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http://dx.doi.org/10.5139/JKSAS.2014.42.4.298

Analysis of the Influence of Ground Effect on the Aerodynamic Performance of a Wing Using Lifting-Line Method  

Lee, Chang Ho (Aerodynamics Team, Korea Aerospace Research Institute)
Kang, Hyung Min (Aerodynamics Team, Korea Aerospace Research Institute)
Kim, Cheolwan (Aerodynamics Team, Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.4, 2014 , pp. 298-304 More about this Journal
Abstract
The lifting-line method based on Weissinger's method is extended to be able to analyze the ground effect. The method is applied to predict the variation of aerodynamic performance due to ground effect for the elliptic wing with aspect ratio of 10 and the wing of human powered aircraft. While the vortex strength of the wing increases slightly, the downwash decreases significantly as the wing approaches to the ground. For the wing of human powered aircraft, the increment of lift at the height of 2m is 5% than the lift outside the influence of ground effect. The decrease of induced drag at the height of wing span is 10% and at the height of 2m is 55% than that out of ground effect.
Keywords
Ground Effect; Lifting-line Theory; Lift; Induced Drag; Potential Flow;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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