Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Comparison of Combustion Efficiency of Multi Hole Pintle Injector and Continuous Pintle Injector

다중 홀 핀틀 인젝터와 연속형 핀틀 인젝터의 연소성능 비교

  • Nam, JeongSoo (Graduate school, Goyang, Korea Aerospace University) ;
  • Lee, KeonWoong (Department of Smart Air Mobility, Goyang, Korea Aerospace University) ;
  • Koo, JaYe (School of Aerospace and Mechanical Engineering, Goyang, Korea Aerospace University)
  • Received : 2020.07.28
  • Accepted : 2021.11.22
  • Published : 2022.03.01
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Abstract

Pintle injector is the most suitable injector for thrust control because it can control the area of propellant injection. Accordingly, the combustion test of multiple hole pintle injector and continuous type pintle injector was carried out in this paper using liquid oxygen and gas methane. The combustion performance of the two pintles was verified with the characteristic speed efficiency, and the experimental results were compared according to the O/F and combustion chamber pressure and under similar conditions. The efficiency of the multi hole pintle was generally somewhat higher than continuous pintle when pintle opening distance(the area of dispensing oxidizer) was in a 100% thrust condition.

핀틀 인젝터는 추진제 분사면적 조절이 가능하기 때문에 추력제어에 가장 적합한 인젝터이다. 그에 따라 본 논문에서는 액체산소와 기체메탄을 사용하여 다중 홀 핀틀 인젝터와 연속형 핀틀 인젝터의 연소시험을 수행하였다. 특성속도효율로 두 핀틀의 연소성능을 확인하였고, O/F와 연소실 압력에 따라 두 파라미터가 유사한 조건에서 실험결과를 비교하였다. 개도(산화제 분사면적)가 100% 추력조건일 때 다중 홀 핀틀의 효율이 연속형 핀틀보다 다소 높은 결과를 나타내었다.

Keywords

Acknowledgement

이 논문은 2020년 한국연구재단 BK21 FOUR(과제번호 : 5199990714521)의 지원을 받아 작성되었습니다.

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