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A Reduced Order Model for Dynamic Loads Prediction including Aerodynamic Nonlinearities

Quero, David and Krüger, Wolf and Jenaro, Guillermo (2015) A Reduced Order Model for Dynamic Loads Prediction including Aerodynamic Nonlinearities. International Forum on Aeroelasticity and Structural Dynamics (IFASD-2015), 28. Juni - 02. Juli 2015, Sankt Petersburg, Russland.

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Abstract

In this paper a novel frequency domain Reduced Order Model (ROM) to compute the dynamic response to atmospheric disturbances of a free aircraft flying in the transonic regime including CFD aerodynamics is presented. It is based on correction of the unsteady Aerodynamic Influence Coefficient (AIC) matrices. First, the ROM is applied within the aerodynamic linear region where effects can be superposed using a minimum number of unsteady CFD computations and validated against results obtained by direct coupled CFD-CSM simulation. Additionally, the ROM is extended into a nonlinear region linearizing around a dynamic state instead of the usual steady state linearization. Again, results are validated against direct coupled nonlinear time domain simulations.

Item URL in elib:https://elib.dlr.de/99145/
Document Type:Conference or Workshop Item (Speech)
Title:A Reduced Order Model for Dynamic Loads Prediction including Aerodynamic Nonlinearities
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Quero, DavidDavid.QueroMartin (at) dlr.deUNSPECIFIED
Krüger, WolfUNSPECIFIEDUNSPECIFIED
Jenaro, GuillermoUNSPECIFIEDUNSPECIFIED
Date:July 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:International Forum on Aeroelasticity and Structural Dynamics (IFASD-2015)
Event Location:Sankt Petersburg, Russland
Event Type:international Conference
Event Dates:28. Juni - 02. Juli 2015
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:14 Dec 2015 14:08
Last Modified:10 May 2016 23:33

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