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Conceptual Study of an Exhaust Nozzle of an Afterburning Turbofan Engine

후기연소기 장착 터보팬엔진의 배기노즐 개념연구

  • Choi, Seongman (Aerospace Engineering Department, Chonbuk National University) ;
  • Myong, Rhoshin (Aerospace Engineering Department, Gyeongsang National University) ;
  • Kim, Woncheol (7th R&D Institute-2, Agency for Defense Development)
  • Received : 2013.12.21
  • Accepted : 2014.05.14
  • Published : 2014.06.01

Abstract

This paper presents a preliminary study of a convergent divergent nozzle in an afterburning turbofan engine of a supersonic aircraft engine. In order to design a convergent divergent nozzle, cycle model of a low bypass afterburning turbofan engine of which thrust class is 29,000 lbf at a sea level static condition is established. The cycle analysis at the design point is conducted by Gasturb 12 software and one dimensional gas properties at a downstream direction of the turbine are obtained. The dimension and configuration of an model turbofan engine are derived from take-off operation with wet reheat condition. The off-design cycle calculation is conducted at the all flight envelope on the maximum flight Mach number of 2.0 and maximum flight altitude of 15,000 m.

초음속 항공기의 추진기관으로 이용되는 후기연소기 장착 터보팬 엔진의 축소-확대 노즐에 대한 예비 연구를 수행하였다. 이를 위하여 지상정지 표준 대기에서 29,000 lbf 급의 추력을 발생시키는 저 바이패스비를 가진 후기 연소기 장착 터보팬 엔진에 대한 사이클 모델을 설정하였다. 설정된 모델 엔진을 이용하여 Gasturb 12 소프트웨어로 설계점에 대한 성능해석을 수행하여 터빈 후방에서의 일차원 유동특성을 얻을 수 있었다. 항공기 이륙시의 최대추력 조건으로부터 바이패스 덕트와 코어엔진에서 흐르는 가스유동으로부터 엔진의 크기 및 형상에 대한 기본제원을 도출하였다. 탈 설계점 성능해석은 최대 비행 마하수 2.0, 최고 비행고도 15,000 m로 운용되는 항공기의 다양한 운용조건에 대하여 수행하였다.

Keywords

References

  1. Ball, R.E., The Fundamentals of Aircraft Combat Survivability Analysis and Design, AIAA Education Series, 2nd Edition, 2003.
  2. Mahulikar, S.P., Rao, G.A. and Kolhe, P.S., "Infrared Signatures of Low Flying Aircraft and Their Rear Fuselage Skin's Emissivity Optimisation," Journal of Aircraft, Vol. 43, No. 1, pp. 226-232, 2006. https://doi.org/10.2514/1.15365
  3. Sonawane, H.R. and Mahulikar, S.P., "Tacktical Air Warface: Generic Model for Aircraft Susceptibility to Infrared Guided Missiles," Journal of Aerospace Sicence Technology, Vol. 16, No. 4, pp. 249-260, 2011.
  4. Go, G.Y., Kim, M.Y. and Baek, S.W., "Effects of Flight Conditions on IR Signature from Aircraft Exhaust Plume," Journal of the Korean Society of Propulsion Engineers, Vol. 16, No. 5, pp. 58-66, 2012. https://doi.org/10.6108/KSPE.2012.16.5.058
  5. Follen, G. and Aubuchon, M., "Numerical Zooming Between a NPSS Engine System Simulation and a One-Dimensional High Compressor Analysis Code," NASA TM-2000-209913, 2000.
  6. Kang, M.C., Ki, J.Y. and Kong, C.D., "A Study on Performance Analysis of Turbofan Engine using EASY5," The Korean Society for Aeronautical and Space Science 2002 Spring Symposium, pp. 445-448, 2002.
  7. National Aerospace Laboratory NLR, GSP11 User's Manual, 2011.
  8. Kurzke, J., Gasturb 12 User Manual, www.gasturb.de, 2012.
  9. Kurzke, J., "Model Based Gas Turbine Parameter Corrections," Proceedings of 2003 ASME Turbo Expo, GT2003-38234, 2003.
  10. Kurzke, J., "Modeling the Thrust Management of Commercial Airliners," International Symposium on Air Breathing Engine 2013, ISABE-2013-1430, 2013.
  11. Choi, W., You, H.J. and Lee, I.W., "The Performance Modeling of a Low Bypass Turbofan Engine for Supersonic Aircraft," Journal of the Korean Society of Propulsion Engineers, Vol. 14, No. 6, pp. 79-88, 2010.
  12. Kong, C.D., Kang, M.C. and Park, G.L., "Study on Component Map Generation and Performance Simulation of 2-spool Separate Flow Type TurbofanEngine using SIMULINL," Journal of the Korean Society of Propulsion Engineers, Vol. 17, No. 1, pp. 70-79, 2013. https://doi.org/10.6108/KSPE.2013.17.1.070
  13. Kim, J.Y., Chun, S.H., Myong, R.S. and Kim, W.C., "Computational Investigation of the Effect of Various Flight Conditions on Plume Infrared Signature," Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 41, No. 3, pp. 185-193, 2013. https://doi.org/10.5139/JKSAS.2013.41.3.185
  14. Moon, H., Yang, Y.R., Chun, S.H., Choi, S.M., Myong, R.S. and Cho, T.H., "Computation of Flowfield and Infrared Signature in Aircraft Exhaust System for IR Reduction Design," Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 39, No. 7, pp. 652-659, 2011. https://doi.org/10.5139/JKSAS.2011.39.7.652
  15. Mattingly J.D., Heiser W.H and Pratt., D.T., Aircraft Engine Design, AIAA Education Series, 2002.
  16. Lambert M., Jane's All the Worlds Aircraft, 1994.