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Flutter Prediction of a Laminar Airfoil Using a Doublet Lattice Method Corrected by Experimental Data

Hebler, Anne and Thormann, Reik (2016) Flutter Prediction of a Laminar Airfoil Using a Doublet Lattice Method Corrected by Experimental Data. In: New Results in Numerical and Experimental Fluid Mechanics X Notes on Numerical Fluid Mechanics and Multidisciplinary Design, X (132). Springer International Publishing Switzerland 2016. pp. 445-455. ISBN 978-3-319-27278-8 (Print), 978-3-319-27279-5 (Online). ISSN 1612-2909

Full text not available from this repository.

Official URL: http://link.springer.com/chapter/10.1007/978-3-319-27279-5_39

Abstract

In this paper a stability analysis of a laminar airfoil is presented and compared to turbulent flow conditions. The flutter system with the two degrees-of-freedom heave and pitch is introduced. The aerodynamic derivatives due to a pitch motion are identified experimentally and two Doublet Lattice correction methods are used to determine the aerodynamic derivatives due to a heave motion. The correction is applied to the local pressure distributions and includes nonlinearities due to transonic flow as well as transitional effects. The resulting aerodynamic derivatives reflect the differences between laminar and turbulent flow as measured in the experiment. An influence of the mean angle-of-attack on the stability boundary is shown for free transition. A comparison of the flutter boundaries for free and fixed transition exhibits a lower transonic dip for free transition. One-degree-of-freedom flutter is found only for free transition.

Item URL in elib:https://elib.dlr.de/107249/
Document Type:Contribution to a Collection
Title:Flutter Prediction of a Laminar Airfoil Using a Doublet Lattice Method Corrected by Experimental Data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hebler, Anneanne.hebler (at) dlr.deUNSPECIFIED
Thormann, Reikreik.thormann (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics X
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:X
DOI :10.1007/978-3-319-27279-5_39
Page Range:pp. 445-455
Editors:
EditorsEmail
Dillmann, AndreasUNSPECIFIED
Heller, GerdUNSPECIFIED
Krämer, EwaldUNSPECIFIED
Wagner, ClausUNSPECIFIED
Breitsamer, ChristianUNSPECIFIED
Publisher:Springer International Publishing Switzerland 2016
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-319-27278-8 (Print), 978-3-319-27279-5 (Online)
Status:Published
Keywords:Flattervorhersage, Laminarprofil, DLM, Experimentelle Daten
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 - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Hebler, Anne
Deposited On:28 Nov 2016 15:48
Last Modified:10 Jan 2018 15:03

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