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CAD in Aerodynamic Aircraft Design

Ronzheimer, Arno (2017) CAD in Aerodynamic Aircraft Design. Deutscher Luft- und Raumfahrtkongress, 5.-7. Sept. 2017, Müchen, Deutschland.

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Abstract

Computational fluid dynamics (CFD) has become a state of the art analysis tool for nearly all phases of aircraft design. In contrast to CFD, computer aided design (CAD) is traditionally used in later design phases of an aircraft, when the design is almost frozen. However, with the appearance of parametric CAD systems a new design methodology was enabled, which was based on the capability of a parametric CAD system to replay construction sequences with varied design parameters. A parametric wing can be re-used to create a vertical tail plane or parts can be associated to other parts, which allow concurrent engineering practices. In the present study, these capabilities have been exploited to generate extremely variable aircraft CAD models ready for CFD. Furthermore, parametric construction strategies, which have been developed in the past, are applied to model the primary aircraft parts, such as wing, fuselage and nacelle and also secondary parts, such as the belly fairing, wing tips and pylon, with the CAD system CATIA V5. For the construction of curves, which are used to create surface lofts, primarily B-splines are utilized, where the coordinates of the control points can later be used as the design parameters. Finally, the capabilities of parametric CAD are demonstrated through design variations performed for conventional configurations and through design studies with non-conventional aircraft configurations, which are in the focus of current research.

Item URL in elib:https://elib.dlr.de/117320/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Wird als DGLR Netzpublikation veröffentlicht DocumentID 450117
Title:CAD in Aerodynamic Aircraft Design
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ronzheimer, ArnoArno.Ronzheimer (at) dlr.deUNSPECIFIED
Date:2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CAD, CFD
Event Title:Deutscher Luft- und Raumfahrtkongress
Event Location:Müchen, Deutschland
Event Type:national Conference
Event Dates:5.-7. Sept. 2017
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt Lilienthal-Oberth e. V.
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 - VicToria
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Ronzheimer, Arno
Deposited On:18 Dec 2017 14:58
Last Modified:31 Jul 2019 20:14

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