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Showing 1 to 11 of 11 for “"Airfoil Performance"”.
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Ice-Induced Unsteady Flowfield Effects on Airfoil Performance
Vortex structures observed in the shear layer were presumed to be the cause of large-scale pressure fluctuations upstream of reattachment at small angles of attack. Pressure spectra near reattachment exhibited wide bandwidth frequency peaks that indicated a non-periodic phenomenon and corresponded …
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Shift - flap : Shear-layer instabilities and flow transition – A fundamental link to airfoil performance
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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The effects of trailing edge bluntness on airfoil performance as calculated approximately by a viscid-inviscid vortex panel method
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Experimental wind tunnel study of airfoils with large flap deflections at low Reynolds numbers
… were taken at low Reynolds numbers for four airfoils with trailing edge plain flaps in an attempt to understand the effects of Reynolds number, percent thickness (t/c), percent chord of flap (flap-chord ratio), and flap deflection on airfoil performance. The four airfoils used in this …
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Transition Detection for Low Speed Wind Tunnel Testing Using Infrared Thermography
… because it is an excellent indicator of an airfoil performance. It is difficult to estimate transition through numerical techniques because of the complex nature of viscous flow. Therefore experimental techniques can be essential. Over the transition region the rate of heat transfer shows …
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The effect of free stream disturbances and control surface deflections on the performance of the Wortmann airfoil at low Reynolds numbers
A wing with a Wortmann FX-63-137-ESM airfoil section has been used to study some unique problems encountered in wing aerodynamics in the range of Reynolds numbers between 50,000 and 500,000. The wind-tunnel testing conducted in the 6'x 6' Stability tunnel included strain-gauge data, pressure data, …
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Drag reduction using riblet film applied to airfoils for wind turbines
… the drag reduction properties of riblet film on airfoils specifically designed for wind turbine applications. The S809 and DU 96-W-180 airfoils were tested with four different symmetrical V-shaped riblet sizes (44, 62, 100 and 150 μm) at three Reynolds numbers (1, 1.5 and 1.85 million) and at …
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Open-loop and closed-loop trailing-edge separation control on a natural laminar flow airfoil
… performed on a Natural Laminar Flow, NLF 0414 airfoil at Re = 1.0 × 10(6) in a 3-ft × 4-ft low-speed, low-turbulence wind tunnel. The NLF 0414 was designed with a region of favorable pressure gradient extending almost 70% of the chord on the upper surface of the airfoil. Aggressive pressure …
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Experimental Study of Full-Scale Iced -Airfoil Aerodynamic Performance Using Sub-Scale Simulations
… based on knowledge of the detailed iced-airfoil flowfield that allows the accurate measurement of aerodynamic penalties associated with the accretion of ice on an airfoil and to validate this methodology using full-scale iced-airfoil performance data obtained at near-flight Reynolds …
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Experimental study of full-scale iced-airfoil aerodynamic performance using sub-scale simulations
… based on knowledge of the detailed iced-airfoil flowfield that allows the accurate measurement of aerodynamic penalties associated with the accretion of ice on an airfoil and to validate this methodology using full-scale iced-airfoil performance data obtained at near-flight Reynolds …
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Fluid-structure Interaction and Multidisciplinary Design Analysis Optimization of Composite Wind Turbine Blade
… blade to optimize its aerodynamic and structural performance by developing a fluid-structural interaction (FSI) system. The objectives are to maximize aerodynamic efficiency and structural robustness while reducing blade mass and total cost. In the previous research, a MDO process of a composite …