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Multidisciplinary optimization of an NLF forward swept wing in combination with aeroelastic tailoring using CFRP

Wunderlich, Tobias and Dähne, Sascha and Heinrich, Lars and Reimer, Lars (2017) Multidisciplinary optimization of an NLF forward swept wing in combination with aeroelastic tailoring using CFRP. CEAS Aeronautical Journal, 8 (4), pp. 672-690. Springer. DOI: 10.1007/s13272-017-0266-z ISSN 1869-5582

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Official URL: https://link.springer.com/article/10.1007/s13272-017-0266-z

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. Additionally, 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.

Item URL in elib:https://elib.dlr.de/112721/
Document Type:Article
Title:Multidisciplinary optimization of an NLF forward swept wing in combination with aeroelastic tailoring using CFRP
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wunderlich, Tobiastobias.wunderlich (at) dlr.dehttps://orcid.org/0000-0001-8829-7600
Dähne, Saschasascha.daehne (at) dlr.dehttps://orcid.org/0000-0003-3497-3225
Heinrich, LarsLars.Heinrich (at) dlr.dehttps://orcid.org/0000-0003-4796-5021
Reimer, Larslars.reimer (at) dlr.deUNSPECIFIED
Date:10 October 2017
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:8
DOI :10.1007/s13272-017-0266-z
Page Range:pp. 672-690
Publisher:Springer
ISSN:1869-5582
Status:Published
Keywords: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)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Institute for Aerodynamics and Flow Technology > CASE, BS
Deposited By: Wunderlich, Dr.-Ing. Tobias
Deposited On:05 Dec 2017 14:48
Last Modified:06 Sep 2019 15:24

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