Sealing mechanism for plane wing surfaces

Abstract

Disclosed is a sealing mechanism for plane wing surfaces, which comprises an upper sealing mechanism and a lower sealing mechanism which are mutually independent. The sealing mechanism comprises a rear sealing strip, sliding rails, pulleys, a pulley support arm, a middle sealing strip, a hinge and a front sealing strip. The sealing mechanism is assembled together with a wing and a flap in a rivet mode and capable of moving with flap deflection, so that a gap between the swing and the flap is effectively sealed, and sealing effect can be kept all along in the process of flap deflection. A jump between tail ends of the sealing strips and the swing is small, and movable sealing strips and the flap are connected in a hinge mode, so that the gap around the hinge and the jump are small, and aerodynamic performance of a swing surface and stealth performance of a plane are ensured. When the swing is folded, external surface contours of sealing strips are matched with the swing contour, so that optimal aerodynamic performance is guaranteed. When the wing is unfolded, smooth transition is achieved from the swing to the flap without sharp bevels, and air flow separation in high incidences is delayed, so that aerodynamic performance of the plane is ensured. The sealing mechanism is simple in structure and long in service life.

Description

technical field [0001] The invention relates to the field of aircraft wing design, in particular to a sealing mechanism for the surface of an aircraft wing. Background technique [0002] In order to improve the flight performance of the aircraft, some modern aircraft currently use simple leading edge maneuvering flaps on the leading edge of the wing. During the flight of the aircraft, the lowered position of the flaps is automatically adjusted by the rotary actuator according to the flight speed and angle of attack. The rotary actuators are respectively connected to the wings and the flaps through the lugs. However, when the flaps are deflected downward, a large gap will be produced between the flaps and the main wing surface, and this gap will have an adverse effect on the stealth performance and aerodynamic performance of the aircraft. [0003] At present, some aircraft adopt a sealing strip fixed to the flap on the upper wing surface and the lower wing surface respectiv...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the poor sealing of the fixed structure sealing strip, the short service life of the sealing strip, the large step difference between the end of the sealing strip and the wing, the poor sealing of the existing sealing mechanism at its hinge, the difficulty in using the spring, and the damage to the theoretical shape of the airfoil Shortcomings, the present invention proposes a sealing mechanism for aircraft wing surface

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