Coupling system for a star gear train in a gas turbine engine

A star gear train comprising:

• a sun gear rotatable by a shaft;
• a ring gear secured to a ring gear shaft;
• a plurality of star gears rotatably mounted in a star carrier and meshing with the sun gear and the ring gear;
• a torque frame extending from the star carrier;
• a carrier flexible coupling connecting the torque frame to a non-rotating mechanical ground;
• and
• an annular flange extending from the carrier flexible coupling to engage and limit displacement of the torque frame.

A mounting system for an epicyclic gear system, the mounting system comprising:

• a non-rotating mechanical ground;
• a torque frame comprising:
• an annular rim having a first face and a second face;
• a plurality of fingers extending from the first face of the annular rim, the plurality of fingers configured to engage the epicyclic gear system;
• a torque disk extending radially inward and axially afterward from the second face of the annular rim;
• and
• a torque head connected to the torque disk;
• a flexible coupling comprising:
• a carrier torque head coupled to the torque head of the torque frame;
• a mounting head connected to the non-rotating mechanical ground;
• and
• a plurality of segments extending between the torque head and the mounting head;
• and
• a deflection limiter engaging the torque frame and the flexible coupling to limit relative radial and circumferential movement between the deflection limiter and the torque frame.