Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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A Comparative Study of Frequency Response Models for Pressure Transmission System

압력전달시스템을 위한 주파수응답모델들의 비교 연구

  • Kim, Hyeonjun (Combustion Chamber Team, Korea Aerospace Research Institute) ;
  • Choi, Hwan-Seok (Combustion Chamber Team, Korea Aerospace Research Institute)
  • Received : 2019.12.30
  • Accepted : 2020.03.05
  • Published : 2020.04.01
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Abstract

Dynamic pressure transducer needs to be flush-mounted on hardware due to frequency response characteristics of pressure transmission system. However, it is sometimes necessary to be mounted in recessed configuration due to insufficient space for sensor installation and for protection of sensor from thermal damage. Dynamic response characteristics should be considered due to distortion of original dynamic pressure signal in the pressure transmission system. In this study, small perturbation model and 2nd order reduced model were compared with experiments and a guideline for selecting a frequency response model was suggested.

압력전달시스템의 주파수응답특성의 효과 때문에 동압센서를 하드웨어에 flush 마운트 형태로 설치해야 한다. 그러나 측정을 위한 포트 주변의 협소한 조건 혹은 고온의 연소가스로부터 센서가 손상되는 것을 막기 위해 벽면 안쪽에 recess 마운트 방식을 설계하기도 한다. 압력전달시스템에서 동압 신호의 왜곡이 발생하기 때문에 동적 응답 특성을 반드시 고려해야 한다. 본 연구에서는 섭동 모델과 2차 축소 모델을 실험치와 비교하였고 주파수응답모델을 선택하기 위한 가이드라인을 제시하였다.

Keywords

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