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Blade tip carbon fiber structure

A carbon fiber and carbon fiber cloth technology, which is applied in the field of composite material structure design, can solve the problems of separation of filler and blade body, large centrifugal force, blade damage, etc., and achieves the effect of reducing blade tip strength, processing accuracy and cost.

Pending Publication Date: 2018-05-15
AVIC HUIYANG AVIATION PROPELLER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wind tunnel blades have the characteristics of high-speed operation, and the linear speed of the blade tip can reach more than 250m / s. The centrifugal force during operation is relatively large, which may easily cause the filler to separate from the blade body, resulting in damage to the blade.

Method used

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  • Blade tip carbon fiber structure
  • Blade tip carbon fiber structure
  • Blade tip carbon fiber structure

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the present invention is further described:

[0015] Such as figure 2 , image 3 As shown, a blade tip carbon fiber structure is firstly unloaded by a blanking machine, and the length of the outer carbon fiber cloth 1 increases sequentially from the inside to the outside, forming a ladder shape, see image 3 ; The blanking shape of the blade tip carbon fiber patch 5 is used in conjunction with the stepped shape of the outer carbon fiber cloth 1, see figure 2 ;

[0016] When laying the blade layers, ensure that the outer layer of carbon fiber cloth 1 is wrapped outside the foam 2 in a ladder shape, and fill the outer layer of carbon fiber cloth 1 into steps through the blade tip carbon fiber patch several times in 5 minutes. Pointed carbon fiber wrapping cloth 4 for wrapping, and then docking, the results are shown in image 3 .

[0017] The blade tip carbon fiber wrapping cloth 4 and the outer layer carbon fiber clo...

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Abstract

The invention belongs to the technical field of composite structural design, and relates to a blade tip carbon fiber structure. By changing the existing structure of filling and then wrapping a wholeblade tip, filling the blade tip in different steps and conducting wrapping after filling, it is avoided that blade tip carbon fiber structure is abraded by a blade tip wrapping fabric and the blade tip strength is reduced, the running requirement of blades is ensured, the machining precision of metal pipelines used in cooperation with the blades is reduced, and cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of composite material structure design and relates to a blade tip carbon fiber structure. Background technique [0002] With the strengthening of the country's economic strength, it is striving to develop into high-tech fields such as aviation and aerospace. The development of various aerospace and aerospace vehicles requires a large number of wind tunnel tests. At the same time, compression and heat resistance tests of various materials, automotive Wind tunnel tests are also required for air resistance, heat resistance and compression tests of high-speed trains and ships. Therefore, wind tunnels of low speed, transonic speed, supersonic speed and hypersonic speed have been developed rapidly. So far, my country has owned low speed, high speed, ultra high speed and shock wave, arc and other wind tunnels. In order to adapt to changes in market demand, our company's Products should be adjusted accordingly. [...

Claims

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Application Information

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IPC IPC(8): F04D29/38F04D29/02
CPCF04D29/023F04D29/388
Inventor 闵殿喜李伯瀚寇巧娜
Owner AVIC HUIYANG AVIATION PROPELLER
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