Gas-Dynamic Foil Bearings Application in High-Speed Turbines

Abstract

Authors present the general characteristics of the gas-dynamic foil bearings in the paper. The short analysis of the application and possibilities of using gas-dynamic bearings in turbo machinery, especially in the aspect of aviation technology were described. Authors also pointed out possible directions of development and gas-dynamic foil bearings application in high-speed turbines, especially working in high temperature.

Analysis of the bearing nodes loads of turbine engine at an unmanned helicopter during a jump up and jump down maneuver

“…Gas bearings are currently mostly used in the temperature range up to 300°C and cryogenic applications. However, the highest operating temperature that was observed by [5], amounts to 815°C. Operating temperature of foil gas bearings depends directly on the used materials and sliding coatings.…”

“…Operating temperature of foil gas bearings depends directly on the used materials and sliding coatings. The most common coatings are formed with polymer materials which protect the sliding foil surface against wear [5]. However, load capacity of gas bearing, is even worse, so it's important to use rotating assembly with normal overloads.…”

Longitudinal–Torsional Ultrasonic Grinding of GCr15: Development of Longitudinal–Torsional Ultrasonic System and Prediction of Surface Topography

“…Rolling bearings have the ability to withstand radial loads and single-direction longitudinal loads in rotating mechanisms and are widely used in the aviation and automotive industries and other fields [ 1 , 2 , 3 ]. The bearing ring is the key component of the rolling bearing.…”