한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제16권5호
  • /
  • Pages.58-66
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  • 2012
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  • 1226-6027(pISSN)
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  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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비행조건에 따른 항공기 배기플룸의 IR 신호 특성

Effects of Flight Conditions on IR Signature from Aircraft Exhaust Plume

  • 고건영 (전북대학교 항공우주공학과) ;
  • 김만영 (전북대학교 항공우주공학과) ;
  • 백승욱 (한국과학기술원 항공우주공학과)
  • 투고 : 2012.05.22
  • 심사 : 2012.09.21
  • 발행 : 2012.10.01
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초록

기술 수준에 의해 그 우위가 결정되는 현대 전장에서 항공기 플룸과 복사저부가열은 항공기의 생존성에 관련된 중요한 요인이다. 항공기의 생존성을 향상시키기 위해서는 저부가열, 그리고 항공기 플룸으로부터 방사되는 IR 신호가 감소되어야 한다. 본 연구에서는 IR 신호와 복사저부가열 특성을 고도 5km에서 마하수 0.9와 1.6의 조건으로 설정하여 플룸 내 유동 및 열복사 특성을 고찰하였다. 이를 통해 플룸에서의 IR 신호는 $H_2O$와 $CO_2$의 영향으로 인한 높은 방사특성을 확인하였다. 그리고 마하수가 높고 거리가 가까울수록 저부면에서의 복사열유속이 증가됨을 확인하였다.

The IR signature and radiative base heating from an aircraft plume have been important factors for aircraft survivability in modern battle fields. In order to enhance the aircraft survivability and reduce the base heating, infrared signatures emitted from an aircraft exhaust plume should be determined. In this work, therefore, IR signatures and radiative base heating characteristics are examined in the plume exhausted from the aircraft with operating at altitude of 5 km in M=0.9 and 1.6, respectively. As a result, it is found that the particular wavelength IR signature has high spectral characteristics because of $H_2O$ and $CO_2$ gases in the plume, and the radiative heat flux coming into the base plane increases with higher Mach number and shorter distance.

키워드

참고문헌

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피인용 문헌

  1. Conceptual Study of an Exhaust Nozzle of an Afterburning Turbofan Engine vol.18, pp.3, 2014, https://doi.org/10.6108/KSPE.2014.18.3.062