Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Simulator Development for Startup Analysis of Staged Combustion Cycle Engine Powerpack

다단연소사이클 엔진 파워팩 시동 해석 시뮬레이터 개발

  • Lee, Suji (Aerospace System Engineering, University of Science & Technology) ;
  • Moon, Insang (Rocket Engine Team, Korea Aerospace Research Institute)
  • Received : 2015.06.03
  • Accepted : 2015.08.24
  • Published : 2015.10.01
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Abstract

A liquid rocket engine system can cause rapid pressure and temperature variations during the startup period. Thus the startup analysis is required to reduce time and expense for successful development of liquid rocket engine through the startup prediction. In this study, a startup analysis simulator is developed for a staged combustion cycle engine powerpack. This simulator calculates propellant flow rates using pressure and flow rate balances. In addition, a rotational speed of turbopump is obtained as a function of time by mathematical modeling. A startup analysis result shows that the time to reach a steady-state and a rotational speed at the steady-state are 1.3 sec and 27,500 rpm, respectively. Moreover it can indicate proper startup sequences for stable operation.

액체로켓엔진은 시동단계에서 갑작스런 압력 및 온도 등의 부하변동이 발생할 수 있다. 따라서 성공적인 액체로켓엔진 개발과 함께 비용, 시간을 절감하기 위해 시동 해석이 필요하다. 본 연구에서는 다단연소사이클 액체로켓엔진 파워팩에 대한 시동 해석 시뮬레이터를 개발하여 압력 및 유량 밸런스를 통한 유량을 결정하고 터빈 및 펌프의 수학적 모델링을 통해 최종적으로 시간에 따른 터보펌프의 회전속도를 구하였다. 시동 해석 결과, 정상상태도달까지 약 1.3초가 소요되었으며 이때의 회전속도로는 27,500 rpm을 얻었다. 또한 안정적 시동을 위한 적절한 시퀀스 제시가 가능함을 확인했다.

Keywords

References

  1. Kanumuri, A., Wakamatsu, Y., Shimura, T., Toki, K. and Torii, Y., "Start Transient Analysis of Turbopump-fed LOX/LH2 Rocket Engine (LE-5)," NAL-TR-868, 1985.
  2. Mahyar, N.T., Seyed, A.R.J.C. and Hassan, K., "Modeling and Simulation of Open Cycle Liquid Propellant Engines," Journal of Science and Engineering, Vol. 1, No. 1, pp. 17-37, 2013.
  3. Park, S.Y., Nam, C.H., Moon, I.S. and Seol, W.S., "A Study on the Start Transient Analysis of the Turbopump-fed Liquid Rocket Engine," Journal of Aerospace Technology, Vol. 4, No. 2, pp. 142-152, 2005.
  4. Nam, C.H. and Park, S.Y., "A Study on Start-up of 75tonf Thrust Class Liquid Propellant Rocket Engine," The Korean Society of Mechanical Engineers, Vol. 2013, No. 5, pp. 206-208, 2013.
  5. Lee, S. and Moon, I., "A Study on the Start Transient Analysis of the Staged Combustion Cycle Engine," 2014 KSPE Fal Conference, Jeongsun, Kangwondo, Korea, pp. 634-638, Dec. 2014.
  6. Gordon, S. and McBride, B.J., "Computer Program for Calculation of Complex Chemical Equilibrium Compositions and Applications," NASA Reference Publication 1311, Cleveland, O.H., U.S.A., E-8017-1, 1996.
  7. Koo, J.Y., Roh, T.S., Moon, H.J., Yoon, Y.B., Lee, S.T., Lee, C.G. and Cho, Y.H., Rocket Engineering, 1st ed., Kyobo Book Centre., Seoul, Korea., 2008.

Cited by

  1. Startup Analysis Simulator for a Small Staged Combustion–Cycle Engine Powerpack vol.30, pp.6, 2017, https://doi.org/10.1061/(ASCE)AS.1943-5525.0000750
  2. Startup Analysis of Staged Combustion Cycle Engine Powerpack vol.20, pp.3, 2016, https://doi.org/10.6108/KSPE.2016.20.3.001
  3. Development Trend of Korean Staged Combustion Cycle Rocket Engine vol.22, pp.3, 2018, https://doi.org/10.6108/KSPE.2018.22.3.109