Author(s): Andreas Mueller; Robert Ettema
Linked Author(s): Robert Ettema
Keywords: No Keywords
Abstract: The kinetic equations of motion of a 1:48-scale model hull of the USCGC icebreaker ship "Polar Star" were used to infer: the vertical components of ice forces exerted against the hull; the hull's vertical inertia force components; and, the hull's buoyancy and pitching moments. As a simplified but reasonable approximation, it was found that the dynamic behavior of an icebreaker hull moving at constant speed through a level ice sheet, of characteristic length can be considered as a forced oscillation of frequency. This was the principal frequency of the ice force cycle experienced by the hull.