Aerodynamic noise reducing structure for aircraft wing slats

Details Aerodynamic noise reducing structure for aircraft wing slats Aerodynamic noise reducing structure for aircraft wing slats

B - Operations, Transporting

64

C

B64C 9/24 (2006.01) B64C 1/40 (2006.01) B64C 3/46 (2006.01) B64C 23/00 (2006.01) B64D 15/04 (2006.01)

Patent

CA 2344612

A hollow expandable and contractible displacement element is secured onto the concave rear surface of a slat facing the leading edge of an aircraft wing. A bleed air line supplies engine bleed air into the hollow displacement element to selectively expand or contract the displacement element, which is preferably elastically expandable. When the slat is extended, the displacement element is expanded to fill-out the concave cavity on the rear surface of the slat so as to prevent formation of a vortex in the slat air gap and thereby to reduce aero-acoustic noise. When the slat is retracted, the displacement element is contracted to be conformingly accommodated in the sickle-shaped space between the slat and the leading edge of the wing.

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