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A wave-absorbing honeycomb structure

A technology of honeycomb structure and honeycomb core, which is applied to antennas, electrical components, etc., 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: 2021-07-16
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A wave-absorbing honeycomb structure
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  • A wave-absorbing honeycomb structure

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Embodiment Construction

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

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

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

[0022] Such as figure 2 As shown, each unit cell of the absorbing honeycomb str...

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Abstract

The invention belongs to the technical fields of aerospace, transportation vehicles, construction engineering and mechanical engineering, and relates to a wave-absorbing honeycomb structure. The present invention distributes cotton, chemical or polymer or metal fibers impregnated with functional resins on the inner hexagonal surface of the honeycomb core, and forms different resonators. Using the function of forming a resonant cavity and the fiber itself, the sound wave can form resonance and loss in the honeycomb structure, so as to achieve the purpose of absorbing the wave.

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 wave-absorbing stealth structure adopts more honeycomb forms, and basically adopts panels and honeycomb materials themselves to select wave-absorbing materials or adopt multi-layer honeycomb structures. Can achieve a certain absorbing effect. However, the ability to absorb waves is not strong, especially for low-frequency electromagnetic waves, it is often difficult to achieve satisfactory results. Contents of the invention [0003] Purpose of the present invention: The present invention is to provide a fiber array formed inside the honeycomb core material to form different resonant cavities and the functions of the fibers themselves, which can cause electromagnetic waves to form resonance and loss in them, thereby a...

Claims

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Application Information

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Patent Type & Authority Patents(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