垂直起降固定翼无人机的翼尖垂尾设计分析  

Design Analysis of Wing Tip Vertical Tail of the Vertical Takeoff and Landing Fixed-wing UAV

作　　者：张飞 王云 孙一方 谭锟 Zhang Fei;Wang Yun;Sun Yifang;Tan Kun(School of Aircraft Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学飞行器工程学院

出　　处：《航空工程进展》2019年第5期628-633,663,共7页Advances in Aeronautical Science and Engineering

摘　　要：垂直起降固定翼无人机兼具固定翼飞机速度快、航程远和多旋翼无人机垂直起降、可悬停作业的优点,研究其翼尖垂尾对整机气动特性的影响具有重要意义。垂直起降固定翼无人机采用翼尖下垂尾的设计可以在充当垂尾使用的同时兼具翼尖小翼和起落架的作用。对比下垂尾、上垂尾、翼梢端板和常规布局四种翼尖设计,采用LBM-LES算法、壁面自适应局部涡粘大涡模拟湍流模型对四种设计的气动特性进行仿真模拟分析。结果表明:翼尖下垂尾在平飞状态时比其他三种设计气动效率更高,在垂直起降或悬停状态时,抗侧风稳定性更好。Vertical takeoff and landing(VTOL)fixed-wing UAV has the advantages of fast speed,long range,vertical takeoff and landing and hovering operation of fixed-wing UAV.It is of great significance to study the influence of the vertical tail of its wing tip on the aerodynamic characteristics of the whole UAV.The vertical take-off and landing fixed-wing UAV is designed with the drooping tail of the wing tip to be used as a vertical tail with both wingtips and landing gear.Four wingtip designs of the drooping tail,upper vertical tail,wing tip end plate and conventional layout are compared the aerodynamic characteristics of the four designs are simulated and analyzed by using LBM-LES algorithm and the wall self-adaptive local vortex viscous large eddy simulation turbulence model.The analysis results show that the drooping tail of the wing tip is more efficient than the other three designs in the leveling flight state;and its stability against the crosswind is better in the vertical takeoff and landing or hovering state.

关 键 词：无人机 垂直起降固定翼 翼尖垂尾 气动特性 

分 类 号：V275.2[航空宇航科学与技术—飞行器设计]