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Aeroelastic Tailoring of an NLF Forward Swept Wing

Wunderlich, Tobias and Dähne, Sascha (2017) Aeroelastic Tailoring of an NLF Forward Swept Wing. CEAS Aeronautical Journal, 8 (3), pp. 461-479. Springer. DOI: 10.1007/s13272-017-0251-6 ISSN 1869-5582

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Official URL: https://link.springer.com/article/10.1007/s13272-017-0251-6

Abstract

This article introduces the application of a multidisciplinary analysis (MDA) process chain based on high fidelity simulation methods for the aeroelastic tailoring of an natural laminar flow (NLF) forward swept wing. With this approach the interactions between aerodynamics, loads and structural sizing are considered in the wing analysis. The resulting process enables an integrated aerostructural wing design including aeroelastic tailoring using carbon fiber reinforced plastics (CFRP). The main feature of the process chain is the hierarchical decomposition of the Problem into two levels. On the highest level the orthotropy direction of the Composite structure will be analysed. The lower level includes the wing box sizing for essential load cases considering the static aeroelastic deformations. Thereby, the wing box sizing can be performed with a given ply share of the laminate or a ply share optimization. Additionally, the airfoil shapes are transferred from a given NLF wing design. The natural laminar flow is considered by prescribing laminar-turbulent transition locations. The process chain evaluates the wing mass, the lift-to-drag ratio under cruise flight conditions and the corresponding design mission fuel consumption. Results of aerostructural wing design studies and optimizations are presented for an NLF forward swept wing aircraft configuration. The aerostructural wing optimization with 3 orthotropy angles as design parameters shows a wing mass reduction in the order of 8% and a design mission fuel consumption reduction in the order of 4% in comparison to the aeroelastic tailored wing design of the reference aircraft.

Item URL in elib:https://elib.dlr.de/112722/
Document Type:Article
Title:Aeroelastic Tailoring of an NLF Forward Swept Wing
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
Date:September 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/s13272-017-0251-6
Page Range:pp. 461-479
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
Deposited By: Wunderlich, Dr.-Ing. Tobias
Deposited On:15 Nov 2017 14:18
Last Modified:06 Sep 2019 15:24

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