Marine propulsion study of planning small-class amphibious vehicles

The authors analyze the propulsion of the planing hulls of the various small-class amphibious vehicles. The magnitude of the resistance forces depending on the movement speed is determined experimentally. For the correct formulation of experiments and their results, the study of various models of the planing small-class amphibious vehicles must comply with the dynamic similarity of the viscous friction and gravity forces. To compare planning effect provided by the design features of various amphibious models a relative measure of the hydrodynamic qualities or its inverse value can be used. In this article, numerical simulation by means of software complex is conducted to determine the hydrodynamic properties of the different planing small-class amphibious models. To verify the adequacy and accuracy of the generated numerical model, a comparison of the computer simulation results with the data of the full-scale experiment is used. Propulsion performance is compared for amphibious models with different hull contours and additional equipment.