| 摘要 |
A slot forming segment is inserted between two portions of a wing, which are adjacent along a longitudinal axis of wing, into a cove of a carved trailing edge of a leading portion of the adjacent portions and pivotal relatively to both adjacent portions of the wing between which it is inserted. The slot forming segment has such a shape and a position of its axis of rotation that by deflecting it downwardly relatively to the leading portion, it is formed a slot inside the wing's structure of large inlet cross section and high convergence ratio for the control of the boundary layer over an upper surface of the wing behind the slot forming segment for the need of extra lift production. Simultaneously, it is increased both a camber and an aerodynamic surface area of a following portion of the adjacent portions whereby additionally increasing the extra lift production on the wing. A slot changing spoiler is inserted directly in front of and above the slot forming segment and has such a shape of its undersurface and a position of its axis of rotation that a camber of an upper surface of the wing and the convergence ratio of the slot is changed by the simultaneous rotation of the slot changing spoiler and the slot forming segment in the opposite direction whereby increasing the rate of change of lift on the wing for the efficient maneuver of an aircraft at low speeds of flight.
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