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Comptes Rendus Physique
Volume 6, n° 4-5
pages 395-398 (mai-juin 2005)
Doi : 10.1016/j.crhy.2005.06.001
Aircraft trailing vortices: an introduction
Tourbillons de sillages dʼavions : une introduction

Laurent Jacquin
ONERA/DAFE, Fundamental and Experimental Aerodynamics Department, 8 rue des Vertugadins, 92190 Meudon, France 


Flow momentum that is deflected in a persistent way by a wing, or by another flow, becomes organised in coherent and energetic vortex structures. This phenomenon is briefly introduced here by comparison with other phenomena such as the production of vortices by impulsive forces (e.g. during animal flight), or the production of turbulence by jets. These considerations aim at underlining the fundamental nature of this strange mechanism, which is usually hidden behind engineering models produced by aerodynamic science. The control of these mechanisms, for applications to the safety of the airplanes for example, opens a vast multidisciplinary field of research. To cite this article: L. Jacquin, C. R. Physique 6 (2005).

The full text of this article is available in PDF format.

On observe que la quantité de mouvement dʼun écoulement défléchi de manière persistante par une aile ou par un autre écoulement sʼorganise en tourbillons énergétiques cohérents. Ce phénomène est ici brièvement introduit par comparaison avec dʼautres phénomènes tels que la production de tourbillons par des forces impulsives, chez les animaux par exemple, ou la production de la turbulence par des jets. Ces considérations visent à souligner la nature fondamentale de ce mécanisme étrange, qui se cache usuellement derrière les modèles dʼingénieurs produits par la science aérodynamique. Sa maîtrise, en vue dʼapplications à la sécurité des avions par exemple, ouvre un vaste champ de recherches multi-disciplinaire. Pour citer cet article : L. Jacquin, C. R. Physique 6 (2005).

The full text of this article is available in PDF format.

Keywords : Aircraft wake vortices, Jets, Turbulence, Lift, Drag, Aerodynamics

Mots-clés : Tourbillons de sillages dʼavions, Jets, Turbulence, Traînée, Portance, Aérodynamique

© 2005  Académie des sciences@@#104156@@
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