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Using signals from the gas-turbine engine shaft speed sensor in the diagnosis of the technical condition of its reduction gearbox
- Authors: Avramenko A.A.1, Kryuchkov A.N.1, Plotnikov S.M.1, Sundukov E.V.2, Sundukov A.E.3
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Affiliations:
- Samara National Research University
- JSC Kuznetsov
- Turbine-SK LLC
- Issue: Vol 19, No 1 (2020)
- Pages: 7-17
- Section: AIRCRAFT AND SPACE ROCKET ENGINEERING
- URL: https://journals.ssau.ru/vestnik/article/view/7766
- DOI: https://doi.org/10.18287/2541-7533-2020-19-1-7-17
- ID: 7766
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Abstract
It is shown that analyzing the signals from “standard” sensors of gas-turbine engine shaft speed we can resolve some issues of diagnostics of the technical condition of the reduction gearbox without installing any additional vibration transducers. It was found, in particular, that the vibration spectrum component generated by the wear of the differential reduction device’s gear teeth causing resonant oscillations of the turbocharger blades produces torsional vibration at the appropriate frequency. The analysis of the parameters of the instantaneous rotational speed of the reduction gear output link (the shaft of the rear screw) made it possible to obtain some diagnostic indicators of the value of the reduction gear teeth wear on the basis of evaluation of the frequency deviations’ variance. It was established that the value of the diagnostic indicator is linearly dependent on the value of wear. The norm for this indicator was established for the engine under investigation. Significant influence of the load on its level was shown.
About the authors
A. A. Avramenko
Samara National Research University
Author for correspondence.
Email: avramenko@ssau.ru
Candidate of Science (Engineering),
Professor of the Department of Theoretical Mechanics
A. N. Kryuchkov
Samara National Research University
Email: kan@ssau.ru
Doctor of Science (Engineering),
Professor of the Department of Power Plant Automatic Systems
S. M. Plotnikov
Samara National Research University
Email: s_plotnikov@hotmail.com
Graduate Student
Russian FederationE. V. Sundukov
JSC Kuznetsov
Email: sunduckov@mail.ru
Candidate of Science (Engineering),
Head of the Integrated Research Laboratory
A. E. Sundukov
Turbine-SK LLC
Email: motor@kuznetsov-motors.ru
Candidate of Science (Engineering),
Director
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