空军工程大学学报2024，Vol.25Issue(4)：79-85,93,8.DOI:10.3969/j.issn.2097-1915.2024.04.012
子母无人机多体分离气动特性模拟
Simulation Study on Aerodynamic Characteristics of Multi-Body Separation of Sub-Mother UAV
摘要
Abstract
In the process of multi-body separation of sub-mother UAV,the analysis of aerodynamic inter-ference characteristics is an important research direction in swarm UAV launch technology.In this paper,based on the dynamic nested unstructured polyhedral mesh technology,the unsteady N-S equation of the flow field and the six-degree-of-freedom motion equation of the rigid body are coupled to realize the accu-rate simulation of the multi-body separation process of the sub-mother UAV.Firstly,the aerodynamic in-terference zone of the parent UAV and the separation mode of the child UAV are analyzed.Secondly,the aerodynamic interference characteristics of the sub-mother UAV and between the sub-UAV and the sub-UAV and the sub-UAV in the overall state are calculated.Finally,according to the change of the motion state of the sub-UAV in the process of multi-body separation,the safety characteristics were evaluated.The results show that compared with deceleration separation,accelerated separation can get out of the aer-odynamic interference region faster and has higher safety.Moreover,with the increase of the number of sub-UAVs,the distance of the wings of the sub-UAV decreases continuously,and this also weakens the influence of the wingtip vortex on the wing surface of the sub-UAV to a certain extent and increases the lift of the sub-UAV.关键词
无人机/气动干扰/多体分离/计算流体力学/嵌套网格技术/六自由度方程Key words
UAV/aerodynamic interference/multi-body separation/computational fluid dynamics/overset mesh method/six-degree-of-freedom motion equation分类
航空航天引用本文复制引用
李云龙,许晓平,周洲,拜昱..子母无人机多体分离气动特性模拟[J].空军工程大学学报,2024,25(4):79-85,93,8.基金项目
陕西省重点研发计划(2023-YBGY-373) （2023-YBGY-373）
陕西省自然科学基础研究计划(2023-JC-YB-010,2023-JC-QN-0043) （2023-JC-YB-010,2023-JC-QN-0043）
