한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제17권5호
  • /
  • Pages.37-46
  • /
  • 2013
  • /
  • 1226-6027(pISSN)
  • /
  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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동축형 다공성재 분사기의 에탄올/아산화질소 연소성능

Combustion Performance of a Coaxial Porous Injector using Ethanol/N2O Propellant

  • Kim, Dohun (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lee, Keonwoong (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Koo, Jaye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 투고 : 2013.04.10
  • 심사 : 2013.09.13
  • 발행 : 2013.10.01
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초록

2상유체 동축형 다공성재 분사기는 중심포스트에서 분사되는 액체제트 주위로 형성된 다공성재 실린더의 내부 표면에서 기체를 반경방향으로 분사한다. 동축형 다공성재 분사기의 추진제 혼합비에 따른 연소성능을 분석하기 위하여 에탄올/아산화질소 추진제를 사용한 단일 축소형 분사기의 연소시험이 수행되었으며, 수집된 데이터 및 계산된 성능인자들에 대하여 불확실도 해석이 이루어졌다. 연소시험에 의한 추진제 혼합비에 따른 특성속도 경향은 CEA 이론값과 유사하였으나 최대값을 가지는 혼합비 영역이 이론혼합비영역에 가까웠다. 특성속도효율은 산화제 과잉 영역으로 갈수록 더 높게 나타났다.

The gas jet from a coaxial porous injector for two-phase flows is discharged radially from the porous surface, which encloses the center liquid jet. Several hot-firing test using ethanol/nitrous oxide propellants was conducted to analyze the effect of oxidizer/fuel ratio on the combustion performance, and the uncertainty analysis was performed for the results. The characteristic velocity was affected by oxidizer/fuel ratio similarly with the results of CEA calculation except that the maximum characteristic velocity was appeared in the stoichiometric ratio. The characteristic velocity efficiency was increased as the oxidizer/fuel ratio increases.

키워드

참고문헌

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