In this paper, a herringbone grooved aerodynamic floating bush bearing is proposed and the instability of a rigid rotor supported by the proposed bearings is investigated, numerically and experimentally. The proposed floating bush bearing is flexibly supported by three- or four-layered foils with hemispherical bumps. Accordingly, it is expected that the rigid rotor supported by the proposed bearings will be able to rotate stably at higher speeds compared with conventional herringbone grooved bearings which are rigidly mounted on housing. It was found that the proposed floating bush bearing with 6 mm in diameter can stably support a rotor at more than 0.6 million rpm.

This content is only available via PDF.
You do not currently have access to this content.