Advanced trailing edge control surface on the wing of an aircraft

摘要

An aircraft wing trailing edge control surface including a trailing edge flap adjustable to different positions, a sealing flap on the upper side between the wing and the flap, and a ventilation flap on the underside between the wing and the flap. The flap is adjustable downward through positive positions and upward through negative positions. The wing profile is closed on the upper side by the sealing flap and the underside by the ventilation flap when the flap is used as a control flap and adjusted between negative and low positive positions. The ventilation flap releases air flow from the wing underside to the upper side of the flap and the sealing flap is retracted to release an outflow of air from the upper side of the flap when the flap is used for increasing lift and the flap is adjusted between low and high positive positions.