首页|Aero-structural design of joined-wing aircraft based on high-fidelity model
Aero-structural design of joined-wing aircraft based on high-fidelity model
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The joined-wing configuration reduces induced drag and structural weight by connecting the rear wing to the front wing.In 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 tail.This particular shape creates a highly coupled relationship between aerodynamics and structure,which must be fully considered during the overall design process to enhance aircraft performance.In this research,an aero-structural design model of the joined-wing aircraft is con-structed based on high-fidelity computational fluid dynamics and structural finite element methods.The model is able to obtain accurate aerodynamic loads for the non-planar wing and to simulate the statically indeterminate structure of the closed wing configuration.The influence of the joined-wing shape parameters on the aerodynamic and structural disciplines,as well as the influence of geomet-ric nonlinear characteristics,deformation constraints and buckling constraints on the structural weight are all taken into consideration.The model is applied to complete the aero-structural design optimization of a high-altitude long-endurance joined-wing aircraft,and wind tunnel tests are con-ducted.The test results verify the credibility of the design model proposed and the validity of the design environment.
Joined-wing configurationAircraft designAero-structural designFinite elementWind tunnel test
Cheng HE、Fengjiang ZHAN、Luchuang MA、Gang CHEN、Jianying MA
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Unmanned Air Vehicle Research Institute,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
Key Laboratory of Advanced Technology for Small and Medium-sized UAV,Ministry of Industry and Information Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
Aerospace System Engineering Shanghai,Shanghai 201108,China
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