A high-load-bearing airfoil joint load-carrying structure

Abstract

The invention discloses a high-load-bearing airfoil joint load transmission structure, which belongs to the application field of carbon fiber composite materials, and comprises a metal joint and a composite material girder; The connecting surface of the girder contains grooves; the composite girder includes several sandwich structural beams and several elongated composite material walls adjoining side by side, any composite material wall is located between the two sandwich structural beams, and one end of the sandwich structural beam A metal sheet along the length of the sandwich structure beam is embedded in the part; the same end of the sandwich structure beam, the metal sheet and the composite material wall all contain a raised structure, and these raised structures together form a groove suitable for the metal structure. A boss, through which the composite material beam is inserted into the groove of the metal joint to realize the connection with the metal joint. The invention can realize the effective transmission of the airfoil load of the aircraft to the metal joint structure, and avoid the early failure of the airfoil structure and the loss of bearing capacity.

Description

technical field [0001] The invention belongs to the application field of carbon fiber composite materials, and particularly relates to a high-load-bearing airfoil joint load-transmitting structure. Background technique [0002] The carbon fiber composite airfoil structure can meet the requirements of lightweight structure on the basis of achieving the flight lift requirements of the aircraft. In the composite airfoil structure, the connection form of the composite airfoil structure and the metal joint is an important factor restricting the ultimate bearing capacity of the airfoil. [0003] The traditional design of airfoil joints mostly adopts the direct connection between the composite beam structure and the metal joints. There is no effective force transmission path between the two, so that when the airfoil structure is subjected to aerodynamic loads, the connection interface between the two firstly fails structurally. As a result, the overall airfoil structure cannot con...

AI Technical Summary

Problems solved by technology

[0003] The traditional airfoil joint design mostly adopts the way of direct connection between the composite material girder structure and the metal joint. There is no effective force transmission path between the two, so that when the airfoil structure is subjected to aerodynamic load, the connection interface between the two will first experience structural failure. As a result, the overall airfoil structure cannot continue to bear the load in a relatively complete structural state

[0004] Therefore, how to solve the problem of premature failure of the airfoil structure and loss of bearing capacity due to the inability to realize the effective transfer of the airfoil load to the metal joint structure in the traditional metal joint and airfoil structure design is a problem that the relevant industry needs to research and develop urgently where the

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