Aircraft wing leading edge high lift device with suction

Details Aircraft wing leading edge high lift device with suction Aircraft wing leading edge high lift device with suction

1999-07-08

2000-10-24

Poon, Peter M.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244208, 244130, 244214, B64C 2106

Patent

active

061353957

ABSTRACT:
An aircraft wing, wing assembly and method of reducing drag are provided. The wing asembly includes a main wing portion (10) and a leading edge high lift portion (12). The high lift portion is movable between a retracted position in which it generally merges with the main wing portion and a deployed position forwardly thereof. At least a substantial part of an upper surface (22) of the high lift portion is air permeable or perforated and in flow communication with a suction passage (30) in it. In flight, suction may be applied to the suction passage to reduce the chordwise extent of the turbulent boundary layer over the upper or lower wing surface.

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Wager et al, "Laminar Flow Control Leading-Edge Systems in Simulated Airline Service", Journal of Aircraft, vol. 27, No. 3, Mar. 1, 1990, pp. 239-244.

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