摘要
为探究多旋翼植保无人机在不同工况下对施药效果的影响,明确两款多旋翼植保无人机结构设计优缺点,规范植保无人机在飞防作业中的参数设置。试验以两款多旋翼植保无人机为对象,采用CFD仿真模拟植保无人机在不同工况下的流场分布、风场幅宽、飘移情况。结果表明:两款植保无人机主要风场幅宽可达6~12 m,次要风场幅宽可达12~20 m;增加飞行高度、飞行速度可以获得较大的喷洒面积,但风场穿透力减弱、雾滴飘移距离增加,顺风作业有利于改善施药效果;四旋翼植保无人机相较于六旋翼植保无人机平衡性更好,下压力及抗飘移能力都有一定优势,且风场分布均匀规整,更有利于喷洒均匀。可为后续植保无人机机型结构优化提供思路和为植保无人机飞防作业参数设置提供理论依据。
In order to explore the impact of multi-rotor plant protection UAV on pesticide application under different working conditions,the advantages and disadvantages of the structural design of two multi-rotor plant protection UAVs were clarified,and the parameter settings of plant protection UAV in flight prevention operations was standardized.In this experiment,two multi-rotor plant protection UAVs were used to simulate the flow field distribution,wind field width and drift of UAVs under different working conditions.The results showed that the main wind field width of the two types of plant protection UAVs could reach 6-12 m,and the secondary wind field width could reach 12-20 m.Increasing flight altitude and speed could achieve a larger spraying area,but the wind field penetration was weakened and the distance of fog droplet drift was increased.Working in the downwind direction was beneficial for improving the spraying effect.Compared with the six-rotor crop protection drones,the four-rotor crop protection drones have better balance,advantages in downforce and anti drift ability and a uniform and orderly wind field distribution,which is more conducive to uniform spraying.The research results can provide ideas for the structure optimization of plant protection UAV and theoretical basis for the setting of flight control operation parameters of plant protection UAV.
作者
许天富
赵海燕
桑维钧
刘健锋
谢康
孙光军
Xu Tianfu;Zhao Haiyan;Sang Weijun;Liu Jianfeng;Xie Kang;Sun Guangjun(College of Tobacco Science,Guizhou Key Laboratory for Tobacco Quality Research,Guizhou University,Guiyang,550025,China;Institute of Entomology,Guizhou University,Guiyang,550025,China;Guizhou Province Company,China National Tobacco Corporation,Guiyang,550001,China)
出处
《中国农机化学报》
北大核心
2024年第7期87-96,共10页
Journal of Chinese Agricultural Mechanization
基金
中国烟草总公司贵州省公司科技项目(2022XM10)
国家烟草专卖局标准项目(2021B030)。
关键词
植保无人机
数值模拟
飞行高度
飞行速度
风速
plant protection UAV
numerical simulation
flight height
flight speed
wind speed
