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Abstract <p>A foil gas-dynamic bearing with an additional supporting layer of damping leaf foils is considered. Its load-bearing capacity is analyzed in comparison with second- and third-generation foil gas-dynamic bearings. Experimental dependences of the ultimate load-bearing capacity on load and rotational speed are obtained. It is established that the studied bearing provides a load-bearing capacity level corresponding to the lower limit of second-generation bearings, while simultaneously increasing the resistance to rotor vibrations due to internal damping. The potential for this design to be used in small-sized gas turbine units is demonstrated.</p>

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Comparison of the Load-Bearing Capacity of Foil Bearings with a Supporting Layer with Foil Gas-Dynamic Bearings of the Second and Third Generations

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • M. P. Bulat,
  • S. I. Sigachev

摘要

Abstract

A foil gas-dynamic bearing with an additional supporting layer of damping leaf foils is considered. Its load-bearing capacity is analyzed in comparison with second- and third-generation foil gas-dynamic bearings. Experimental dependences of the ultimate load-bearing capacity on load and rotational speed are obtained. It is established that the studied bearing provides a load-bearing capacity level corresponding to the lower limit of second-generation bearings, while simultaneously increasing the resistance to rotor vibrations due to internal damping. The potential for this design to be used in small-sized gas turbine units is demonstrated.