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The Minimum Induced Drag of the Hemi-Circular Ground Effect Wings

Hiroshi Mamada, +1 more
- 01 Jan 1973 - 
- Vol. 21, Iss: 235, pp 447-451
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TLDR
In this paper, the induced drag of a front view wing with both tips in close proximity to the ground surface was considered for a hemicircular front-view wing with the lifting line theory.
Abstract
The induced drag is considered for a hemicircular front view wing with both tips in close proximity to the ground surface, using the lifting line theory. The integral equation is exactly treated and, assuming that the lift distribution is optimum, the exact expression of the span efficiency factor is obtained. Also, the lift distribution is discussed analytically and numerically.

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Journal ArticleDOI

Wing-in-ground effect vehicles

TL;DR: In this article, a survey of the research and development of wing-in-ground effect technology is presented, starting with definitions of the phenomenon and the craft which takes advantage of the ground effect (GE), the history and perspectives of the technology, specific vehicles and projects, and areas of application.
Journal ArticleDOI

Lifting-Line Predictions for Induced Drag and Lift in Ground Effect

TL;DR: In this article, closed-form relations for the induced-drag and lift coefficients acting on a wing in ground effect to those acting on the same wing outside the influence of ground effect are presented.
Journal Article

Numerical investigation of airfoil in ground proximity

TL;DR: In this article, the authors present numerical investigation of the ground effect which affects an air flow when a craft's wing approaches the ground or sea surface. And they propose an empirical formula for quantitative assessment of the chord dominated ground effect.
References
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Journal ArticleDOI

Wing-in-ground effect vehicles

TL;DR: In this article, a survey of the research and development of wing-in-ground effect technology is presented, starting with definitions of the phenomenon and the craft which takes advantage of the ground effect (GE), the history and perspectives of the technology, specific vehicles and projects, and areas of application.
Journal ArticleDOI

Lifting-Line Predictions for Induced Drag and Lift in Ground Effect

TL;DR: In this article, closed-form relations for the induced-drag and lift coefficients acting on a wing in ground effect to those acting on the same wing outside the influence of ground effect are presented.
Journal Article

Numerical investigation of airfoil in ground proximity

TL;DR: In this article, the authors present numerical investigation of the ground effect which affects an air flow when a craft's wing approaches the ground or sea surface. And they propose an empirical formula for quantitative assessment of the chord dominated ground effect.
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