Selective-radiation infrared stealth structure

A selective, infrared technology, applied in the field of infrared stealth, can solve problems such as low emission, and achieve the effect of meeting stealth requirements and efficient heat dissipation windows

Inactive Publication Date: 2017-05-31
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of selective emission metamaterials with low emission in the atmospheric window and high emission outside the atmospheric window in infrared stealth technology has not yet been reported in public literature

Method used

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  • Selective-radiation infrared stealth structure
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  • Selective-radiation infrared stealth structure

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Embodiment 1

[0028] combine Figure 1-Figure 3 As shown, Embodiment 1 of the present invention provides a selective radiation infrared stealth structure, including a plurality of infrared selective heat emitting units arranged in a matrix according to a period p.

[0029] Each infrared selective heat emission unit includes a substrate layer, a metal back plate, a dielectric layer and a metal sheet layer arranged in sequence from bottom to top, and the metal sheet layer includes a first metal sheet, a second metal sheet, a third metal sheet and a first metal sheet Four metal sheets, the first metal sheet, the second metal sheet, the third metal sheet and the fourth metal sheet are arranged on the dielectric layer in a 2*2 array, and the first metal sheet, the second metal sheet, and the third metal sheet and the side lengths of the fourth metal sheet are all different.

[0030] Wherein, the substrate layer is made of Si sheet, the thickness of the substrate layer is 0.5mm, the metal backpl...

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Abstract

The invention discloses a selective-radiation infrared stealth structure, and relates to the technical field of infrared stealth. The infrared stealth structure comprises a plurality of infrared selective heat emission units which are arranged and distributed in the form of a matrix according to a period p; each infrared selective heat emission unit comprises a substrate layer, a metal backboard, a dielectric layer and a metal sheet layer which are sequentially arranged from bottom to top; each metal sheet layer comprises a first metal sheet, a second metal sheet, a third metal sheet and a fourth metal sheet; and the first metal sheets, the second metal sheets, the third metal sheets and the fourth metal sheets are arranged on the dielectric layers by spacing by 90 degrees around the centers of the infrared selective heat emission units. The selective-radiation infrared stealth structure disclosed by the invention realizes selective thermal radiation through electromagnetic resonance characteristics of an infrared metamaterial, and realizes an infrared stealth technology through the transmitted spectrum design.

Description

technical field [0001] The invention relates to the technical field of infrared stealth, and more specifically relates to a selective radiation infrared stealth structure. Background technique [0002] Infrared stealth technology is to reduce or change the infrared radiation characteristics of the target, so as to make it difficult for the enemy's infrared detection equipment to detect or reduce its detection ability. The infrared radiation energy of an object is characterized by Stefan Boltzmann's law, W=εσT 4 , where W is the radiation output of the actual object, ε is the emissivity of the object, σ is the Boltzmann constant, and T is the thermodynamic temperature of the object. It can be seen that there are two effective ways to reduce infrared radiation, controlling the emissivity and controlling the temperature. At present, low-emissivity coating is one of the main technical means of infrared stealth, and thermal radiation is proportional to the fourth power of tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H3/00B32B9/04B32B15/04B32B33/00
CPCF41H3/00B32B9/04B32B15/04B32B33/00B32B2307/212B32B2571/02
Inventor 屈绍波徐翠莲王甲富庞永强马华王军李勇峰杜洪亮
Owner AIR FORCE UNIV PLA
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