On the issue of determining the ice failure resistance by air cushion platforms

Low speeds, high pressures and non-self-propelled are the distinctive features of icebreaking air cushion platforms. A small number of works have been devoted to the study of the platforms interaction with solid ice cover. In the article, various methods of calculating the resistance components, a graphical analysis of comparison with the data of full-scale tests are considered. The study is based on the principle of resistance separation into components, each of which was considered separately. To clarify the resistance component formula, model experiments were carried out. The volume of research has allowed to obtain the empirical formula for calculating resistance in clear water with the required reliability and accuracy. In the study of the resistance component to the ice cover failure, the resistance to the movement of an arbitrary pressure field on the base of an arbitrary relief was considered. It was believed that the edges of such a dome rest on the base without cracks. The numerical problem solution allowed to propose a dependence for calculating the fracture resistance. Finally, after clarifying all the components, the dependence of the calculation of resistance in a solid ice cover is proposed and comparison graphs with full-scale data are presented.