Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Results of Cold Flow Test and Design of Injectors for Oxidizer-rich Preburner

산화제 과잉 예연소기용 분사기 설계 및 수류 시험 결과

  • So, YoonSeok (Engine Test and Evaluation Team, Korea Aerospace Research Institute) ;
  • Woo, SeongPil (Engine Test and Evaluation Team, Korea Aerospace Research Institute) ;
  • Lee, Kwang-Jin (Engine Test and Evaluation Team, Korea Aerospace Research Institute) ;
  • Yu, ByungIl (Engine Test and Evaluation Team, Korea Aerospace Research Institute) ;
  • Kim, Jinhyung (Aerospace Division, Vitzro Nextech Co., Ltd) ;
  • Cho, Hwangrae (Aerospace Division, Vitzro Nextech Co., Ltd) ;
  • Bang, Jeongsuk (Aerospace Division, Vitzro Nextech Co., Ltd) ;
  • Han, YeongMin (Engine Test and Evaluation Team, Korea Aerospace Research Institute)
  • Received : 2017.02.03
  • Accepted : 2017.09.02
  • Published : 2018.02.01
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Abstract

This paper presents the design and cold flow test results of oxidizer-rich preburner injectors for a 9 tonf-class staged combustion engine cycle. Three types of coaxial swirl injectors were designed, and 12 injectors were designed for each type. The diameters of the fuel tangential holes are identical. The diameters of the oxidizer tangential holes were varied to investigate the influence of combustion in the oxidizer-rich preburner according to the momentum ratio of the gas oxidizer generated from combustion in the injector chamber and liquid oxidizer through the cooling channel. It will be verified through a powerpack and combustion test using an oxidizer-rich preburner. In the cold flow test, the fuel flow rate and oxidizer tangential hole flow rate reached the target value based on the designed differential pressure.

본 논문에서는 9톤급 다단연소사이클 엔진용 산화제 과잉 예연소기 분사기 설계 및 수류 시험 결과에 대해 기술하고자 한다. 총 3 종류의 동축 와류 분사기를 설계하고 각 종류마다 12개의 분사기를 제작하였다. 연료 접선 홀 직경은 모두 동일하며, 산화제와 연료가 연소되어 발생하는 기체 산화제와 냉각 채널에서 배출되는 액체 산화제 모멘텀의 비에 따라 산화제 과잉 예연소기 분사기의 연소에 어떠한 영향이 있는지를 연구하기 위해 산화제 접선 홀의 직경을 다르게 제작하였다. 추후에 산화제 과잉 예연소기를 이용한 파워팩과 연소시험을 통해 검증될 예정이다. 수류 시험 결과, 연료 유량 및 산화제 접선 홀의 유량값은 설계 차압을 기준으로 목표 유량값에 도달하였다.

Keywords

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