Analysis shows load-bearing capacity in foil bearings with a supporting layer in comparison to gas-dynamic bearings, suggesting enhanced vibration resistance.
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.
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Bulat et al. (2025) studied this question.
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