STABILITY OF SYMMETRICAL ROTOR SUPPORTED IN FLEXIBLY MOUNTED, SELF-ACTING GAS JOURNAL BEARINGS

This paper describes the results of numerical investigations of the st ability problem of the rigid symmetrical rotor, supported in two self- acting gas journal bearings. Bushes of the bearings are mounted on a s ystem of linear springs and viscous dampers. When the stiffness and da mping coefficients of these springs and dampers are chosen correctly, it is possible to avoid the self-excited vibrations of the rotor. Such vibrations, which are caused by the phenomenon of a hair-synchronic w hirl, are the major obstacle to the widespread application of gas bear ings.