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A FULLY AUTOMATED CAD-BASED FRAMEWORK FOR SHAPE OPTIMIZATION

Hatanaka, Keita and Brezillon, Joel and Ronzheimer, Arno (2012) A FULLY AUTOMATED CAD-BASED FRAMEWORK FOR SHAPE OPTIMIZATION. 28TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES, September 23rd to 28th, 2012, Brisbane, Australia.

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Abstract

In the area of aircraft design, many studies about Multi Disciplinary Optimization (MDO) and Multi Objective Optimization (MOO) have been published in the last decade. However, there are some concerns that prevent the use of many developed optimization tools in a real aircraft design process. These issues are simply a lack of functionalities of treating surface/surface intersections and geometrical constraints, and difficulties of applying design knowledge to the real aircraft design that are the fundamental features for MDO and MOO. In this study, a new shape parameterization framework is proposed to overcome these issues by establishing a geometry parameterization method based on a NURBS formulation that is used in nearly any state of the art CAD software, and utilizing the Free Form Deformation technique to deform the aircraft shapes arbitrary with a moderate number of design variables. With the developed shape parameterization based on NURBS in combination with a newly developed surface grid deformation approach, optimizations have been carried out for the DLR-F6 wing/body/nacelle/pylon/configuration. A significant drag minimization has been achieved in cases with and without geometrical constraints. It is demonstrated that this approach will be an essential design tool in practical aircraft design.

Item URL in elib:https://elib.dlr.de/79146/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:A FULLY AUTOMATED CAD-BASED FRAMEWORK FOR SHAPE OPTIMIZATION
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hatanaka, KeitaMitsubishi Aircraft CorporationUNSPECIFIED
Brezillon, JoelJoel.Brezillon (at) dlr.deUNSPECIFIED
Ronzheimer, Arnoarno.ronzheimer (at) dlr.deUNSPECIFIED
Date:September 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Optimization, NURBS, CAD, MDO
Event Title:28TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES
Event Location:Brisbane, Australia
Event Type:international Conference
Event Dates:September 23rd to 28th, 2012
Organizer:International Council of the Aeronautical Sciences
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: Brezillon, Joel
Deposited On:11 Dec 2012 15:28
Last Modified:11 Dec 2012 15:28

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