한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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Spray Characteristics of the Pressure Swirl Injector at Airplane Operating Conditions

항공기 작동조건에 따른 압력식 스월 인젝터의 분무특성 연구

  • 최채홍 (전북대학교 항공우주공학과) ;
  • 최성만 (전북대학교 항공우주공학과) ;
  • 이동호 (한국항공우주연구원)
  • Published : 2008.03.26
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Abstract

Spray characteristics of the APU simplex fuel nozzle are investigated. Four flight conditions such as sea level idle, sea level max power, 20,000 feet idle, 20,000 feet max power are used as spray experimental conditions. Spray visualization was performed by using ND-YAG laser. Droplet size and velocity were measured by using PDPA(Phase Doppler Particle Analyzer) system. From the test result, SMD is 100 ${\mu}$m�� and velocity is 10 m/s at 20,000 ft idle condition. In this condition, flame unstability could be occurred due to the higher drop diameter. Therefore it is necessary to decrease the droplet diameter in the high altitude condition.

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