Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Configuration Design, Hot-firing Test and Performance Evaluation of 200 N-Class GCH4/LOx Small Rocket Engine (Part II: Steady State-mode Ground Hot-firing Test)

200 N급 GCH4/LOx 소형로켓엔진의 형상설계와 성능시험평가 (Part II: 정상상태 지상연소시험)

  • Kim, Min Cheol (Department of Mechanical Engineering, Pukyong National University) ;
  • Kim, Young Jin (Department of Mechanical Engineering, Pukyong National University) ;
  • Kim, Jeong Soo (Department of Mechanical Engineering, Pukyong National University)
  • Received : 2019.10.29
  • Accepted : 2020.01.09
  • Published : 2020.02.01
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Abstract

A performance evaluation of the 200 N-class GCH4/LOx small rocket engine was performed through ground hot-firing test. As a result, the combustion pressure and thrust raised with the increase of the oxidizer supply pressure, and thus the specific impulse, characteristic velocity, and their efficiency increased. The characteristic velocity was measured at about 90% performance efficiency. The change of chamber aspect ratio did not affect the performance of the rocket engine in the test condition specified. In addition, uncertainty evaluation was conducted to ensure the reliability of the test results.

200 N급 기체메탄/액체산소 소형로켓엔진의 성능시험평가 수행되었다. 산화제 공급압이 증가함에 따라 연소압과 추력이 증가하였으며, 이에 따라 비추력과 특성속도 및 그 효율이 증가하였다. 특성속도는 약 90%의 성능효율로 측정되었다. 시험조건의 연소실 종횡비 변화는 추력성능에 영향을 미치지 않았다. 또한, 시험결과의 신뢰도 확보를 위하여 불확도평가를 수행하였다.

Keywords

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