Email this article Method for determining the confidence limits of errors in measured parameters of an inhomogeneous flow at the inlet of an aircraft gas turbine engine compressor
- Authors: Matveev V.N.1, Pestov D.V.1, Gataullina E.D.1, Mel'nikov S.A.1
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Affiliations:
- Samara National Research University
- Issue: Vol 11, No 2 (2025): :27.06.2025
- Pages: 97-110
- Section: Articles
- URL: https://bakhtiniada.ru/2409-4579/article/view/312419
- DOI: https://doi.org/10.18287/2409-4579-2025-11-2-97-110
- ID: 312419
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Abstract
To analyze the results of measuring the parameters of the inhomogeneous flow at the compressor inlet, a method has been developed for determining the confidence limits of the errors of these parameters. The proposed method makes it possible to determine the marginal errors of the total absolute pressure at various measuring points, as well as parameters characterizing pulsations and uneven flow at the compressor inlet. A distinctive feature of the developed method is the ability to account for both non-excluded systematic and random errors. Testing the method allowed us to recommend the number of atmospheric pressure measurements during the engine test in one mode. It was also possible to establish the possibility of reducing the error in determining the complex criterion for evaluating the heterogeneity of the flow, while increasing the accuracy class of the full pressure measuring instrument at various points in the cross-section at the compressor inlet.
About the authors
Valeriy N. Matveev
Samara National Research University
Email: matveev.vn@ssau.ru
Doctor of Science (Engineering), Professor, Professor of the Department of Theory of Aircraft Engines named after V. P. Lukachev
Russian Federation, SamaraDenis V. Pestov
Samara National Research University
Author for correspondence.
Email: pestov.dv@ssau.ru
Assistant Professor of Aircraft Engine Theory named after V. P. Lukachev
Russian Federation, SamaraElena D. Gataullina
Samara National Research University
Email: gataullina.ed@ssau.ru
Assistant Professor of Aircraft Engine Theory named after V. P. Lukachev
Russian Federation, SamaraSergey A. Mel'nikov
Samara National Research University
Email: melnikov.sa@ssau.ru
Assistant Professor of Aircraft Engine Theory named after V. P. Lukachev
Russian Federation, SamaraReferences
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