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The new airfoil model NACA0015, modal analysis and flutter properties
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SYSNO ASEP 0475178 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The new airfoil model NACA0015, modal analysis and flutter properties Author(s) Kozánek, Jan (UT-L) RID
Vlček, Václav (UT-L) RID
Zolotarev, Igor (UT-L) RIDSource Title Applied Mathematical Modelling. - : Elsevier - ISSN 0307-904X
Roč. 46, June (2017), s. 698-706Number of pages 9 s. Publication form Print - P Language eng - English Country US - United States Keywords aeroelasticity ; subsonic flow ; self-excited vibration ; modal analysis ; kinematics Subject RIV BI - Acoustics OECD category Applied mechanics Institutional support UT-L - RVO:61388998 UT WOS 000403742000047 EID SCOPUS 85019985957 DOI 10.1016/j.apm.2017.023.039 Annotation The experimental airfoil model NACA0015 was used to study aeroelastic phenomena during self-excited profile vibration. It provides data for control of aeroelastic calculation programs at subsonic speeds of the stream. The model movability is two-dimensional with two-degree of freedom dynamic system, one in pitch and the second in plunge, and is proposed to be a dynamic system having two near corresponding eigenfrequencies. To quantitatively evaluate flow field using interferometry, a special test section design and profile was constructed. It utilized a large visual field for the optical system together with the option of changing support stiffness for both degrees of freedom. In this paper experimental results from the range of Reynolds numbers Re = (2.63–2.83) 10^5 are published. The identified eigenvalues and eigenmodes for zero flow velocity are compared with measured flutter properties (frequency, modes and time evolutions) of the airfoil.
Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2018 Electronic address http://www.sciencedirect.com/science/article/pii/S0307904X1730135X
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