Planetary gear system arrangement with auxiliary oil system

A gas turbine engine comprising:

• a fan shaft driving a fan having fan blades;
• a gear system including a sun gear surrounded by a plurality of intermediate gear, a carrier at least partially supporting said plurality of intermediate gears, and a ring gear surrounding said plurality of intermediate gears, wherein said sun gear is driven by a turbine;
• said ring gear fixed from rotation relative to an engine static structure, a carrier supporting said at least one planetary gear, said carrier driving said fan;
• and
• a flexible coupling fixing said ring gear from rotation relative to an engine static structure;
• a lubricating system for said planetary gear train, said lubricating system including a stationary oil transfer bearing configured to receive lubrication for said lubricating system, and at least one gutter around an outer edge of said ring gear to collect lubrication used by said lubrication system;
• and
• a low spool for driving said fan via said planetary gear train;
• wherein said at least one gutter includes a forward gutter and an aft gutter located around an outer edge of said ring gear to collect lubrication used by said lubrication system;
• wherein said aft gutter is spaced radially from said forward gutter;
• and
• wherein said aft gutter is in fluid communication with said forward gutter through an axially extending passage in said ring gear.