Lower aerofoil sealing structure on flexible trailing edge of aircraft

Abstract

The invention, which belongs to the field of aircraft mechanism appearances with continuous sealing of flexible seam channels, particularly relates to a lower aerofoil sealing structure on a flexibletrailing edge of an aircraft. The lower aerofoil sealing structure comprises a flap, a rocker arm, a support arm, a connecting plate, a wing beam, a spring, and a flexible member. The flap deflects under combination of the rocker arm and the support arm; the flexible member is fixedly installed at the connecting plate; and the connecting plate is connected to the lower end of the wing beam by means of hinging and is connected to the upper end of the wing beam by the spring. On the basis of the sealing mode, continuous sealing of the appearance of the wing is realized and the sealing structureis particularly suitable for the sealing of flap seam channels. Because of the sealing structure, the effects of the simpleness and high efficiency are realized. The structure is easy to assemble. Compared with a complicated mechanism, the sealing structure has advantages of low cost and high reliability.

Description

technical field [0001] The invention belongs to the field of aircraft mechanism shapes, where flexibility and seams need to be continuously sealed, and in particular relates to a sealing structure for the lower wing surface of an aircraft flexible trailing edge. Background technique [0002] During the flight of the aircraft, it is necessary to adjust the attitude of the wing surface to meet the flight performance requirements, so the gap between adjacent components will change. The flap uses the characteristics of the slot airflow to realize the function of the trailing edge increase device, and the new The research program shows that the existence of seams will cause eddy currents at the hinge position, causing energy loss, and maintaining a continuous and sealed shape during takeoff and landing will help improve lift and lift-to-drag ratio. [0003] However, for flap slots with complex variations and large gap values, existing solutions need to be further optimized in ter...

AI Technical Summary

Problems solved by technology

[0003] However, for the complex variation of the flap slot and the large change in the gap value, the existing solutions need to be further optimized in terms of complexity, operational difficulty, and cost.

[0004] A flexible wing flutter model with variable trailing edge CN20160323028.8 and variable camber trailing edge tip of the wing CN201210528899.5 are both in the form of hinges, the internal hinge transmission is adopted, and the rear of the wing is realized through the movement of the connecting rod. The deformation of the edge or wing tip, this structure has many conductive links, the use and maintenance are more complicated, and the reliability is reduced to a certain extent. In addition, the manufacturing cost of the sub-ah is also relatively high.

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