Author(s)

Z. Domachowski, W. Prochnicki & Z. Puhaczewski

Abstract

Sea waving is usually considered as the most important disturbance affecting the dynamics of the ship propulsion unit. In rough sea conditions it causes high amplitudes of torsional torques which lead to torsional vibrations of the elements of the propulsion system. In order to determine the influence of sea waving on the dynamics of the propulsion system a mathematical model of these disturbances and a mathematical model of their transformation into the fluctuation of the propeller torque have been elaborated. The dynamic processes of the propulsion unit as the response to these disturbances have also been calculated. Introduction During the investigations specia

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