空军工程大学学报（自然科学版）2016，Vol.17Issue(3)：6-10,5.DOI:10.3969/j.issn.1009-3516.2016.03.002
考虑气动结构耦合的飞翼无人机嗡鸣振动
Research on Flying Wing UAV Buzz Vibration Considering the Aerodynamic Structural Coupling Effects
摘要
Abstract
Transonic rudder buzz responses and aileron,elevator,flap vibration time responses,are presen-ted by adopting the CFD/CSD loosely coupled method for a tailless flying wing UAV.The RANS N�S e-quations and finite element methods are established based on the detailed aerodynamic and structural mod-el,in which the aerodynamic meshes use the unstructured dynamic meshes based on the combination of the spring�based smoothing and local re�meshing methods.The LU�SGS iteration and HLLEW space discrete methods based on the SST turbulence model are used to calculate the aerodynamic force.The interfaces be-tween the structural and aerodynamic model are built with an exact match surface where load transferring is performed based on 3D interpolation.The constraints of the rudder motions are fixed at the end of the flying wing UAV structural model,and the structural geometric nonlinearities are also considered in the high aspect ratio flying wing UAV.Based on the presented buzz aerodynamic structural coupled method, the flying wing UAV transonic buzz responses and aileron,elevator,flap vibration time responses induced by the rudder motion are studied;the effects of rotating angular frequency on the vibration time responses are also given.关键词
飞翼无人机/嗡鸣/CFD/CSD/松耦合/副翼/振动Key words
flying wing UAV/buzz/CFD/CSD/loose coupling/rudder/aileron/vibration分类
航空航天引用本文复制引用
许军,马晓平..考虑气动结构耦合的飞翼无人机嗡鸣振动[J].空军工程大学学报（自然科学版）,2016,17(3):6-10,5.基金项目
国家自然科学基金(61074155) （61074155）
陕西省自然科学基金(2013JM015) （2013JM015）
