Horizontal tail connector of helicopter

Abstract

The invention relates to the field of structural design of horizontal tail connectors of helicopters, in particular to a horizontal tail connector of a helicopter. The horizontal tail connector comprises a framework with an epsilon-shaped section, a first U-shaped wall plate, a second U-shaped wall plate, a third U-shaped wall plate, a fourth U-shaped wall plate, and filling foam, wherein the first U-shaped wall plate and the second U-shaped wall plate are respectively co-cured to the two epsilon-shaped opening end parts of the framework and form a first lug, a second lug and a third lug; thethird U-shaped wall plate is co-cured to the part between two side surfaces of the framework; the fourth U-shaped wall plate is symmetrical to the third U-shaped wall plate; the bottom surface of thefirst U-shaped wall plate, one side surface of the third U-shaped wall plate and one side surface of the fourth U-shaped wall plate, and a cavity of the framework are sealed to form a first sealed cavity and a second sealed cavity; and the first sealed cavity and the second sealed cavity are filled with the filling foam. The horizontal tail connector is designed into a composite material structure, can be singly formed and then is connected with a horizontal tail wing box through mechanical connection or bonding, and can also be co-cured to be formed with the horizontal tail wing box, and hasthe advantages of high designability, high convenience for forming, high in-plane performance and high interlayer strength.

Description

technical field [0001] The invention relates to the structural design field of a helicopter horizontal tail joint, in particular to a helicopter horizontal tail joint. Background technique [0002] With the further requirements of helicopters for structural weight reduction, it is particularly necessary to apply composite materials to the main load-bearing structure of helicopters. At present, the flat tail joints of helicopters are usually made of metal materials, which are not only heavy, but also complicated to assemble with beams and ribs. Composite material joints have the advantages of light weight, high strength, and good designability, and have irreplaceable advantages for replacing the existing flat tail joints. , has gradually become the development trend of flat tail joint design. [0003] However, due to the material properties of composite materials and the poor ability of composite material joints to withstand external forces, the current configuration of comp...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design a helicopter flat tail joint to solve the problem that the existing composite material joint cannot be applied to the actual helicopter flat tail structure

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