METHOD FOR PERFORMANCE OF TOWING MODEL TESTS OF VESSELS IN ICE EXPERIMENTAL POOL

摘要

FIELD: testing equipment.;SUBSTANCE: invention is related to the field of experimental tests performance on models of ice breakers and ice ships in ice experimental pools. Method includes preparation of modeled ice field. Performance of model tests by means of its towing with a specified speed of v_m. Registration of frequency of submerged ice debris ingress into propelling-steering complex, to ice boxes of ship model and to other external devices on model body with availability or absence of ice protection on model body. Density of modeled ice is identified as . In non-damaged ice cover they tow model of ship with a speed detected by ratio , where: ν_m and ν_f - speeds of model and full-sized vessels accordingly, λ is model scale. Average size of produced ice debris and channel width are measured behind model. In non-damaged ice field in front of vessel in width equal to width of channel behind model, ice cover is cut into separate adjacent ice floes. Size of ice floes equals measured average size of ice debris. Model towing in process of specified tests is carried out with speed ν'_m, which is reduced in comparison with ν_m, which is identified by ratio ,;where: ρ_w - water density, - ice density required by technical task for performance of experiments.;EFFECT: provides for valid test results.;1 dwg