bearing bracket for use in an epicyclic gearbox, epicyclic gearbox and method for facilitating hydrodynamic oil flow in a planetary gear bearing bracket

摘要

A journal bearing for use in an epicyclical gearbox including a non-circular shaped journal pin and a journal bearing body into which the non-circular shaped journal pin is disposed. The non-circular shaped journal pin configured to mimic the shape of the non-cylindrical shaped journal bearing body at least at a high pressure point exerted upon the non-cylindrical shaped journal bearing body during a high pressure event, thereby permitting a free flow of a lubricating fluid there between the non-circular shaped journal pin and the journal bearing body during the high pressure event. An epicyclical gearbox including the journal bearing and method of facilitating a hydrodynamic oil flow in the planet gear journal bearing.