3. The power transmission system from a diesel engine to a propeller for a ship is shown in simplified form below. The role of the fluid coupling is to transmit the main flow of power from the engine to the propeller shaft without allowing excessive vibration, which otherwise be caused by the pulsations of engine torque resulting from the cyclic firing of it cylinders. Sketch a free body diagram and write the EOMs for the system, in terms of angular displacement and the inputs. The Fluid Coupling is linear, Tc = C (0-0) and treat the driveshaft as an ideal rotational spring. j q Engine moving parts Fluid coupling Driveshaft (2 Propeller -Tw