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Wave-absorbing honeycomb structure

A honeycomb structure and honeycomb core technology, applied in the fields of mechanical engineering, construction engineering, transportation vehicles, and aerospace, can solve the problems that low-frequency electromagnetic waves are difficult to achieve satisfactory results and the ability to absorb waves is not strong.

Active Publication Date: 2020-04-07
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ability to absorb waves is not strong, especially for low-frequency electromagnetic waves, it is often difficult to achieve satisfactory results

Method used

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention is further described:

[0020] The noise-absorbing honeycomb structure prepared by the invention can be used in the wave-absorbing functional structure of stealth aircraft.

[0021] like figure 1 As shown, a wave-absorbing honeycomb structure is composed of a plurality of unit cells, and the fibers are distributed on the inner hexagonal surface of the honeycomb core of each unit cell, and the frequency is divided according to the frequency of absorbing electromagnetic waves. The range requires tuning of fiber material, impregnated functional material, fiber diameter, distribution density and distribution pattern to form different resonant cavities. The wave-absorbing honeycomb structure and the panel together form a honeycomb sandwich structure as a product with wave-absorbing function.

[0022] like figure 2 As shown, each unit cell of the wave-absorbing honeycomb structure is a complete hexagona...

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Abstract

The invention belongs to the technical field of aerospace, transportation carriers, constructional engineering and mechanical engineering, and relates to a wave-absorbing honeycomb structure. Cotton,chemical or macromolecule or metal fibers soaked with functional resin are distributed on the internal hexagonal surface of a honeycomb core, and different resonant cavities are formed by adjusting fiber materials, infiltrated functional materials, fiber diameters, fiber distribution density and distribution patterns. Under the action of the formed resonant cavities and the fibers, resonance and loss of sound waves can be formed in the honeycomb structure, and then the purpose of wave absorption is achieved.

Description

technical field [0001] The invention belongs to the technical fields of aerospace, transportation vehicles, construction engineering and mechanical engineering, and relates to a wave-absorbing honeycomb structure. Background technique [0002] At present, the absorbing stealth structure adopts many honeycomb forms, and basically adopts the panel, the honeycomb material itself to select the absorbing material or the multi-layer honeycomb structure. A certain absorbing effect can be achieved. However, the ability to absorb waves is not strong, especially for low-frequency electromagnetic waves, it is often difficult to achieve satisfactory results. SUMMARY OF THE INVENTION [0003] Purpose of the present invention: The present invention is to provide a kind of fiber array formed inside the honeycomb core material, different resonant cavities formed and the effect of the fiber itself, which can make the electromagnetic wave form resonance and loss in it, so as to achieve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/002H01Q17/008
Inventor 贾欲明吴斌王运峰
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA