Development of a Novel Test Apparatus for the Evaluation of an Active Geometry Tilting-Pad Thrust Bearing

Abstract

The paper outlines the design of a novel test apparatus for the evaluation of an active geometry tilting-pad thrust bearing (AGTPTB). The primary objective of the AGTPTB is to minimise viscous shearing losses of the thin lubricant film whilst maintaining reliable operation. Conventional hydrodynamic thrust bearing test rigs usually lack provisions for active systems due to the space required for actuation mechanisms and data acquisition from various sensors. The proposed equipment employs a horizontally loaded bearing, enabling the inclusion of actuation mechanisms at the rear of the bearing. Data acquisition includes monitoring power loss, speed, bearing load, lubricating film thickness and temperature. A test cycle is discussed, which includes variations in speed, applied load, oil supply temperature and lubricant flow rate. It is planned to compare performance data collected from an active bearing and its conventional counterpart.