Device for delaying boundary layer

Details Device for delaying boundary layer Device for delaying boundary layer

B - Operations, Transporting

64

C

B64C 21/04 (2006.01)

Patent

CA 2667619

The invention relates to a device for delaying the separation of a boundary layer in a flow of air (10) on a wall (12), including holes (14) formed in the wall (12) and connected to compressed air supply valves (18) by means of channels (16), the frequency of the valve opening and closing cycles and the valve opening duration being selected so as to generate peak output velocities from the holes (14), which occur in quasi-continuous succession. The invention is particularly suitable for aircraft wings and motor vehicle bodies.

Dispositif pour retarder le décollement d'une couche limite dans un écoulement d'air (10) sur une paroi (12), comprenant des orifices (14) formés dans la paroi (12) et reliés par des conduits (16) à des vannes (18) d'alimentation en air comprimé, la fréquence des cycles d'ouverture et de fermeture des vannes et la durée d'ouverture des vannes étant choisies pour générer des pics de vitesse en sortie des orifices (14) qui se succèdent de façon quasi-continue. L'invention s'applique notamment aux ailes d'avions et aux carrosseries des véhicules automobiles.

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