File:Aerodynamic coefficients of a symmetrical airfoil in an oscillating flow (IA aerodynamiccoeff1094510801).pdf
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Summary[edit]
Aerodynamic coefficients of a symmetrical airfoil in an oscillating flow
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| Author |
Chamberlain, George A. |
| Title |
Aerodynamic coefficients of a symmetrical airfoil in an oscillating flow |
| Publisher |
Monterey, California: Naval Postgraduate School |
| Description |
A symmetrical airfoil at fixed angle of attack from 0 to 35 degrees was placed in an air flow with controlled velocity oscillations at 10 Hz. The instantaneous pressure distribution and flow velocity were measured simultaneously. Pressure information was integrated numerically to determine instantaneous values for lift, drag and moment about the quarter chord. The results were plotted as three-dimensional surface plots in angle of attack, cycle time and performance coefficient axes, or with chordwise position, cycle time and pressure coefficient axes, as appropriate. The pressure distribution over the airfoil was shown to be primarily a function of freestream static pressure. Aerodynamic coefficients as a function of angle of attack and time exhibited seemingly random, erratic behavior, whereas the mean values of the same coefficients were similar in nature to those obtained in steady flow. The data indicate that the instantaneous performance of an airfoil in an oscillating flow is not merely a continuum of many quasi-steady states. Subjects: Cycles.; Oscillating flow; aerodynamic coefficients; symmetrical airfoil |
| Language | English |
| Publication date | September 1990 |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
| Accession number |
aerodynamiccoeff1094510801 |
| 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. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted. |
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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 | 07:19, 8 July 2020 |  | 1,275 × 1,650, 102 pages (2.79 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection aerodynamiccoeff1094510801 (User talk:Fæ/IA books#Fork8) (batch 1990-1992 #2882) |
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