by the structural differences of different types of UAVs have been compared and analyzed. The results show that the effective landing gear buckling and deformation is used to achieve the effect of energy absorption and load reduction when the UAV adopts an integrated aluminum alloy landing gear, while the energy absorption effect of the embedded landing gear is relatively poor; When the multi-rotor UAVs fall in a vertical upright attitude, the damage is mainly concentrated on the landing gear, the arm and the bottom of the fuselage. In particular, the arm is at the risk of breaking at the root during the fall. The root structure strength of the UAVs arm can be appropriately optimized and strengthened; Compared with the built-in battery, the external snap-on battery will fly away from the body when subjected to an impact, and a secondary impact may occur. The built-in batteries are safer than the external snap-on batteries.
郭亚周1，刘小川1，白春玉1，张永杰2，黄颖杰2，王亚锋1. 民用轻小型无人机跌落测试试验及损伤特性研究[J]. 振动与冲击, 2021, 40(22): 175-181.
GUO Yazhou1,LIU Xiaochuan1,BAI Chunyu1,ZHANG Yongjie2,HUANG Yingjie2,WANG Yafeng1. Drop test and damage characteristics of civil light and small UAVs. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(22): 175-181.
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