Theoretical and experimental methods for determining characteristics of proximity systems supports high speed rotary

The main types of proximity supports high-speed rotary systems: operation, their advantages and disadvantages, application. Currently, the most common types of proximity supports the following: electromagnetic support, support a permanent magnet, gasostatic, gas-dynamic and hybrid. The theoretical and practical methods of their investigation. A high complexity of classical theoretical calculation based on the simultaneous solution of equations of gas dynamics and mechanics, which leads to the inability of the analytical solutions and therefore requires the use of numerical methods. This in turn introduces an additional uncertainty in the calculation step has, in addition to unavoidable in the initial assumptions equations. Ultimately, this calculation can be used as an evaluation and requires experimental validation mandatory, whereby the process gas strut design becomes iterative, and therefore costly. It is worth noting that even with a slight difference in the characteristics of high-speed rotary systems, such projecting required for each cycle. Based on the analysis of publications provides a method to simplify the problem and ways of further research.