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Multidisciplinary Optimization of a NLF Forward Swept Wing in combination with Aeroelastic Tailoring using CFRP

Wunderlich, Tobias and Dähne, Sascha and Heinrich, Lars and Reimer, Lars (2015) Multidisciplinary Optimization of a NLF Forward Swept Wing in combination with Aeroelastic Tailoring using CFRP. Deutscher Luft- und Raumfahrtkongress 2015, 22.-24. Sept. 2015, Rostock, Deutschland.

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Official URL: http://publikationen.dglr.de/?tx_dglrpublications_pi1[document_id]=370316


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 a 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 shape adaptation based on sectional pressure distribution optimization and inverse design follows for the design point. Thereby, the objective function of the sectional pressure distribution optimization is the minimization of drag to find the best trade-off between profile drag considering NLF and transonic wave drag. First optimization results of the multidisciplinary process chain are presented for a forward swept wing aircraft configuration. At this stage, airfoil shape optimization has not been included yet. Instead, natural laminar flow is considered by prescribing laminar-turbulent transition locations.

Item URL in elib:https://elib.dlr.de/99643/
Document Type:Conference or Workshop Item (Speech)
Title:Multidisciplinary Optimization of a NLF Forward Swept Wing in combination with Aeroelastic Tailoring using CFRP
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wunderlich, Tobiastobias.wunderlich (at) dlr.deUNSPECIFIED
Dähne, Saschasascha.daehne (at) dlr.deUNSPECIFIED
Heinrich, Larslars.heinrich (at) dlr.deUNSPECIFIED
Reimer, Larslars.reimer (at) dlr.deUNSPECIFIED
Date:6 November 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:multidisciplinary optimization (MDO), forward swept wing (FSW), natural laminar flow (NLF), aeroelastic tailoring,
Event Title:Deutscher Luft- und Raumfahrtkongress 2015
Event Location:Rostock, Deutschland
Event Type:national Conference
Event Dates:22.-24. Sept. 2015
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 of Aerodynamics and Flow Technology
Institute of Composite Structures and Adaptive Systems
Deposited By: Wunderlich, Dr.-Ing. Tobias
Deposited On:19 Nov 2015 10:16
Last Modified:26 Jul 2017 13:57

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