Geared turbofan with independent flexible ring gears and oil collectors

A geared turbofan engine comprising:

• a fan rotatable about an engine axis;
• a compressor section compressing air and delivering the compressed air to a combustor where the compressed air is mixed with fuel and ignited to drive a turbine section that in turn drives the fan and the compressor section;
• a gear system driven by the turbine section for driving the fan at a speed different than the turbine section, the gear system including:
• a carrier attached to a fan shaft;
• a plurality of planet gears supported within the carrier, wherein each of the plurality of planet gears includes a first row of gear teeth and a second row of gear teeth supported within the carrier;
• a sun gear driven by the turbine section, the sun gear in driving engagement with the plurality of planet gears;
• and
• at least two separate ring gears circumscribing the plurality of planet gears, wherein each of the at least two separate ring gears are supported by a separate flexible ring gear mount from a plurality of flexible ring gear mounts each separately attached to an engine static structure that enables movement of the at least two separate ring gears relative to the engine static structure, and wherein one of the plurality of flexible ring gear mounts includes a first axially curved section with respect to the engine axis that extends forward of the at least two separate ring gears with respect to the engine axis and another of the plurality of flexible ring gear mounts includes a second axially curved section with respect to the engine axis that extends aft of the at least two separate ring gears with respect to the engine axis and each of the plurality of flexible ring gear mounts include an opening in communication with a gutter that directs captured oil to an oil collection system.