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Abstract
The performance deterioration of a low bypass turbofan engine is analyzed to find out its causes. The performance parameters are compared with their limitations for a specific throttle setting. Dirt buildup, soot deposit, de-twisting of turbine blades, malfunction of atomizers and fuel system accessories are found to degrade the engine health and performance before the intended service period. Periodic compressor wash and engine maintenance, cleaning or replacement of fuel filters and good assembly practices are found beneficial in addressing the issues and retaining the engine performance.
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References
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- Nicholas, T., "High Cycle Fatigue Life Management in Gas Turbine Engines", RTO-AVTP Workshop on Qualification of Life Extension Schemes for Engine Components, Corfu, Greece, October 1998, NATO Pub., RTO-MP- 17, AC/323(AVT)TP/7, March 1999, pp.4-114-9.
- Suresh, S., Fatigue of Materials, 2nd Edn., 2003, Cambridge University Press.
- Philip P. Walsh and Paul Fletcher., "Gas Turbine Performance", 2004, Blackwell Science Ltd.
- Mishra, R. K., "TBO Life Extension of a Military Turbojet Engine by Sampling", International Journal of Applied Engineering and Technology, Vol.3 (4), October-December, 2013, pp.23-32.
- Cohen, H., Rogers, G. F. C. and Saravanamuttoo, H. I. G., Gas Turbine Theory, Longman Group Limited, 1996.
- Tony Giampaolo., The Gas Turbine Hand Book: Principles and Practices, 2nd Edition, Fairmont Press, Inc., 2003.
- Ogaji, S. O. T, et. al., "Parameter Selection for Diagnosing a Gas-Turbine’s Performance-Deterioration", Applied Energy, Vol.73, 2002, pp.25-46.
- Mishra, R. K., "Fouling and Corrosion in an Aero Gas Turbine Compressor", Journal of Failure Analysis and Prevention, Vol.15, No.6, 2015, pp.837-845, DOI: 10.1007/s11668-015-0023-8.
- SAE Aerospace Information Report: Environmental Control System Contamination, SAE International, 2007, New York.
- Meher-Homji, C. and Bromley, A., "Gas Turbine Axial Compressor Fouling and Washing", Proceedings of the 33rd Turbomachinery Symposium, 2004.
- Brocklehurst, H. T., Priddin, C. H. and Moss, J. B., "Soot Prediction within an Aero Gas Turbine Combustion Chamber", ASME Paper No. 97-GT-148, 1997.
- Xu, F., El-Leathy, A. M., Kim, C. H. and Faeth, G. M., "Soot Surface Oxidation in Hydrocarbon/Air Diffusion Fames at Atmospheric Pressure", Combustion and Flame, Vol.132, 2003, pp.43-57.
- Lefebvre, A. H., Gas Turbine Combustion, Hemisphere Publishing Corp., 1983.
- Mishra, R. K., Kishore Kumar, S. and Sunil Chandel., "Effect of Spray Cone Angle on Flame Stability in an Annular Gas Turbine Combustor", International Journal of Turbo and Jet Engines, ISSN (Online) 2191-0332, ISSN (Print) 0334-0082, DOI:10.1515/tjj-2015-0006, March 2015.
- Li, L., Peng and Liu, T., "Combustion and Cooling Performance in Aero-Engine Annular Combustor", Journal of Applied Thermal Engineering 26, 2006, pp.1771-1779.
- Zheng, Q. P., Jasuja, A. K. and Lefebvre, A. H., "Structure of Airblast Sprays Under High Ambient Pressure Conditions", Journal of Engineering for Gas Turbines and Power, Vol.119, No.3, 1997, pp.512-518.
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References
Rainer Kurz and Klaus Brun., "Degradation of Gas Turbine Performance in Natural Gas Service", Journal of Natural Gas Science and Engineering, Vol.1, 2009, pp.95-102.
Nicholas, T., "High Cycle Fatigue Life Management in Gas Turbine Engines", RTO-AVTP Workshop on Qualification of Life Extension Schemes for Engine Components, Corfu, Greece, October 1998, NATO Pub., RTO-MP- 17, AC/323(AVT)TP/7, March 1999, pp.4-114-9.
Suresh, S., Fatigue of Materials, 2nd Edn., 2003, Cambridge University Press.
Philip P. Walsh and Paul Fletcher., "Gas Turbine Performance", 2004, Blackwell Science Ltd.
Mishra, R. K., "TBO Life Extension of a Military Turbojet Engine by Sampling", International Journal of Applied Engineering and Technology, Vol.3 (4), October-December, 2013, pp.23-32.
Cohen, H., Rogers, G. F. C. and Saravanamuttoo, H. I. G., Gas Turbine Theory, Longman Group Limited, 1996.
Tony Giampaolo., The Gas Turbine Hand Book: Principles and Practices, 2nd Edition, Fairmont Press, Inc., 2003.
Ogaji, S. O. T, et. al., "Parameter Selection for Diagnosing a Gas-Turbine’s Performance-Deterioration", Applied Energy, Vol.73, 2002, pp.25-46.
Mishra, R. K., "Fouling and Corrosion in an Aero Gas Turbine Compressor", Journal of Failure Analysis and Prevention, Vol.15, No.6, 2015, pp.837-845, DOI: 10.1007/s11668-015-0023-8.
SAE Aerospace Information Report: Environmental Control System Contamination, SAE International, 2007, New York.
Meher-Homji, C. and Bromley, A., "Gas Turbine Axial Compressor Fouling and Washing", Proceedings of the 33rd Turbomachinery Symposium, 2004.
Brocklehurst, H. T., Priddin, C. H. and Moss, J. B., "Soot Prediction within an Aero Gas Turbine Combustion Chamber", ASME Paper No. 97-GT-148, 1997.
Xu, F., El-Leathy, A. M., Kim, C. H. and Faeth, G. M., "Soot Surface Oxidation in Hydrocarbon/Air Diffusion Fames at Atmospheric Pressure", Combustion and Flame, Vol.132, 2003, pp.43-57.
Lefebvre, A. H., Gas Turbine Combustion, Hemisphere Publishing Corp., 1983.
Mishra, R. K., Kishore Kumar, S. and Sunil Chandel., "Effect of Spray Cone Angle on Flame Stability in an Annular Gas Turbine Combustor", International Journal of Turbo and Jet Engines, ISSN (Online) 2191-0332, ISSN (Print) 0334-0082, DOI:10.1515/tjj-2015-0006, March 2015.
Li, L., Peng and Liu, T., "Combustion and Cooling Performance in Aero-Engine Annular Combustor", Journal of Applied Thermal Engineering 26, 2006, pp.1771-1779.
Zheng, Q. P., Jasuja, A. K. and Lefebvre, A. H., "Structure of Airblast Sprays Under High Ambient Pressure Conditions", Journal of Engineering for Gas Turbines and Power, Vol.119, No.3, 1997, pp.512-518.
Mellor, A. M., Design of Modern Turbine Combustors, Academic Press, London, 1990.