한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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Numerical Study for the Effect of Engine Exhaust Gas on the Airframe of Smart UAV

스마트무인기 엔진 배기가스가 기체에 미치는 영향에 관한 수치적 연구

  • 이창호 (항공우주연구원 스마트무인기사업단) ;
  • 김철완 (항공우주연구원 공력구조팀) ;
  • 김재무 (항공우주연구원 스마트무인기사업단)
  • Published : 2008.03.26
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Abstract

An ejector is designed for the purpose of engine bay cooling. The primary flow of the ejector is the exhaust gas of the PW206C turboshaft engine. The mass flow of secondary flow is calculated by using the approximate analytic equation. And the effect of exhaust gas flow on the fuselage surface is investigated by using the Fluent Code. Three types of exhaust duct shape were compared in the viewpoint of surface temperature and aerodynamic drag. As a result, exhaust duct shape P3 shows minimum interference of exhaust gas and fuselage and minimum increment of drag among the three candidate shapes.

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