Aero-structural design of joined-wing aircraft based on high-fidelity model

作     者：Cheng HE Fengjiang ZHAN Luchuang MA Gang CHEN Jianying MA Cheng HE;Fengjiang ZHAN;Luchuang MA;Gang CHEN;Jianying MA

作者机构：Unmanned Air Vehicle Research InstituteNanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Advanced Technology for Small and Medium-sized UAVMinistry of Industry and Information TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China Aerospace System Engineering ShanghaiShanghai 201108China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2024年第37卷第4期

页      面：363-377页

核心收录：

学科分类：08[工学] 082501[工学-飞行器设计] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the Fundamental Research FundsfortheCentralUniversities China(No. 56XCA2205402) 

主　　题：Joined-wing configuration Aircraft design Aero-structural design Finite element Wind tunnel test 

摘      要：The joined-wing configuration reduces induced drag and structural weight by connecting the rear wing to the front *** addition,the rear wing can replace the role of the horizontal tail of a conventional aircraft,thus eliminating the aerodynamic drag and weight associated with the horizontal *** particular shape creates a highly coupled relationship between aerodynamics and structure,which must be fully considered during the overall design process to enhance aircraft *** this research,an aero-structural design model of the joined-wing aircraft is constructed based on high-fidelity computational fluid dynamics and structural finite element *** model is able to obtain accurate aerodynamic loads for the non-planar wing and to simulate the statically indeterminate structure of the closed wing *** influence of the joined-wing shape parameters on the aerodynamic and structural disciplines,as well as the influence of geometric nonlinear characteristics,deformation constraints and buckling constraints on the structural weight are all taken into *** model is applied to complete the aero-structural design optimization of a high-altitude long-endurance joined-wing aircraft,and wind tunnel tests are *** test results verify the credibility of the design model proposed and the validity of the design environment.