GEARED TURBOFAN WITH NON-EPICYCLIC GEAR REDUCTION SYSTEM

A gas turbine engine (100) comprises a fan drive turbine (46) driving a shaft (108). The shaft (108) engages a gear reduction (105). The gear reduction (105) drives a fan rotor (102) at a speed that is less than the speed of the fan drive turbine (46). The gear reduction (105) is a non-epicyclic gear reduction.