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A cooperative approach to multi-level multi-disciplinary aircraft optimization

Ilic, Caslav and Abu-Zurayk, Mohammad and Kruse, Martin and Keye, Stefan and Wunderlich, Tobias and Einarsson, Gunnar and Führer, Tanja and Schuster, Andreas and Scherer, Julian and Liepelt, Rene and Leitner, Martin and Jepsen, Jonas and Ciampa, Pier Davide and Becker, Richard-Gregor and Seider, Doreen and Zur, Sascha Andre and Siggel, Martin and Stollenwerk, Tobias (2016) A cooperative approach to multi-level multi-disciplinary aircraft optimization. European Congress on Computational Methods in Applied Sciences and Engineering, 05-10 Jun 2016, Creta, Greece.

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Abstract

In the usual approach to multi-disciplinary optimization (MDO), a few experts in optimization select and integrate disciplinary tools into a working MDO process, run it on target cases, and analyze the results. This approach is expedient, but it tends to oversimplify employment of disciplines. German Aerospace Center (DLR) is currently pursuing a more cooperative approach, where disciplinary experts from different DLR institutes are involved throughout in the definition, implementation, and evaluation of MDO processes. The goal is to establish a modular MDO platform, with well-balanced fidelity levels of employed disciplines, that can be used both for overall aircraft design, as well as for studying the influence of particular subsystem improvements on the overall design objective. Two MDO processes resulting from this effort so far are presented. The objective in both process is to minimize the mission fuel burn, as evaluated through Breguet range equation. One is a derivative-free process employing multi-level analysis, comprising the conceptual design level for determining the dependent top-level parameters, dynamic level for computing the sizing loads, and detailed level for sizing the structure and computing the performance indicators. The other is a gradient-based process on the detailed level alone, employing a split of design parameters between CAD-based and CAD-free, and treating all structural constraints independently. The set of sizing-relevant load cases is automatically determined based either on the actual configuration (in the derivative-free process) or on the baseline configuration (in the gradient-based process), rather than applying a set of generic load cases. The contribution concludes with several example studies carried out using these processes.

Item URL in elib:https://elib.dlr.de/105791/
Document Type:Conference or Workshop Item (Speech)
Title:A cooperative approach to multi-level multi-disciplinary aircraft optimization
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ilic, CaslavCaslav.Ilic (at) dlr.deUNSPECIFIED
Abu-Zurayk, MohammadMohammed.Abu-Zurayk (at) dlr.deUNSPECIFIED
Kruse, MartinMartin.Kruse (at) dlr.deUNSPECIFIED
Keye, StefanStefan.Keye (at) dlr.deUNSPECIFIED
Wunderlich, Tobiastobias.wunderlich (at) dlr.dehttps://orcid.org/0000-0001-8829-7600
Einarsson, GunnarGunnar.Einarsson (at) dlr.deUNSPECIFIED
Führer, TanjaTanja.Fuehrer (at) dlr.deUNSPECIFIED
Schuster, AndreasAndreas.Schuster (at) dlr.deUNSPECIFIED
Scherer, JulianJulian.Scherer (at) dlr.dehttps://orcid.org/0000-0002-8054-4686
Liepelt, ReneRene.Liepelt (at) dlr.deUNSPECIFIED
Leitner, MartinMartin.Leitner (at) dlr.deUNSPECIFIED
Jepsen, JonasJonas.Jepsen (at) dlr.deUNSPECIFIED
Ciampa, Pier DavidePier.Ciampa (at) dlr.deUNSPECIFIED
Becker, Richard-GregorRichard-Gregor.Becker (at) dlr.deUNSPECIFIED
Seider, DoreenDoreen.Seider (at) dlr.dehttps://orcid.org/0000-0001-9484-8704
Zur, Sascha AndreSascha.Zur (at) dlr.deUNSPECIFIED
Siggel, Martinmartin.siggel (at) dlr.deUNSPECIFIED
Stollenwerk, TobiasTobias.Stollenwerk (at) dlr.deUNSPECIFIED
Date:7 June 2016
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:optimization, aerodynamics, structure, loads, MDO, CFD, CSM, RANS, FEM, DLM, FSD, multi-fidelity, concept, dynamic, detailed
Event Title:European Congress on Computational Methods in Applied Sciences and Engineering
Event Location:Creta, Greece
Event Type:international Conference
Event Dates:05-10 Jun 2016
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 , Göttingen , Hamburg , Köln-Porz , Oberpfaffenhofen , Stuttgart
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Institute of Structures and Design > Structural Integrity
Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Institute of System Dynamics and Control > Aircraft System Dynamics
Air Transport Operations > Integrated Aircraft Design
Institute of Propulsion Technology > Engine
Institut of Simulation and Software Technology
Deposited By: Ilic, Caslav
Deposited On:29 Aug 2016 13:13
Last Modified:31 Jul 2019 20:03

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