An epicyclic gear train includes a carrier that supports star gears that mesh with a sun gear. A ring gear surrounds and meshes with the star gears. Each of the star gears is supported on a respective journal bearing. Each journal bearing includes an internal central cavity and at least one passage that extends radially from the internal cavity to a peripheral journal surface of the respective journal bearing. The epicyclic gear train has a gear reduction ratio of greater than or equal to about 2.3.
申请公布号
US2012238401(A1)
申请公布日期
2012.09.20
申请号
US201113340735
申请日期
2011.12.30
申请人
MCCUNE MICHAEL E.;PORTLOCK LAWRENCE E.;SCHWARZ FREDERICK M.
发明人
MCCUNE MICHAEL E.;PORTLOCK LAWRENCE E.;SCHWARZ FREDERICK M.