PARAMETERS AND CHARACTERISTICS OF A SINGLE-SUPPORT DRIVE SYSTEM WITH TAPERED AEROSTATIC BEARINGS

Authors

DOI:

https://doi.org/10.18372/0370-2197.2(107).20143

Keywords:

aerostatic bearing, single-support system, diaphragm, flow restrictor, gas lubrication, supply pressure, average clearance, laminar regime

Abstract

A theoretical analysis of a single-point drive system with aerostatic bearings is presented in this study, focusing on the selection and modeling of flow control devices, in particular, annular diaphragms. The paper derives a dimensionless operating parameter that relates the pressure drops between the lubricating film and the flow control device, taking into account the properties of the gas and the bearing geometry. A set of standardized formulas is used to determine the stiffness and lift coefficients for subcritical laminar flow conditions. The model takes into account the influence of conical bearing surfaces, which allows calculating radial and axial load capacities, as well as ultimate moment loads. The results demonstrate a significant dependence of performance on the average air gap and discharge pressure. Thus, the simultaneous adjustment of these parameters can increase the bearing load capacity by up to 24 times, while the practical functionality is maintained within a more limited range of approximately three times the variability.

Author Biographies

Oleksii Breshev, State University "Kyiv Aviation Institute"

PhD in Engineering, Department of Applied Mechanics and Materials Engineering, State University “Kyiv Aviation Institute”, Ukraine, 1, Lubomyr Huzar Ave., Kyiv, Ukraine, 03058

Pavlo Nosko, State University "Kyiv Aviation Institute"

Doctor of Technical Sciences, Professor, Professor of the Department of Applied Mechanics and Materials Engineering, State University “Kyiv Aviation Institute”, 1, Lubomyr Huzar Ave., Kyiv, Ukraine, 03058

Oleksandr Bashta, State University "Kyiv Aviation Institute"

PhD in Engineering, Associate Professor, Department of Applied Mechanics and Materials Engineering, State University “Kyiv Aviation Institute”, 1, Lubomyr Huzar Ave., Kyiv, Ukraine

Alla Bashta, National University of Food Technologies

PhD in Engineering, Associate Professor, Department of Health Products Technology, National University of Food Technologies, 68 Volodymyrska str. Kyiv, Ukraine, 01601, tel. 289-54-72

 Maksym Radko, State University "Kyiv Aviation Institute"

Graduate of higher education with a master's degree in specialty 131 “Applied Mechanics”, educational and professional program ”Applied Mechanics, Standardization and Quality Assessment of Technical Systems”, State University “Kyiv Aviation Institute”, 1, Lubomyr Huzar Ave., Kyiv, Ukraine, 03058, tel. 406-78-42

Volodymyr Herasymov, State University "Kyiv Aviation Institute"

Graduate of higher education with a master's degree in specialty 131 “Applied Mechanics”, educational and professional program ”Applied Mechanics, Standardization and Quality Assessment of Technical Systems”, State University “Kyiv Aviation Institute”, 1, Lubomyr Huzar Ave., Kyiv, Ukraine, 03058, tel. 406-78-42, E-mail: nau12@ukr.net

References

Allen, D. & Stokes, P. & Whitley, S. (1961). The Performance of Externally Pressurized Bearings Using Simple Orifice Restrictors. Asle transactions. 4. 181-196. DOI:10.1080/05698196108972430.

Breshev, V. E. Issledovanie vliyaniya na ustojchivost dvizheniya rabochih organov mashin sposobov prilozheniya vneshnej nagruzki [Tekst] / V. E. Breshev, A. E. Tretyak // Praci Luganskogo viddilennya Mizhnarodnoyi Akademiyi informatizaciyi. – 2007. – № 2 (15) Ch.II. – S. 10 – 12.

Faria, Marco. (2014). A Comparative Performance Analysis of Gas Lubricated Cylindrical and Elliptical Journal Bearings. International Review of Mechanical Engineering (IREME). 8. 901. DOI:10.15866/ireme.v8i5.2985.

Matsushita, Osami & Tanaka, Masato & Kobayashi, Masao & Keogh, P.s & Kanki, Hiroshi. (2019). Basics of Plain Bearings. DOI:10.1007/978-4-431-55453-0_2.

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Published

2025-06-17

How to Cite

Breshev, O., Nosko, P., Bashta, O., Bashta, A., Radko, Maksym, & Herasymov, V. (2025). PARAMETERS AND CHARACTERISTICS OF A SINGLE-SUPPORT DRIVE SYSTEM WITH TAPERED AEROSTATIC BEARINGS. Problems of Friction and Wear, (2(107), 32–39. https://doi.org/10.18372/0370-2197.2(107).20143

Issue

No. 2(107) (2025)

Section

Проблеми тертя та зношування

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