한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제21권4호
  • /
  • Pages.28-35
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  • 2017
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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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액체로켓엔진용 연소기 산화제 개폐밸브 성능 특성

Performance Characteristics of a Main Oxidizer Shutoff Valve for Liquid Rocket Engines

  • Jeong, Daeseong (Aerospace System Engineering, University of Science and Technology) ;
  • Hong, Moongeun (Aerospace System Engineering, University of Science and Technology) ;
  • Han, Sangyeop (Launcher Propulsion Control Team, Korea Aerospace Research Institute)
  • 투고 : 2017.02.06
  • 심사 : 2017.05.03
  • 발행 : 2017.08.01
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초록

액체 추진 로켓 엔진에서 연소실로 향하는 산화제 공급은 연소기 산화제 개폐밸브에 의해서 제어된다. 산화제의 안정적인 공급을 위하여 밸브가 열려있을 때의 유량조건을 만족해야 할 뿐만 아니라, 산화제 공급라인의 예냉을 위해 밸브가 닫혀있을 때에도 요구되는 유량조건을 만족해야 한다. 본 연구에서는 연소기 산화제 개폐밸브의 재순환 유량특성을 확인하기 위한 시험을 수행하였고, 밸브 내부에 작용하는 힘평형 관계식을 이용하여 극저온 수명시험 이후 스프링 상수가 변화하는 경향을 확인하였다.

A main oxidizer shutoff valve controls the supply of the oxidizer flow into the combustion chamber of a liquid rocket engine. This shutoff valve also carries out the pre-chilling of oxidizer supply lines by permitting recycling flow for stable transient start of the engine. In the present paper, the flow tests for the recycling line of the valve were conducted in order to evaluate the cooling performance of the main oxidizer shutoff valve. In addition, cryogenic life-cycle tests were performed with an assumption of the increase of spring constant with increasing valve operating times due to ductile-brittle transition effects.

키워드

참고문헌

  1. Jeon, J., Hong, M., Kim, H. and Lee, S.Y., "A Study on the Force Balance of a Main Oxidizer shutoff Valve," Journal of the Korean Society of Aeronautical & Space Sciences, Vol. 37, No. 8, pp. 812-818, 2009. https://doi.org/10.5139/JKSAS.2009.37.8.812
  2. Dieter, K.H. and David, H.H., Modern Engineering for Design of Liquid-Propellant Rocket Engines, American Institute of Aeronautics and Astronautics Inc., Washington DC, W.A., U.S.A., 1992.
  3. 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
  4. Randal, F.B., Cryogenic systems, 2nd ed., Oxford University Press Inc., New York, N.Y., U.S.A., 1985.
  5. Hong, M., "Specifications of a 75-tonf main oxidizer shutoff valve," L2-SP-00162, KARI-IDMS, 2016.
  6. Hong, M., "Acceptance test of a 75-tonf main oxidizer shutoff valve DM03-03," L2-TR-00442, KARI-IDMS, 2016.
  7. William, D.C. Jr., Materials Science and Engineering an Introduction, 7th ed., John Wiley & Sons Inc., New York, N.Y., U.S.A., 2007.