Evolution of gas lubricated bearings

The problem of stability and ensuring the reliability of high-speed turbomachines on gas supports is becoming increasingly relevant, due to the increase in speeds, and as a result of increasing loads. Gasodynamic bearings also meet the requirements of environmental friendliness of production, which is also an important factor at the moment. The reliability of all turbomachines is largely determined by the reliability of the sliding supports, the design of which is a rather complex scientific and industrial task, including a detailed study of the support structure itself, as well as nonlinear processes occurring in the structure under various operating conditions. This article is a review of the designs of gasodynamic bearings. A large number of works of domestic and foreign researchers are devoted to the design features of gas supports, the study of the processes occurring in these supports, as well as the modeling of these processes. The research direction can be divided into computational and experimental ones. Experimental studies are carried out on single samples, the design features of which are quite complex, which entails difficulties for describing the design model of such supports; the formulation of such models greatly simplifies the design itself, which entails a loss of the adequacy of the model. The tendency to simplify the model is also observed for computational studies. As a result, the construction of an adequate mathematical model that takes into account the design features and reflects the nonlinear relationships of the processes occurring in gas supports under various operating conditions is still relevant today. Further research will be devoted to this issue.