• Title/Summary/Keyword: 추진제 혼합 장지 실

Search Result 2, Processing Time 0.016 seconds

Development of Inter-propellant Seal for High Thrust Turbopump (고추력 터보펌프용 추진제 혼합 방지 실 개발)

  • Kwak, Hyun-D.;Jeon, Seong-Min;Kim, Jin-Han
    • Tribology and Lubricants
    • /
    • v.24 no.6
    • /
    • pp.349-354
    • /
    • 2008
  • An inter-propellant seal (IPS) for high thrust turbopump is designed. With given operating conditions and requirements, the inter-propellant seal is designed to satisfy the leakage characteristics which is less than 0.1% of normal flow rate of pumps. A numerical analysis is developed to predict the leakage flow rate. The results show that the maximum leakage of LOX and kerosene are less than 0.1% of normal flow rate of pumps, respectively. Based on the numerical analysis results, the detail of IPS is performed. Finally a prototype of IPS is manufactured to perform sets of performance tests in the near future.

Design and Experimental Verification of Uni-Injector Using Gas Methane and Lox as Propellants (가스메탄/액체산소를 추진제로 하는 단일 인젝터 설계 및 실험적 검증)

  • Jeon, Jun Su;Min, Ji Hong;Jang, Ji Hun;Ko, Young Sung;Kim, Sun Jin
    • Transactions of the Korean Society of Mechanical Engineers B
    • /
    • v.37 no.3
    • /
    • pp.275-283
    • /
    • 2013
  • An injector that uses methane gas ($CH_4$) and liquid oxygen ($LO_x$) as propellants was designed to verify the combustion characteristics of an engine that uses methane, which is one of the next-generation propellants. A swirl/shear coaxial-type injector was used, and flow analysis was performed using Fluent to determine the main design parameters of the injector. A hydraulic test was performed to understand the atomization and spray pattern characteristics of the injector. Next, a combustion test was performed at the design point to understand the ignition and combustion stability. Additional combustion tests were performed according to the O/F ratio to investigate the combustion characteristics and stabilities using the characteristic exhaust velocity ($C^*$) and fluctuation of the chamber pressure. The experimental results showed that the combustion efficiency was greater than 90%, and the pressure fluctuation was lower than 2% under all conditions.