한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제24권6호
  • /
  • Pages.85-92
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  • 2020
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  • 1226-6027(pISSN)
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  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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특성길이 변화에 따른 200 N급 기체메탄-액체산소 소형로켓엔진의 성능 비교 분석

A Comparative Analysis for the Performance of 200 N-class Gaseous Methane-Liquid Oxygen Small Rocket Engine According to the Characteristic Length Variation

  • Kang, Yun Hyeong (Department of Mechanical Engineering, Pukyong National University) ;
  • Ahn, Hyun Jong (Department of Mechanical Engineering, Pukyong National University) ;
  • Kim, Jeong Soo (Department of Mechanical Engineering, Pukyong National University)
  • 투고 : 2020.10.09
  • 심사 : 2020.11.30
  • 발행 : 2020.12.31
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초록

200 N급 기체메탄-액체산소 소형로켓엔진의 연소실 특성길이 1.37 m, 1.71 m, 2.06 m에 대한 연소성능 분석을 위해 지상연소시험을 수행하였다. 로켓엔진의 주요 성능 변수로 정상상태에서의 추력, 비추력, 특성속도 등을 획득하였으며, 연소시험을 통해 확인한 성능특성을 CEA 해석으로부터 구한 이론성능과 비교 및 분석하였다. 연소성능에 대한 특성길이의 영향을 관찰한 결과, 최적의 특성길이는 1.71 m와 2.06 m사이에 존재하는 것이 확인되었다.

Ground hot-firing tests were conducted to analyze the combustion performance according to the characteristic lengths 1.37 m, 1.71 m, and 2.06 m of the combustion chamber in 200 N-class GCH4-LOx small rocket engine. Thrust, specific impulse, and characteristic velocity at the steady-state could be obtained as the key performance parameters of the rocket engine. The performance characteristics acquired through the test were compared and analyzed with the theoretical performance calculated from CEA analysis. Observation of the influence of characteristic length on the combustion performance indicates that an optimal characteristic length shall remain between 1.71 m and 2.06 m.

키워드

과제정보

본 논문은 부경대학교 자율창의학술연구비(2019년)에 의하여 연구되었음.

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