| 摘要 |
An aircraft comprises a wing ( 2 ) defining an aerofoil surface, the wing ( 2 ) comprising a drooped leading edge flap ( 1 ) being moveable between a stowed position and a deployed position. The wing ( 2 ) is so arranged that during flight when the high-lift device is in the deployed position, air may flow through an opening ( 7 ) in the wing ( 2 ) and over the aerofoil surface. During flight, air preferably flows into the boundary layer ( 13 ) on the upper surface of the wing ( 2 ). This energises the boundary layer ( 13 ), aft of the trailing edge of the drooped leading edge flap increasing its stability allowing the maximum achievable lift coefficient to be increased and hence reducing aircraft take-off and approach speeds.
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