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Derivation of Aeroelastic Sensitivities and Their Verification for 2-DoF Airfoil in Incompressible Flow

Kaiser, Christoph and Quero-Martin, David (2021) Derivation of Aeroelastic Sensitivities and Their Verification for 2-DoF Airfoil in Incompressible Flow. Other. DLR-Interner Bericht. DLR-IB-AE-GO-2020-236, 46 S.

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Abstract

This report derives the equations for the stability sensitivities of aeroelastic models with regard to design parameters. The equations are verified for a 2-DoF airfoil model in incompressible flow. For that purpose, the derived equations are applied to Theodorsens aerodynamic theory which includes the derivatives of the unsteady aerodynamic forces as well as the derivative of Theodorsen's function. Moreover, the aeroelastic sensitivities are derived in modal coordinates which renders them applicable to state-of-the-art aeroelastic wing and aircraft models. The verification of the modal and aeroelastic sensitivities also includes the comparison to numerically obtained finite difference approximations.

Item URL in elib:https://elib.dlr.de/141294/
Document Type:Monograph (DLR-Interner Bericht, Other)
Title:Derivation of Aeroelastic Sensitivities and Their Verification for 2-DoF Airfoil in Incompressible Flow
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kaiser, ChristophChristoph.Kaiser (at) dlr.dehttps://orcid.org/0000-0001-9156-8352
Quero-Martin, DavidDavid.QueroMartin (at) dlr.deUNSPECIFIED
Date:1 February 2021
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:46
Status:Published
Keywords:aeroelastic, flutter, sensitivities, Theodorsen, derivative
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Aircraft and  Validation
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Simulation
Deposited By: Kaiser, Christoph
Deposited On:26 Aug 2021 15:36
Last Modified:26 Aug 2021 15:36

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