Determination flank clearance of gears of a planetary gearbox as a vibration source in a gas turbine engine using a standard tachometer signal

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Abstract

It is demonstrated that the analysis of signals from the “standard” tachometric sensors of the input and output shafts of the GTE planetary gearbox enables assessing the toothed gearing backlash value in the “sun gear – pinion gears” pair. The possibility of identifying trends in the changes of high-frequency components that carry information on the technical condition of the gearbox is established. The results obtained significantly simplify the procedure for monitoring the technical condition of the gearbox by the studied parameter under operating conditions.

About the authors

Aleksandr E. Sundukov

PKF TSK JSC

Author for correspondence.
Email: sunduckov@mail.ru

Candidate of Science (Engineering), CTO of PKF TSK JSC

Russian Federation, Samara

Evgeniy 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 named after Academician of the Russian Academy
of Sciences Vladimir Pavlovich Shorin

Russian Federation, Samara

References

  1. Kryuchkov, A. N., Plotnikov, S. M., Sundukov, A. E. and Sundukov, E. V. (2020), “Vibration diagnostics of lateral clearance value in the toothed gearing of differential gearbox of a turboprop engine”, Aerospace MAI Journal, vol. 27, no. 3, pp. 198-208. (In Russian)
  2. Genkin, M. D. and Sokolova, A. G. (1988), Vibroakusticheskaya diagnostika mashin i mekhanizmov [Vibroacoustic Diagnostics of Machines and Mechanisms], Mashinostroyeniye Publishing House, Moscow, 288 p. (In Russian)
  3. Nerazrushayushchiy kontrol'. Spravochnik v 7 tomah. Tom 7, kniga 2. Vibrodiagnostika [Non-Destructive Testing: A Reference Book in 7 Volumes. Book 2. Vibration Diagnostics] (2005), ed. by V. V. Klyuyev, Mashinostroyeniye, Moscow, 829 p. (In Russian)
  4. Avramenko, A. A., Kryuchkov, A. N., Plotnikov, S. M., Sundukov, E. V. and Sundukov, A. E. (2020), “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, V. 19, no. 1. pp. 7-17. doi: 10.18287/2541- 7533-2020-19-1-7-17. (In Russian)
  5. Kryuchkov, A. N., Plotnikov, S. M., Sundukov, A. E. and Sundukov, E. V. (2019), “Simulation model of oscillations of the “sun gear – satellites” pair of turboprop engine planetary reduction gearbox in the presence of defects of tooth flanks”, VESTNIK of Samara University. Aerospace and Mechanical Engineering, vol. 18, no. 4, pp. 87-95. (In Russian)

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