Ring gear mounting arrangement with oil scavenge scheme

A gas turbine engine comprising:

• a fan section including a fan supported on a fan shaft;
• a turbine section including a turbine shaft;
• an epicyclic gear train interconnecting the fan shaft and the turbine shaft, the epicyclic gear train comprising:
• a gutter having an annular channel;
• a sun gear rotatable about an axis;
• intermediary gears arranged circumferentially about and meshing with the sun gear, and a carrier supporting the intermediary gears;
• a ring gear arranged about and intermeshing with the intermediary gears, the ring gear having an aperture axially aligned with the annular channel with respect to the axis;
• and
• wherein the ring gear includes axially spaced apart walls that extend radially outward to define a passageway, and the passageway is arranged radially between and axially aligned with the aperture and the annular channel such that the walls inhibit an axial flow of an oil passing from the aperture toward the annular channel with respect to the axis.