대용량 추진 전동기용 베어링 개발에 대한 연구

The paper examines the propulsion motor journal bearing using the experiment method which, based on an ARMD(Advanced Rotating Machinery Dynamics) S/W and a similitude design method. The bearings were insulated electrically and have a low thermal conductivity of an epoxy plate structure consist of a 2 to 4 ㎜ thickness deposited over each connection part. This design was compared to other conventional design structure with an available low cost material. The temperature results were satisfied comparing to the previous journal bearing. Excellent lubricating characteristics of oil films, partially due to the use of the enhanced oil lift system. Industrial repair and convenient maintenance of this journal bearing is also possible by applying to half separation assembly structure.