Print Email Facebook Twitter Concurrent wing and high-lift system aerostructural optimization Title Concurrent wing and high-lift system aerostructural optimization Author van den Kieboom, K.T.H. Elham, A. (TU Delft Flight Performance and Propulsion; Institute of Aircraft Design and Lightweight Structures; Technical University of Braunschweig) Date 2017-09-15 Abstract A method is presented for concurrent aerostructural optimization of wing planform, airfoil and high lift devices. The optimization is defined to minimize the aircraft fuel consumption for cruise, while satisfying the field performance requirements. A coupled adjoint aerostructural tool, that couples a quasi-three-dimensional aerodynamic analysis method with a finite beam element structural analysis is used for this optimization. The Pressure Difference Rule is implemented in the quasi-three-dimensional analysis and is coupled to the aerostructural analysis tool in order to compute the maximum lift coefficient of an elastic wing. The proposed method is able to compute the maximum wing lift coefficient with reasonable accuracy compared to high-fidelity CFD tools that require much higher computational cost. The coupled aerostructural system is solved using the Newton method. The sensitivities of the outputs of the developed tool with respect to the input variables are computed through combined use of the chain rule of differentiation, automatic differentiation and coupled-adjoint method. The results of a sequential optimization, where the wing shape and high lift device shape are optimized sequentially, is compared to the results of simultaneous wing and high lift device optimization. Subject Aerostructural optimizationCoupled adjoint sensitivity analysisHigh lift devices To reference this document use: http://resolver.tudelft.nl/uuid:63362c33-744a-468d-bf64-487339878395 DOI https://doi.org/10.1007/s00158-017-1787-0 ISSN 1615-147X Source Structural and Multidisciplinary Optimization, 57 (3), 947–963 Part of collection Institutional Repository Document type journal article Rights © 2017 K.T.H. van den Kieboom, A. Elham Files PDF 10.1007_s00158_017_1787_0.pdf 2.28 MB Close viewer /islandora/object/uuid:63362c33-744a-468d-bf64-487339878395/datastream/OBJ/view