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Kite equilibrium and bridle length

Published online by Cambridge University Press:  04 July 2016

K. Alexander  and
J. Stevenson
K. Alexander
Affiliation:
Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
J. Stevenson
Affiliation:
Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
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Abstract

Kite design has recently seen a revival, with sports such as kite buggying and kite surfing becoming significant businesses in some countries. Since the aerodynamics of kites has not been explored in much depth this paper sets out to explain a major behaviour of kites, predicting where they will settle during flight. The analysis is confined to a vertical plane containing the kite string. It examines the basic forces for single-line or two-line kites and shows how the line azimuth angle(s) and equilibrium settling point(s) can be derived from the aerodynamic properties of the kite, from the kite mass and from the bridle lengths. It is noted that while several equilibrium points are predicted not all are stable equilibrium points. Wind tunnel tests with a specially built rigid model are described and these are shown to confirm theoretical predictions.

Type
Research Article
Information
The Aeronautical Journal , Volume 105 , Issue 1051 , September 2001 , pp. 535 - 541
Copyright
Copyright © Royal Aeronautical Society 2001 

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References

1. De Laurier, J.D. A stability analysis of cable-body systems totally immersed in a fluid stream, April 1972, NASA Contractor report NASA Cr-2021, Washington.Google Scholar
2. De Laurier, J.D. A stability analysis for tethered aerodynamically shaped balloons, J Aircr, September 1972, 9, (9), pp 646–651.Google Scholar
3. Hobbs, S.E. A Quantitative Study of Kite Performance in Natural Wind with Application to Kite Anemometry, 1986, PhD thesis, Cranfield Institute of Technology.Google Scholar
4. Hobbs, S.E. Kite measurements in the boundary layer, Wind Engineering, 1989, 13, (2), pp 50–60.Google Scholar
5. Kalikov, V.N., Nekrasov, I.V. and Ordanovich, A.E. Investigation of plane-parallel motion of a kite, Moscow University Mechanics Bulletin (English Translation), 1974, 29, (5-6), pp 11–16.Google Scholar
6. Adomaitis, R.A. Kites and bifurcation theory, SIAM Review, September 1989, 31, (3), pp 478–483.Google Scholar
7. Ito, T. and Komura, H. Kites the Science and the Wonder, 1983, Japan Publications, Tokyo.Google Scholar
8. Pelham, D. The Penguin Book of Kites, 1976, Penguin Books.Google Scholar
9. Abbot, I.H. and Von Doenhoff, A.E. Theory of Wing Sections Including a Summary of Airfoil Data, 1949, McGraw-Hill, New York.Google Scholar
10. Fluid forces on flat plates, September 1970, ESDU International: Engineering Sciences Data Unit 70015.Google Scholar
11. Goela, J.S ET AL Wind loading effects on a catenary, J Wind Eng and Ind Aerodynamics, December 1985, 21, (3), pp 235–249.Google Scholar