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작동 횟수에 따른 연소기 산화제 개폐밸브 작동 특성

Operating Characteristics of a Main Oxidizer Shut-off Valve According to Operating Times

  • Hong, Moongeun (Liquid Propulsion Control Team, Korea Aerospace Research Institute)
  • 투고 : 2020.06.03
  • 심사 : 2020.07.06
  • 발행 : 2020.10.31

초록

본 논문에서 연소기 산화제 개폐밸브의 작동 특성 변화를 확인하기 위해 극저온 및 상온 작동 시험으로 이뤄진 밸브 내구성시험 내용과 함께 시험 결과를 소개하였다. 극저온 및 상온 내구성시험을 통해 밸브 작동 횟수와 상관없이 밸브의 작동 특성이 매우 안정적으로 유지되는 것을 확인하였다. 밸브 작동 특성을 대표하는 주요 압력 측정값과 마찰력 및 스프링 예측값이 밸브 내구성시험 내내 대략 최대 ±3% 이내 수준에서 동일하게 측정되었으며, 연소기 산화제 개폐밸브의 이와 같은 안정적인 밸브 작동 특성은 해당 밸브가 적용되는 엔진의 안정적인 시동 및 종료를 위한 중요한 역할을 할 수 있을 것으로 기대한다.

The operating characteristics of a main oxidizer shut-off valve have been examined by life-cycle tests in which the valve operates as many times as is required at room and cryogenic temperatures. It is shown that there is no significant change of the operating characteristics in the course of the life-cycle tests. The critical pressures and principal forces, which represent the operating characteristics, differ at each operating time by less than about 3%. These qualified operating characteristics of the valve are expected to play an indispensible role in the stable startup and shutdown of a liquid rocket engine.

키워드

참고문헌

  1. Lee, K.-J. et al., "A Review on the Factors Influencing the Stable Startup of a Liquid Rocket Engine," Proceeding of the Korean Society for Propulsion Engineers Spring Conference, May 2019, KSPE 2019-1173, 2019.
  2. Jeong, D., Hong, M. and Han, S., "Performance Characteristics of a Main Oxidizer Shutoff Valve for Liquid Rocket Engines," Journal of the Korean Society of Propulsion Engineers, Vol. 21, No. 4, pp. 28-35, 2017. https://doi.org/10.6108/KSPE.2017.21.4.028
  3. Hong, M., "Design Improvement of Main Oxidizer Shut-off Valve DM05 for a 75-tonf Liquid Rocket Engine," L2-DR-01639, KARI-IDMS, 2017.
  4. Kim, D., Hong, M., Park, J. and Lee, S.Y., "Study for the Development of a Main Oxidizer Shut-off Valve for Liquid Rocket Engines," Journal of the Korean Society of Propulsion Engineers, Vol. 17, No. 6, pp. 113-119, 2013. https://doi.org/10.6108/KSPE.2013.17.6.113
  5. Hong, M., "Specifications for a 75-tonf Main Oxidizer Shut-off Valve," L2-SP-00223, KARI-IDMS, 2020.
  6. Hong, M., "Acceptance Test of Main Oxidizer Shut-off Valve DM08-01 for a 75-tonf Liquid Rocket Engine," L2-TR-01766, KARI-IDMS, 2018.