Abstract This article introduces a process chain for commercial aircraft wing multidisciplinary optimization (MDO) based on high fidelity simulation methods. The architecture of this process chain enables two of the most promising future technologies in commercial aircraft design in the context of MDO. These technologies are natural laminar flow (NLF) and aeroelastic tailoring using carbon fiber reinforced plastics (CFRP). With this new approach, the application of MDO to an NLF forward swept composite wing will be possible. The main feature of the process chain is the hierarchical decomposition of the optimization problem into two levels. On the highest level, the wing planform including twist and airfoil thickness distributions as well as the orthotropy direction of the composite structure will be optimized. The lower optimization level includes the wing box sizing for essential load cases considering the static aeroelastic deformations. In addition, the airfoil shapes are transferred from a given NLF wing design and the natural laminar flow is considered by prescribing laminar–turbulent transition locations. Optimization results of the multidisciplinary process chain are presented for a forward swept wing aircraft configuration on conceptual design level. The results show a fuel burn reduction in the order of 9% for the design mission.
Multidisciplinary optimization of an NLF forward swept wing in combination with aeroelastic tailoring using CFRP
DLR contribution to the LuFo IV joint research project AeroStruct
CEAS Aeronautical Journal ; 8 , 4 ; 673-690
2017-10-10
18 pages
Article (Journal)
Electronic Resource
English
Multidisciplinary optimization (MDO) , Wing optimization , Natural laminar flow (NLF) , Transonic aerodynamics , Aeroelastic tailoring , Carbon fiber reinforced plastics (CFRP) , Static aeroelasticity , Fluid–structure coupling , Reynolds-averaged Navier–Stokes (RANS) , Finite-element method (FEM) Engineering , Aerospace Technology and Astronautics
Aeroelastic tailoring of an NLF forward swept wing
Springer Verlag | 2017
|Aeroelastic tailoring of an NLF forward swept wing
Online Contents | 2017
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