METHOD OF DETERMINING SAFE SPEEDS OF HIGH-SPEED SHIP IN SHALLOW WATERS

摘要

FIELD: transport. ^ SUBSTANCE: invention relates to ship building, namely, to safe operation of, mainly, gliding ships in shallow waters. Proposed method consists in optimising hydrodynamic characteristics of small-scale towed dynamically similar ship model in test pool in shallow depth prepared by using submerged screen and measuring model motion parameters. When model moves from deep water to shallow water, variations in draft and pitch angle are measured. This allows using experimental and computation procedures to define character of variations in position model hull bottom point at speed and at known tolerable depth for ship in shallow water and to evaluate ranges of safe speeds that make one of the basic elements in instructions for ships control in coastal navigation at water edges and in shallow waters. ^ EFFECT: possibility to define safe speed of ship model in move from deep water to shallow water. ^ 9 dwg