Email this article Calculated detuning from flutter and experimental validation of the energy method of its prediction in the blades of the GTE compressor
- Authors: Makarov P.V.1, Chepiga S.A.2, Voronin O.Y.2, Kolotnikov M.E.3, Vedeneev V.V.3, Abdukhakimov F.A.3
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Affiliations:
- Central Institute of Aviation Motors
- Salyut Machine-Building Association
- Lomonosov Moscow State University, Institute of Mechanics
- Issue: Vol 11, No 2 (2025): :27.06.2025
- Pages: 56-72
- Section: Articles
- URL: https://journals.rcsi.science/2409-4579/article/view/312416
- DOI: https://doi.org/10.18287/2409-4579-2025-11-2-56-72
- ID: 312416
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Abstract
The work is devoted to demonstrating the effectiveness of the energy method for predicting self-oscillations (flutter) using the example of a monowheel of the 1st stage of a low-pressure compressor of a gas turbine engine. Flutter was detected during engine tests by the monowheel strain gauge method and using contactless diagnostic tools. Using an engineering calculation technique based on the energy method, the monowheel was detuned from flutter by re-profiling the blades. The calculated distribution of the work of non-stationary aerodynamic forces on the elastic movements of the blade during the oscillation cycle according to its own shape allows the designer to focus on the contribution of certain areas of the blade during detuning from the flutter and minimize the loss of aerodynamic parameters. In this work, for the first time in the domestic engine industry, an experimental verification of the absence of a flutter of a computationally tuned compressor impeller was successfully carried out using the energy method when testing it as part of an engine. The developed technique makes it possible to obtain a significant economic effect from reducing the volume of tests and eliminating the risk of engine failure.
About the authors
Pavel V. Makarov
Central Institute of Aviation Motors
Author for correspondence.
Email: pvmakarov@ciam.ru
Candidate of Science (Engineering), Head of the Department
Russian Federation, Moscow, Russian FederationStanislav A. Chepiga
Salyut Machine-Building Association
Email: s.chepiga@uecrus.com
Head of the Design Bureau
Russian Federation, Moscow, Russian FederationOleg Y. Voronin
Salyut Machine-Building Association
Email: о.voronin@uecrus.com
Head of the Design Department
Russian Federation, Moscow, Russian FederationMikhail E. Kolotnikov
Lomonosov Moscow State University, Institute of Mechanics
Email: mekolotnikov@mail.ru
Doctor of Science (Engineering), Professor, Leading Researcher
Russian Federation, Moscow, Russian FederationVasiliy V. Vedeneev
Lomonosov Moscow State University, Institute of Mechanics
Email: vasily@vedeneev.ru
Doctor of Science (Phys.–Math.), Professor, Deputy Director of Research
Russian Federation, Moscow, Russian FederationFarrukh A. Abdukhakimov
Lomonosov Moscow State University, Institute of Mechanics
Email: afa_mech@mail.ru
Candidate of Science (Phys.–Math.), Researcher
Russian Federation, Moscow, Russian FederationReferences
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