Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Non-ignition Evaluation Method for Hypergolic Propellant Using Microreactor

마이크로 반응기를 이용한 접촉점화 추진제의 비점화 평가 방법

  • Lee, Kyounghwan (Department of Mechanical Engineering, Hanbat National University) ;
  • Park, Seonghyeon (Department of Mechanical Engineering, Hanbat National University) ;
  • Kang, Hongjae (Plasma Engineering Laboratory, Korea Institute of Machinery and Materials) ;
  • Lee, Jongkwang (Department of Mechanical Engineering, Hanbat National University)
  • Received : 2022.02.22
  • Accepted : 2022.04.05
  • Published : 2022.04.30
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Abstract

Hypergolic propellant ignited spontaneously when fuel and oxidizer contact without ignition system. Due to this characteristic, the risk of accidents is high when new propellants are evaluated. Prevention of accidents is very important because the damage can be large when the accident occur. In this work, we proposed non-ignition evaluation method which can replace conventional ignition evaluation method by using microreactor. The reactor was fabricated by MEMS. The heat of reaction as according to fuel and NaBH4 was estimated. At the condition of highest heat of reaction ignition was observed by drop test.

접촉점화 추진제는 별도의 점화장치 없이 연료와 산화제의 접촉만으로 점화한다. 이러한 특성으로 새로운 추진제 개발에 있어 점화 가능성을 평가하는 것만으로도 사고의 위험이 높다. 사고가 발생할 경우 피해의 규모가 크고 대형 인명사고로 이어질 수 있기 때문에 사고의 방지가 매우 중요하다. 이 연구에서는 추진제 개발에 있어 안전한 평가 장치로 마이크로 반응기를 제작하여 점화 실험을 대체할 수 있는 비점화 실험을 제안하였다. 마이크로 반응기는 MEMS 공정으로 제작되었으며, NaBH4 혼합 농도에 따른 추진제 간의 반응열을 측정하였다. 액적 낙하 실험 결과, 반응열이 가장 높은 조건에서 점화현상이 관찰되었다.

Keywords

Acknowledgement

이 논문은 2021학년도 한밭대학교 교내학술연구비의 지원을 받았습니다.

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