Epicyclic gear reduction carrier and torque frame connection

A gas turbine engine comprising:

• a turbine section having at least one turbine rotor, a compressor section including at least one compressor rotor, and a propulsor, the at least one turbine rotor connected to drive an epicyclic gear reduction to in turn drive the propulsor at a slower speed than the at least one turbine rotor;
• and
• the epicyclic gear reduction including a sun gear for receiving a drive input from the at least one turbine rotor and having gear teeth engaging gear teeth on a plurality of intermediate gears, the intermediate gears mounted within a carrier, the teeth on the intermediate gears also engaging teeth on a ring gear;
• and
• the ring gear connected to drive a propulsor drive shaft to in turn drive the propulsor, and the carrier connected to static structure, with the carrier connected to the static structure through a torque frame, the torque frame connected to the carrier at a radially outer location through a splined connection.

A gas turbine engine comprising:

• a turbine section having at least one turbine rotor, a compressor section including at least one compressor rotor, and a propulsor, the at least one turbine rotor connected to drive an epicyclic gear reduction to in turn drive the propulsor at a slower speed than the at least one turbine rotor;
• the epicyclic gear reduction including a sun gear for receiving a drive input from the at least one turbine rotor and having gear teeth engaging gear teeth on a plurality of intermediate gears, the intermediate gears mounted within a carrier, the teeth on the intermediate gears also engaging teeth on a ring gear;
• one of the carrier and the ring gear connected to drive a propulsor drive shaft to in turn drive the propulsor, and the other of the carrier and the ring gear connected to static structure, with the carrier connected to either the propulsor drive shaft or the static structure through a torque frame, the torque frame connected to the carrier at a radially outer location through a splined connection;
• and
• wherein the splined connection has at least two splines on an inner periphery of the torque frame engaging with at least one spline on an outer periphery of the carrier.