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Aerofoil ground effectrevisited

Published online by Cambridge University Press:  04 July 2016

C. Coulliette and
A. Plotkin
C. Coulliette
Affiliation:
Department of Aerospace Engineering and Engineering MechanicsSan Diego State UniversityCalifornia, USA
A. Plotkin
Affiliation:
Department of Aerospace Engineering and Engineering MechanicsSan Diego State UniversityCalifornia, USA
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Abstract

Steady state aerofoil ground effect is studied bothnumerically and analytically. Discrete vortex andlinear vortex panel methods are applied to aparabolic arc and symmetric Joukowski aerofoil,respectively. A single vortex model for the flowover the parabolic arc aerofoil is developed. Thesingle vortex model and other analytical solutions,valid either near or far from the ground, arecompared with the numerical results. The numericalresults are used to delineate the influences ofangle of attack, camber and thickness. For smallvalues of camber and angle of attack, normalisedlift is enhanced near the ground and reduced farfrom it. For a fixed distance above the ground,normalised lift decreases with increasing angle ofattack and camber. Thickness reduces lift at allheights above the ground.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 100 , Issue 992 , February 1996, pp. 65 - 74
Copyright
Copyright © Royal Aeronautical Society 1996 

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