Investigation of the dynamic properties of engine fan titanium rotor blades in a high manoeuvrability aircraft in FOD aspect

• Autorzy: Szczepanik R.
• Języki publikacji: EN

Abstrakty

EN

A current problem concerning the use of military and civilian aircraft is the damage caused to turbine compressor blades by ‘foreign objects’. Here the term ‘foreign objects’ means small stones, pieces of metal, cement pitch, asphalt, etc., left on runways and taxiways. Foreign objects also include ice and iced lumps of snow as well as birds sucked into aircraft engine air ducts. All such objects pose a serious threat to proper engine operation. They are very harmful in two respects. One is the direct danger during flight when a bird or some other object is sucked into the engine. The other danger is in what might occur in later flights if the engine, especially the compressor and turbine blades, are not inspected for durability reassessment. This paper presents an analysis of how the size and distribution of defects on blade edges affect, the frequencies and fatigue strength of titanium blades in the first four stages of a high manoeuvrability jet engine fan (low pressure compressor). In particular, damaged high manoeuvrability aircraft fan stage rotor blades and measured natural vibration frequencies and logarithmic decrement of damping of high manoeuvrability aircraft fan titanium blades are presented in the paper.

Słowa kluczowe

EN

aircraft; combustion engines; turbine engines; engine diagnostic; blades

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 2
• Strony: 371--376
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Szczepanik R.

• Air Force Institute of Technology, Księcia Bolesława Street 6, 01-494 Warsaw, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Szczepanik, R., Witoś, M., Quality Assessment of Diagnostic of Non-Interference Discrete-Phase of Measuring Compressor Blades, Vibration XIX Conference, ICAS, Anheim 1995.
• [2] Rządkowski, R., Dynamics of Rotor Steam Turbine Blading. Part Two, Bladed Discs, Maszyny Przepływowe, Tom 22, Ossolineum, Wrocław 1998.
• [3] Gravett, P., Bellows, R., Dunyak, T., Herrmann, D., Hudal, S., The Foreign Object Damage Project of PRDA V HCF Materials and Life Method Program, Proceeding of the 4th National Turbine Engine High Cycle Fatigue Conference, 1999.
• [4] Duo, P., Noweli, D., Schofield, J., Assessment of Foreign Object Damage (FOD) to Aero Engine Blades, 9th National Turbine Engine HCF Conference, Pinehurst, A/C 2004.
• [5] Przysowa, R., Perz, M., Dzięcioł, E., Szczepanik, R., Monitoring of Turbine Blades Operation Using Microwave Motion Probe, 1st EVI-GTI Conference Proceedings, Barcelona 2004.
• [6] Chen, X., Foreign Object Damage on the leading Edge of a Thin Blade, Mechanics of Material, Vol. 37, pp. 447-457, 2005.
• [7] Engine High Cycle Fatigue (HCF) Conference. Dayton, USA 2005.
• [8] Nikhamkin, M., Voronov, L., Semenova, I., Foreign Object Damage and Fatigue Strength Loss in Compressor Blades, Proceedings of ASME Turbo EXPO 2008, Power for Land, Sea and Air GT2008, Berlin, Germany, ASME paper GT-2008-51493, 2008.
• [9] Rządkowski, R., Gnesin, V., Soliński, M., Szczepanik, R., Analiza niskoczęstotliwościowych sił działających na łopatki wirnikowe turbin gazowych, Wydawnictwo ITWL, 2012. (Analysis of Low Frequency Forces Affecting Rotor Blades of Gas Turbines, ITWL Publishing House, the book manuscript submitted for publishing in 2012).
• [10] Szczepanik, R., Rządkowski, R., Dynamic properties of aircraft engine rotor blades in various operating conditions, ITWL, Warsaw 2012.
• [11] Rządkowski, R., Drewczyński, M., Szczepanik, R., Dynamic Analysis of Rotor Blades in One-Pass Engines, ITWL Publishing House, Warsaw.