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Composite material rotary body butt joint

A composite material and butt joint technology, applied in the direction of combustion of the air inlet of the power plant, can solve the problems of large end deformation, difficult dimensional tolerance control, and inability to guarantee the shape tolerance in the docking area, so as to reduce the deformation and rebound. , Guarantee the effect of internal adjective

Inactive Publication Date: 2019-04-02
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, when the general quasi-rotary structure is docked, the butt joint flange is fixed on the end of the quasi-rotary body. However, when the circumferential size of the quasi-rotary structure is large, the end of the composite material quasi-rotary structure body is cured. The problem of large deformation and difficult dimensional tolerance control, the existing technology cannot guarantee the internal tolerance of the docking area, which affects the force status and force transmission characteristics of the docking area of ​​the aircraft intake structure

Method used

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  • Composite material rotary body butt joint
  • Composite material rotary body butt joint

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Embodiment Construction

[0012] Referring to the accompanying drawings, the butt joint of the composite material revolving body of the present application includes a revolving body body 1 and a metal butt flange 2 made of composite materials. Its special innovation is that during the forming process of the revolving body body 1, the The quasi-revolving end of the metal butt joint flange 2 is embedded in the end portion of the revolving body 1 of composite material. This structure is particularly suitable for large-scale composite material-like gyrostructures such as aircraft inlets. In order to increase the bonding strength between the butt flange 2 made of metal material and the quasi-revolver structure made of composite material, it is preferable to provide a plurality of tooth-shaped protrusions 3 on both side walls of the revolving end of the metal butt flange. During the paving process of the quasi-rotary body 1, the inner paving layer 4 of the end of the quasi-rotary body 1 is laid on the inner ...

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Abstract

A composite material rotary body butt joint comprises a rotary body made of a composite material and a metal butt flange. The rotary end of the metal butt flange is embedded in the end socket of the composite material rotary body during the forming process of the rotary body.

Description

technical field [0001] This application belongs to the aircraft design technology, and further relates to the structural design of composite material revolving body parts of aircraft, and further relates to a butt joint structure of composite material revolving bodies. Background technique [0002] Large-scale composite revolving structure (such as the air intake structure of an aircraft, etc.) generally has the characteristics of high internal surface quality requirements, high precision control requirements, and strict balance control, while large-scale composite revolving structures in After curing, there are problems of large deformation and springback, especially the problem of deformation and springback at the end of the structure is more significant. At present, when the general quasi-rotary structure is docked, the butt joint flange is fixed on the end of the quasi-rotary body. However, when the circumferential size of the quasi-rotary structure is large, the end of ...

Claims

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Application Information

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IPC IPC(8): B64D33/02
CPCB64D33/02
Inventor 纪小飞李宁阳可君
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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