Results 181 to 190 of about 2,745 (210)

Performance Analysis of NACA4412 Airfoil with Gurney Flap

2020
Gurney flap has been used to increase lift in varied types of wings used in aerial vehicles. It is also preferred as it increases pressure on the pressure side of the airfoil thus increasing the lift. Gurney flaps delay the onset of boundary layer separation in fluid flows.
Ankit Kumar, Pooja Chaubdar, Gyan Sagar Sinha, Atal Bihari Harichandan   +3 more
openaire   +1 more source

Pitching Airfoil with Combined Gurney Flap and Unsteady Trailing-Edge Flap Deflection

AIAA Journal, 2012
b = semispan c = airfoil chord Cl = lift coefficient Cm = pitching moment coefficient Cp = surface pressure coefficient f = oscillation frequency h = Gurney flap height td = flap actuation duration ts = flap actuation start time u1 = freestream velocity = angle of attack ds = dynamic-stall angle f = final angle i = initial angle ss = static stall angle
T. Lee, Y. Y. Su
openaire   +1 more source

Effect of Aspect Ratio on Gurney-Flap Performance

Journal of Aircraft, 2013
A low-speed wind-tunnel investigation has been undertaken to establish the effect of wing aspect ratio on Gurney-flap performance. Characterization is accomplished using a force balance and flow visualization. The Gurney-flap lift increment due to a shift in the zero-lift angle of attack was observed to scale with that of the lift-curve slope for ...
Libin Daniel, Lance W. Traub
openaire   +1 more source

Effect of Gurney Flaps on an Elliptical Airfoil

Journal of Fluids Engineering, 2017
A low-speed wind tunnel investigation is presented characterizing the impact of Gurney flaps on an elliptical airfoil. The chordwise attachment location and height of the flaps were varied, as was the Reynolds number. The results showed strong nonlinearities in the lift curve which were present for all tested geometries.
openaire   +1 more source

Flap Vortex Management by Active Gurney Flaps

46th AIAA Aerospace Sciences Meeting and Exhibit, 2008
Vey, S, Paschereit, C. O., Greenblatt, D., Meyer, R.   +3 more
openaire   +3 more sources

Effects of Gurney Flaps on an Annular Wing

Journal of Aircraft, 2009
F OR a constrained wing span, nonplanar wings exhibit significant aerodynamic benefits. These are generally indicated through increased lift curve slopes and reduced drag due to lift. These benefits are accrued through thewing capturing a larger volume of air to generate the lift impulse, and consequently the downwash at a point is reduced [1].
openaire   +1 more source

Gurney Flaps on Slender and Nonslender Delta Wings

Journal of Aircraft, 2010
*† ‡ A parametric low-speed wind tunnel study has been undertaken of the effect of Gurney flaps on the aerodynamic characteristics of slender and non-slender delta wings with sweep angles of 40°, 60° and 70°. In contrast to published data, no fundamental difference in behaviour with sweep angle was found.
openaire   +1 more source

Additional Aerodynamic Features of Wing-Gurney Flap Flows

Journal of Aircraft, 2006
An extension of the existing explanation of the flow mechanisms characteristic of the wing-Gurney flap flow has been proposed. Based on the Helmholtz vortex theory, it has been postulated at the onset of the present study that, in addition to the spanwise vortices, as predicted by a commonly accepted flow hypothesis one or more pairs of streamwise ...
openaire   +1 more source

Aerodynamics of the Gurney flap

14th Applied Aerodynamics Conference, 1996
David Jeffrey, David Hurst
openaire   +1 more source

Effect of geometric parameters of Gurney flap on performance enhancement of straight-bladed vertical axis wind turbine

Renewable Energy, 2021
Wen-xing Hao, Chun Li
exaly