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/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | On an Innovative Approach to account for Gust Aerodynamic Nonlinearities | ||||||||||||
Authors: |
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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 (old) | ||||||||||||
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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