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Journal of Failure Analysis and Prevention

, Volume 15, Issue 2, pp 227–232 | Cite as

Investigation of Flame Blow-Out in a Low Bypass Military Turbofan Engine

  • R. K. Mishra
  • S. Kishorekumar
  • Sunil Chandel
Case History---Peer-Reviewed

Abstract

Flame blow-out is a serious concern for military gas turbine engines, and maintaining a reliable and stable flame in engine throughout the mission is a great challenge. A low bypass military turbo fan engine is investigated for flame blow-out. The history of the engine and its accessories were reviewed. Flight data were analyzed to confirm the blow-out incident. Air flow passages and engine modules were examined for possible foreign object damages or internal damages and found satisfactory. Analysis of atomizer characteristics showed the shifting of spray cone angle and fuel flow rate close to the lower limits. Blockage of atomizer flow passages and liner front end flares could contribute to flame blow-out. One of the filters in the fuel line found damaged. Significant amount of debris were found inside the fuel control valve. From the investigations and evidences, it was concluded that the engine flame blow-out was due to blockage of fuel flow when the air flow was almost steady. Assessment and control of debris in fuel accessories, the periodicity of inspection, and cleaning are very important for maintaining a stable flame throughout the mission. Also understanding the blow-out mechanism in an aero gas turbine engine during maneuvers is necessary to address blow-out issues.

Keywords

Aircraft Failure analysis Catastrophic failure Chemistry Distortion Electron fractography Gas turbine 

References

  1. 1.
    A.H. Lefebvre, Gas Turbine Combustion (Taylor & Francis, Philadelphia, 1998)Google Scholar
  2. 2.
    J.P. Longwell, M.A. Weiss, High temperature reaction rates in hydrocarbon combustion. Ind. Eng. Chem. 47(8), 1643 (1955)CrossRefGoogle Scholar
  3. 3.
    D.R. Ballal, A.H. Lefebvre, Weak extinction limits of turbulent flowing mixtures. ASME J. Eng. Power 101(3), 343–348 (1979)CrossRefGoogle Scholar
  4. 4.
    D.R. Ballal, A.H. Lefebvre, Weak extinction limits of turbulent heterogeneous fuel/air mixtures. J. Eng. Power 102, 416–421 (1980)CrossRefGoogle Scholar
  5. 5.
    P. Garrison, Why the fire in a perfectly healthy jet engine can die. Air & Space Magazine, September 01, 2006Google Scholar
  6. 6.
    W.S. Derr, A.M. Mellor, Characteristic time for lean blow off in turbine combustor. J. Propuls. Power 3(4), 377–380 (1987)CrossRefGoogle Scholar
  7. 7.
    A.H. Lefebvre, Theoretical aspects of gas turbine combustion performance. CoA Note Aero No. 163, Cranfield University, Bedford, 1966Google Scholar
  8. 8.
    D.B. Spalding, Some Fundamentals of Combustion (Butterworth Scientific Publications, London, 1955)Google Scholar
  9. 9.
    A.M. Kanury, Introduction to Combustion Phenomena (Gordon & Beach, New York, 1975)Google Scholar
  10. 10.
    A.H. Lefebvre, Atomization and Spray (Taylor & Francis, New York, 1989)Google Scholar
  11. 11.
    Y.I. Khavkin, Theory and Practice of Swirl Atomizers (Taylor & Francis, New York, 2003)Google Scholar
  12. 12.
    C.T. Crowe, J.D. Schwarzkopf, M. Sommerfeld, Y. Tsuji, Multiphase Flows with Droplets and Particles (CRC Press, Boca Raton, 2011)CrossRefGoogle Scholar
  13. 13.
    F. Peng, S.K. Aggarwal, A review of droplet dynamics and vaporization modeling for engineering calculations. ASME paper 94-GT-215-1994Google Scholar
  14. 14.
    M. Stohr, I. Boxx, C. Carter, W. Meier, Dynamics of lean blow out of a swirl-stabilized flame in a gas turbine model combustor. Proc. Combust. Inst. 33, 2953–2960 (2011)CrossRefGoogle Scholar
  15. 15.
    H. Nicholson, J. Field, Some experimental techniques for the investigation of the mechanism of flame stabilization in the wake of bluff bodies. Proc. Combust. Inst. 3, 44–68 (1951)Google Scholar
  16. 16.
    S. Armand, M. Chen, A combustion study of gas turbines using multi-species/reacting computational fluid dynamic, Proceedings of ASME Turbo Expo 2002, GT-2002-30105.Google Scholar
  17. 17.
    R.E. Melecki et al, Application of an advanced CFD-based analysis system to the PW6000 combustor to optimize exit temperature distribution-part-1, 2001-GT-0062, 2001.Google Scholar
  18. 18.
    P.J. Stopford, CFD modeling of industrial burners and furnaces. 6th European Conference on Industrial Furnaces and Boilers, Sinatra, Portugal, April, 2002.Google Scholar

Copyright information

© ASM International 2015

Authors and Affiliations

  1. 1.Regional Centre for Military Airworthiness (Engines)BangaloreIndia
  2. 2.Gas Turbine Research EstablishmentBangaloreIndia
  3. 3.Mechanical Engineering DepartmentDefence Institute of Advanced TechnologyPuneIndia

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