Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Infrared Signal Characteristics of Small Turbojet Engine Plume by Observation Angle

소형 터보젯 엔진 후류의 측정 각도 별 적외선 신호 특성

  • Choi, Jae Won (Department of Aeronautical Mechanical Design Engineering, Koera National University of Transportation) ;
  • Jang, Hyeonsik (Aerospace Engineering Department, Jeonbuk National University) ;
  • Kim, Hye Min (Department of Aeronautical Mechanical Design Engineering, Koera National University of Transportation) ;
  • Choi, Seongman (Aerospace Engineering Department, Jeonbuk National University)
  • Received : 2021.03.16
  • Accepted : 2021.06.28
  • Published : 2021.08.31
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Abstract

Infrared (IR) stealth technology to protect aircraft from heat-tracking missiles is a very important factor in the development of military aircraft. In this study, the intensities of signal generation were compared by observing the IR signals generated from the plumes of the engine and identifying them for each measurement angle. To simulate a jet engine applied to an actual aircraft, a small turbojet engine was constructed, the infrared signal characteristics for each wavelength were identified according to the measurement angle, and the total infrared radiance was derived by integrating the signal for each wavelength. Through this study, we intend to present basic data for improving the infrared stealth performance of aircraft.

열 추적 미사일로부터 항공기를 보호하기 위한 적외선(IR: InfraRed) 스텔스 기술은 군용 항공기 개발에 있어 매우 중요한 요소이다. 본 연구에서는 항공기에서 발생하는 다양한 적외선 신호 중 엔진 후류에서 발생하는 적외선 신호를 관측하고 이를 측정 각도별로 확인하여 신호 강도를 비교하였다. 실제 항공기에 적용된 제트 엔진을 모사하기 위해 소형 터보젯 엔진을 구성하였으며, 측정 각도에 따른 파장별 적외선 신호 특성을 확인하였고 파장별 신호를 적분하여 측정 범위 내 전체 적외선 radiance를 도출하였다. 본 연구를 통해 항공기 적외선 스텔스 성능 향상을 위한 기초 데이터를 제시하고자 한다.

Keywords

Acknowledgement

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

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