Transonic Rudder Buzz on Tailless Flying Wing UAV

作     者：许军 马晓平 

作者机构：College of AeronauticsNorthwestern Polytechnical University UAV Research InstituteNorthwestern Polytechnical University 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2015年第32卷第1期

页      面：61-69页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Natural Science Foundation of China(No.61074155) the Shaanxi Provincial Natural Science Foundation of China(No.2013JM015) 

主　　题：flying wing unmanned aerial vehicle(UAV) buzz CFD/CSD transonic flow geometric nonlinearities 

摘      要：Transonic rudder buzz responses based on the computational fluid dynamics or computational structural dynamics(CFD/CSD)loosely method are analyzed for a tailless flying wing unmanned aerial vehicle(UAV).The Reynolds-averaged Navier-Stokes(RANS)equations and finite element methods based on the detailed aerodynamic and structural model are established,in which the aerodynamic dynamic meshes adopt the unstructured dynamic meshes based on the combination of spring-based smoothing and local remeshing methods,and the lower-upper symmetric-Gauss-Seidel(LU-SGS)iteration and Harten-Lax-van Leer-Einfeldt-Wada(HLLEW)space discrete methods based on the shear stress transport(SST)turbulence model are used to calculate the aerodynamic *** constraints of the rudder motions are fixed at the end of structural model of the flying wing UAV,and the structural geometric nonlinearities are also considered in the flying wing UAV with a high aspect *** interfaces between structural and aerodynamic models are built with an exact match surface where load transferring is performed based on *** flying wing UAV transonic buzz responses based on the aerodynamic structural coupling method are studied,and the rudder buzz responses and aileron,elevator and flap vibration responses caused by rudder motion are also *** effects of attack,height,rotating angular frequency and Mach number under transonic conditions on the flying wing UAV rudder buzz responses are *** results can be regarded as a reference for the flying wing UAV engineering vibration analysis.