Modelling width of the spectral component of a gas-turbine engine gearbox output shaft speed


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Abstract

Gearbox is the most stressed component in an aircraft gas-turbine engine. This implies the need for finding ways to monitor its technical condition. Practice shows that the most efficient method is vibration-based diagnostics. However, this method requires the use of sophisticated measurement systems and highly skilled personnel. This paper shows that errors of gear coupling manufacture and assembly, characteristics of machine operating mode, design factors, frequency modulation of the carrier of the engine rotor speed in the stationary mode of its operation, and wear of teeth flanks determine the width of the spectral component of the gearbox output shaft speed. Using the results obtained from the developed model of the width of gear tooth spectral component, ratios for width of the spectral component of the signal of the “standard” tachometric speed sensor of the gearbox output shaft speed and the corresponding spectral component of its vibration were obtained. Models for repaired and newly manufactured gearboxes and gearboxes with tooth flank wear were proposed. This allowed the development of a number of new diagnostic indicators of a defect. Several examples of the use of these new diagnostic indicators are given for the gearbox of one of turbo-prop engines. The results obtained provide an opportunity to assess the gearbox technical condition in operation.

About the authors

A. E. Sundukov

PKF TSK, LLC

Author for correspondence.
Email: sunduckov@mail.ru

Candidate of Science (Engineering), Engineering Director

Russian Federation

E. V. Shakhmatov

Samara National Research University

Email: shakhm@ssau.ru

Academician of the Russian Academy of Sciences, Head of the Department of Power Plant Automatic Systems

Russian Federation

References

  1. Kravchenko I.F., Edinovich A.V., Yakovlev V.A., Dorofeev V.P. Experimental and theoretical results of the research of aircraft gears. Aerospace Technic and Technology. 2008. No. 8 (55). P. 129-134. (In Russ.)
  2. Kurushin M.I., Balyakin V.B., Ossiala V. Nvestigation of the torsional vibrations of a rotor turbine engine with a differential reduction gearbox. Journal of Dynamics and Vibroacoustics. 2018. V. 4, no. 2. P. 27-42. (In Russ.). doi: 10.18287/2409-4579-2018-4-2-27-42
  3. Genkin M.D., Sokolova A.G. Vibroakusticheskaya diagnostika mashin i mekhanizmov [Vibroacoustic diagnostics of machines and mechanisms]. Moscow: Mashinostroenie Publ., 1987. 288 p.
  4. Avramenko A.A., Kryuchkov A.N., Plotnikov S.M., Sundukov E.V., Sundukov A.E. Refining methods of vibration diagnostics of wear of turbo-prop engine differential speed reduction unit gear teeth. Vestnik of Samara University. Aerospace and Mechanical Engineering. 2018. V. 17, no. 3. P. 16-26. (In Russ.). DOI: 10. 18287/2541-7533-2018-17-3-16-26
  5. Kurushin M.I., Balyakin V.B., Kurushin A.M. Experimental investigation of the courses of vibration excitation of elements of gas turbine engines with a differential reduction gearbox. Izvestiya Samarskogo Nauchnogo Tsentra RAN. 2014. V. 16, no. 4. P. 132-136. (In Russ.)
  6. Shevyakov A.A. Avtomatika aviatsionnykh i raketnykh silovykh ustanovok [Automation of aircraft and rocket power plants]. Moscow: Mashinostroenie Publ., 1970. 660 p.
  7. Abramov B.M. Research of the stability of periodic vibrations. Izvestiya Vuzov. 1963. No. 5. P. 5-12. (In Russ.)
  8. Sheveleva G.I. Teoriya formoobrazovaniya i kontakta dvizhushchikhsya tel [Theory of shaping and contact of moving bodies]. Moscow: Stankin Publ., 1999. 494 p.
  9. Kozharinov E.V., Kalinin D.V., Golovanov V.V. Reduction of aviation gear’s vibration. Aviation Engines. 2020. No. 1 (6). P. 57-64. (In Russ.) doi: 10.54349/26586061_2020_1_57
  10. Sundukov A.E., Shakhmatov E.V. Model of the turboprop engine reduction gear tooth harmonic spectral component. Vestnik of Samara University. Aerospace and Mechanical Engineering. 2023. V. 22, no. 4. P. 135-144. (In Russ.). doi: 10.18287/2541-7533-2023-22-4-135-144
  11. Avramenko A.A., Kryuchkov A.N., Plotnikov S.M., Sundukov E.V., Sundukov A.E. Using signals from the gas-turbine engine shaft speed sensor in the diagnosis of the technical condition of its reduction gearbox. Vestnik of Samara University. Aerospace and Mechanical Engineering. 2020. V. 19, no. 1. P. 7-17. (In Russ.). doi: 10.18287/2541-7533-2020-19-1-7-17
  12. Sundukov A.E., Sundukov E.V., Bit-Zaya A.V., Roslyakov A.V. Evaluation of the width of the discrete components of the spectrum of vibration energy machines. Izvestiya Samarskogo nauchnogo tsentra RAN. Spets. vypusk «Problemy zheleznodorozhnogo transporta na sovremennom etape razvitiya». 2006. P. 194-197. (In Russ.)
  13. Sokolov G.A., Sagitov R.V. Vvedenie v regressionnyy analiz i planirovanie regressionnykh eksperimentov v ekonomike: ucheb. posobie [Introduction to regression analysis and designing regression experiments in economics]. Moscow: INFRA-M Publ., 2010. 202 p.

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