161. The part shown in the illustration would be located between which of the following components of a modern geared turbine main propulsion unit

The illustrated flexible coupling connects turbine rotors to high-speed pinions, as indicated by the labeled 'Pinion Flange' and 'Turbine Flange'. This type of coupling transmits torque while accommodating misalignment and axial movement in a geared turbine propulsion system, which consists of turbine rotor, flexible coupling, high-speed pinion, reduction gears, bull gear, line shaft, and propeller.