Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Analysis on Infrared Stealth Performance of Metal Nano-coating on Radome Surface

레이돔 표면에 금속 나노코팅을 적용한 적외선 저피탐 성능특성 연구

  • Lee, Yongwoo (Department of Mechanical Engineering, Yonsei University) ;
  • Chang, Injoong (Department of Mechanical Engineering, Yonsei University) ;
  • Nam, Juyeong (Department of Mechanical Engineering, Yonsei University) ;
  • Bae, Hyung Mo (Department of Mechanical Engineering, Yonsei University) ;
  • Cho, Hyung Hee (Department of Mechanical Engineering, Yonsei University)
  • 이용우 (연세대학교 기계공학과) ;
  • 장인중 (연세대학교 기계공학과) ;
  • 남주영 (연세대학교 기계공학과) ;
  • 배형모 (연세대학교 기계공학과) ;
  • 조형희 (연세대학교 기계공학과)
  • Received : 2021.12.13
  • Accepted : 2022.04.18
  • Published : 2022.06.05
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Abstract

Infrared stealth technology used in aircraft is applied to reduce the infrared signal by controlling surface temperature and emissivity using internal heat sink, low emissivity material or metamaterial. However, there is one part of the aircraft where the use of this technology is limited, and that is the radome. Especially, radome should have transmittance for the specific radio frequency, therefore, common stealth technology such as emissivity control surfaces cannot be applied to radome surface. In this study, we developed metal nano-coating for infrared stealth which is applicable to radome surface. We designed slot-type pattern for frequency selective transmission in X-band, and also controlled thickness of metal nano-coating for long wavelength infrared emissivity control. As a result, our infrared stealth surface for radome has 93.2 % transmittance in X-band and various infrared emissivities from 0.17 to 0.57 according to nano-coatings thickness. Also, we analyzed infrared signature of radome through numerical simulation, and finally reduced contrast radiant intensity by 97.57 % compared to polyurethane surface.

Keywords

Acknowledgement

본 연구는 방위사업청과 국방과학연구소가 지원하는 항공 피탐지 감소기술 특화연구실 사업의 일환으로 수행되었습니다.

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