期刊名称：Scientific Journals of the Maritime University of Szczecin
印刷版ISSN：1733-8670
电子版ISSN：2392-0378
出版年度：2005
卷号：6
页码：22-37
语种：English
出版社：MUS
摘要：The fundamental fact about manoeuvring of geometrically similar ships,of whatever length (or size) and initial steady approach speed,including scale physical models and the whole series of full–scale ships (if they really exist),is that the nondimensional track (in ship length units),the drift angle and the nondimensional yaw velocity are maintained.The only difference is the allocation of time moments to subsequent ship positions and/or heading.The higher is the speed and the shorter is the hull length,the time 'runs'faster.The present paper deals with a methodical explanation of these phenomena in view of building the manoeuvring model for a virtual ship of arbitrary size.Problems with satisfying the similarity of propeller parameters,the occurrence of scale effect in the resistance coefficient,and the consequences of variation in the ratios of main dimensions are analysed against the increasing ship length.
其他摘要：The software for filtering roughness of the profile of the surface of unprinted and printed paper was developed which allows receiving filtered profilograms to exclude in the profile the negative impact of the factors such as interference and errors caused by random vibration of equipment.
