File:A computational investigation of wake-induced airfoil flutter in incompressible flow and active flutter control (IA acomputationalin1094542958).pdf
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Summary[edit]
A computational investigation of wake-induced airfoil flutter in incompressible flow and active flutter control
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| Author |
Turner, Mark A. |
| Title |
A computational investigation of wake-induced airfoil flutter in incompressible flow and active flutter control |
| Publisher |
Monterey, California. Naval Postgraduate School |
| Description |
In this thesis several incompressible oscillatory flow and flutter problems were investigated. A previously developed unsteady panel code for single airfoil bending torsion flutter analysis was compared to Theodorsen's classical theory. The panel code agrees with Theodorsen's bending-torsion flutter analysis for natural frequency ratios (---) less than 1.2. Also, a two airfoil unsteady panel code was modified for one degree of freedom flutter analysis. Code verification was completed by first comparing flat plate theory to the unsteady aerodynamic force and moment coefficients and then using the equation of motion to determine regions of instability. The possibility of active flutter control was investigated by positioning a small control airfoil in front of a neutrally stable reference airfoil. Results show that the flutter boundary may be changed through the placement, oscillation or scaling of a second airfoil upstream. A comparison with pitch damping curves published by Loewy confirms that the code is capable of predicting wake-induced airfoil flutter. Subjects: NA |
| Language | English |
| Publication date | March 1994 |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
| Accession number |
acomputationalin1094542958 |
| Source | |
| Permission (Reusing this file) |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| current | 21:56, 13 July 2020 |  | 1,275 × 1,650, 111 pages (3.82 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection acomputationalin1094542958 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #5257) |
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