Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Feasibility Study of the Application of Infinite Tube Probe in High Temperature Environment

고온 환경에서 무한 튜브 검출기의 적용에 관한 타당성 연구

  • Kim, Hyeonjun (Combustion Chamber Team, Korea Aerospace Research Institute) ;
  • Ryu, Chulsung (Combustion Chamber Team, Korea Aerospace Research Institute)
  • Received : 2020.08.20
  • Accepted : 2020.10.23
  • Published : 2020.12.31
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Abstract

Dynamic pressure sensor used in liquid rocket engine combustor and gas turbine is recess-mounted usually because it should work in high temperature environment. Although recess-mounted method can protect it from combustion gas in high temperature, tube resonance occurs in a tube-cavity system. To reduce it, the infinite tube probe(ITP) was introduced in this study. The ITP model suggested in previous literature was validated with experimental data and frequency response characteristics were analyzed. Guidelines for designing the ITP were suggested as frequency response profiles varied with geometric information and physical properties using this model.

액체로켓엔진 연소기와 가스터빈에 사용되는 동압센서는 고온의 환경에서 작동되어야 하므로 보통 리세스 마운트로 체결된다. 리세스 마운트 방식은 고온의 연소가스로부터 센서를 보호할 수 있으나 튜브-캐비티 시스템에서 튜브 공진이 발생한다. 본 연구에서는 이를 줄이기 위해 ITP를 도입하였다. 과거 문헌에서 제안한 ITP 모델을 실험 결과와 검증하고 응답특성을 분석하였다. 이 모델을 이용하여 기하학적 형상과 물리량을 변화시켜 주파수 응답 분포를 변화시킴으로써 ITP를 설계하기 위한 가이드라인을 제안하였다.

Keywords

Acknowledgement

본 연구는 "한국형발사체개발사업(KSLV-II)"의 지원으로 수행되었습니다.

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