基于重叠网格的固定翼无人机尾流冲浪参数研究  

Wake Surfing Parameters of Fixed Wing Unmanned Aerial Vehicle Based on Overset Grid

作　　者：陈宽明[1] 王腾 刘泽宇 苏润之 卢鹏 CHEN Kuanming;WANG Teng;LIU Zeyu;SU Runzhi;LU Peng(College of Air Traffic Management,Civil Aviation Flight University of China,Guanghan 618307,Sichuan,China;Taiyuan International Airport Co.,Ltd.,Taiyuan 030031,Shanxi,China)

机构地区：[1]中国民用航空飞行学院空中交通管理学院,四川广汉618307 [2]太原国际机场有限责任公司,山西太原030031

出　　处：《重庆交通大学学报（自然科学版）》2024年第10期116-121,136,共7页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：中飞院面上项目(J2021-083)。

摘　　要：在编队飞行中合理利用尾流冲浪技术,可使得后机获取明显的增升性能。基于该原理,按照候鸟迁徙飞行时所排成“V”字形设计了两架固定翼无人机组成的编队;利用CFD绘制无人机与流体域的重叠网格,对该飞行编队进行了数值模拟;并对飞行编队的气动参数进行了分析。研究结果表明:在气动作用下,尾流冲浪效应对前机的影响很小,对后机的影响明显;双机纵向间隔和垂直间隔对后机的升力系数、阻力系数、升阻比、俯仰力矩等参数均有影响;后机在合适的位置和迎角下,升力系数可提升11.7%。Reasonable use of wake surfing technology during formation flight will lead to significant lift enhancement performance for the rear aircraft.Based on this principle,a formation consisting of two fixed wing unmanned aerial vehicles was designed according to the"V"shape formed by migratory birds during flight.CFD was used to draw overset grids between the unmanned aerial vehicles and the fluid domain,numerical simulation was conducted on flight formation,and the aerodynamic parameters of the flight formation were analyzed.Research results show that under aerodynamic action,the wake surfing effect has a minimal impact on the front aircraft and a significant impact on the rear aircraft.The longitudinal and vertical spacing of the twin aircrafts affect the lift coefficient,drag coefficient,lift drag ratio,pitch torque and other parameters of the rear aircraft.At the appropriate position and angle of attack,the lift coefficient of the rear aircraft can be increased by 11.7%.

关 键 词：航空工程 编队飞行 尾流冲浪 数值模拟 重叠网格 升力系数 

分 类 号：V323[航空宇航科学与技术—人机与环境工程] X948[环境科学与工程—安全科学]