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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. doi: 10.1007/978-3-319-27279-5_39. ISBN 978-3-319-27278-8 (Print), 978-3-319-27279-5 (Online). ISSN 1612-2909.
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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/ | ||||||||||||||||||
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| Document Type: | Contribution to a Collection | ||||||||||||||||||
| Title: | Flutter Prediction of a Laminar Airfoil Using a Doublet Lattice Method Corrected by Experimental Data | ||||||||||||||||||
| Authors: |
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| 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: |
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| 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 (old) | ||||||||||||||||||
| Location: | Göttingen | ||||||||||||||||||
| Institutes and Institutions: | Institute of Aeroelasticity > Aeroelastic Experiments | ||||||||||||||||||
| Deposited By: | Hebler, Anne | ||||||||||||||||||
| Deposited On: | 28 Nov 2016 15:48 | ||||||||||||||||||
| Last Modified: | 28 Mar 2023 23:46 |
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