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On an Innovative Approach to account for Gust Aerodynamic Nonlinearities

Quero, David and Jenaro, Guillermo and Krüger, Wolf (2015) On an Innovative Approach to account for Gust Aerodynamic Nonlinearities. 53rd AIAA Aerospace Sciences Meeting, AIAA Science and Technology Forum 2015, 5.-9- Jan. 2015, Kissimmee, Florida, USA.

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Abstract

This paper presents a novel approach to computing aircraft total loads generated by a gust encounter. Nonlinear aerodynamic effects, especially relevant in transonic regime, are accounted for. The use of panel-method aerodynamics including some steady corrections is common practice in the industry. The proposed Reduced Order Model (ROM) includes CFD predicted nonlinear unsteady aerodynamic effects by correcting the Aerodynamic Influence Coefficient (AIC) matrix in a certain reduced frequency range. In a linear gust aerodynamic region only one CFD computation is needed to generate the ROM. In a nonlinear region the aircraft motion is considered together with the gust in order to account for the aerodynamic nonlinearities by using one CFD computation for the specific gust. The methodology is described and applied to a relevant transonic case.

Item URL in elib:https://elib.dlr.de/99006/
Document Type:Conference or Workshop Item (Speech)
Title:On an Innovative Approach to account for Gust Aerodynamic Nonlinearities
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Quero, Daviddavid.queromartin (at) dlr.deUNSPECIFIED
Jenaro, GuillermoUNSPECIFIEDUNSPECIFIED
Krüger, WolfUNSPECIFIEDUNSPECIFIED
Date:January 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:ROM, AIC correction, gust encounter, dynamic loads
Event Title:53rd AIAA Aerospace Sciences Meeting, AIAA Science and Technology Forum 2015
Event Location:Kissimmee, Florida, USA
Event Type:international Conference
Event Dates:5.-9- Jan. 2015
Organizer:AIAA
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: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Quero-Martin, David
Deposited On:09 Nov 2015 14:29
Last Modified:10 May 2016 23:33

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