METHOD TO CONTROL BOUNDARY LAYER ON AERODYNAMIC SURFACE OF AIRCRAFT Russian patent published in 1994 - IPC

FIELD: aviation. SUBSTANCE: method is based on formation of joining swirls in cells of rear part of the aerodynamic surface by suction of air from cavities of the cells. During suction process speed of air suction is steadily increasing till the instant of full connection of the boundary layer to the surface and formation of swirls in the cells. Then level of suction is decreased till its minimum, that still ensures continuous air flowing around the aerodynamic surface of the aircraft. To get additional decrease of power consumption the air, that is being sucked from the cells, is being formed in entire stream, using gradient of pressure, produced during process of air stream continuous flowing around the aerodynamic surface and sucking air in series from the cells by the stream with the help of ejection, beginning with the cells, that are maximum close to the rear. EFFECT: method is used to control boundary layer on aerodynamic surface of aircraft. 4 cl, 1 dwg