Aircraft gas turbine engine having variable torque split counter rotating low pressure turbines and single direction of rotation booster aft of counter rotating fans

The assembly has a low pressure turbine with a flowpath and located aft of a high pressure spool (33). The low pressure turbine has counter rotatable low pressure inner and outer rotatable turbines. A single direction rotation booster has a row of booster blades connected to a low pressure outer shaft and axially located aft and downstream of a fan blade row (15).