南京航空航天大学学报（英文版）2023，Vol.40Issue(z2)：1-8,8.DOI:10.16356/j.1005-1120.2023.S2.001
某无人机弹射起飞动力学分析与安全性研究
Dynamic Analysis and Safety Study of Catapult Launch for UAV
摘要
Abstract
Aiming at the selection of structural parameters and layout of the launch method,which are concerned by technicians at the initial stage of designing a new unmanned aerial vehicle(UAV),a dynamic model of catapult launch is established by taking a UAV as the research object.On this basis,the influence of the main parameters such as the length of the launch bar and the installation point of the launch bar on the fuselage on safety of the UAV catapult launch is analyzed,and the simulation results show that increasing the length of the launch bar,decreasing the horizontal distance and increasing the vertical distance between the installation point and the centroid of the UAV can increase the pitch angle of the UAV,reduce the axial load and slow down the oscillation of the nose landing gear during the process of catapult launch,which can effectively improve safety of catapult launch.When the length of the launch bar is increased to 800 mm,the horizontal distance is decreased to 289 mm or the vertical distance is increased to 365 mm,there is a risk that the nose landing gear will leave the track surface in advance.When the horizontal distance is increased to 589 mm or the vertical distance is decreased to 265 mm,the sudden-extension of the nose landing gear will appear.关键词
无人机/弹射起飞/弹射杆/前起落架/动力学Key words
unmanned aerial vehicle(UAV)/catapult launch/launch bar/nose landing gear/dynamics分类
航空航天引用本文复制引用
罗江雪,彭一明,聂宏,魏小辉,郝嘉煜..某无人机弹射起飞动力学分析与安全性研究[J].南京航空航天大学学报（英文版）,2023,40(z2):1-8,8.基金项目
This work was supported in part by the Fundamental Research Funds for the Central Universi-ties(No.NT2022002),the National Natural Science Foun-dation of China(No.52202441),the Natural Science Foun-dation of Jiangsu Province(No.BK20220910),and the Na-tional Defense Outstanding Youth Science Foundation(No.2018-JCJQ-ZQ-053). （No.NT2022002）
