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Aircraft Wing Optimization Using High Fidelity Closely Coupled CFD and CSM Methods

Ronzheimer, Arno and Natterer, Franz Josef and Brezillon, Joël (2010) Aircraft Wing Optimization Using High Fidelity Closely Coupled CFD and CSM Methods. 13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference, Fort Worth, Texas, Fort Worth, Texas.

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The present paper describes a comprehensive MDO process chain to maximize the range of a transonic transport aircraft configuration. The parameterization incorporates wing plan form parameters and twist angles in four wing sections. The geometrical inputs for the disciplines CFD and CSM were generated by CATIA V5 based on those design parameters which were prescribed by a SUBPLEX optimizer. CFD is at first used to calculate the drag in cruise flight with RANS and secondly to provide aerodynamic forces from Euler solutions from certain maneuver cases for a structural sizing of the wing to yield the wing weight. As with the structural calculations the wing deformations are available, these are used to deform the CFD mesh and to evaluate drag and forces on the corresponding flight shapes. The fluid/structural-sizing procedure, which is performed in every optimization cycle, is repeated several times until a sufficient convergence of drag and wing mass is achieved. Both values are then used to compute the Breguet range, which represents the optimization objective. Finally two optimization runs have been conducted. While the first run lead to a consistent result, in the second run, which includes an additional load case, the best configuration was already found in the fifth cycle.

Item URL in elib:https://elib.dlr.de/66679/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Aircraft Wing Optimization Using High Fidelity Closely Coupled CFD and CSM Methods
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ronzheimer, ArnoArno.Ronzheimer (at) dlr.deUNSPECIFIED
Natterer, Franz JosefJosef.Natterer (at) dlr.deUNSPECIFIED
Brezillon, JoëlJoel.Brezillon (at) dlr.deUNSPECIFIED
Date:13 September 2010
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:MDO, CFD-CSM Coupling, CATIA V5, optimization
Event Title:13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference
Event Location:Fort Worth, Texas
Event Type:international Conference
Event Dates:Fort Worth, Texas
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Ronzheimer, Arno
Deposited On:29 Nov 2010 15:07
Last Modified:12 Dec 2013 21:06

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