INFLUENCE OF THE ELECTRIC SHIPS’ DESIGN PARAMETERS ON THE PERFORMANCE OF THE «ZIGZAG» MANEUVER
https://doi.org/10.33815/2313-4763.2023.1-2.26-27.056-068
Abstract
The purpose of the research is to develop a method for assessing the influence of the design parameters of electric ships’ hull on maneuverability. Methodology. When maneuvering, all components of the propulsion systems operate in transient modes, significantly influencing one another. A comprehensive approach to the construction of a method for estimating maneuvering indices is substantiated. The analysis is based on a mathematical model of transient modes of ship propulsion systems. The main provisions of dynamic similarity theory are used. Results. Criteria of dynamic similarity are found, which significantly affect the maneuver capability indices. A method for assessing the quality indices of the «zigzag» maneuver performance has been developed. A comparative analysis of the effect of the electric ship hull elongation on the main maneuvering quality indices has been carried out. It is shown that with an increase in the length of the vessel up to 10%, the main indices in accordance with the Maneuverability Standards do not deteriorate. The performance of the electric power plant does not exceed the permissible limits. For the purpose of economic feasibility, elongation of the ship's hull within the specified limits is permissible. Scientific novelty. The main provisions used in the construction of the method for assessing the quality indices of the «zigzag» maneuver performance ensure its versatility. The transition to generalized dimensionless parameters makes it possible to cover a large class of vessels by research. Practical significance. The developed method of calculation enables us to evaluate the degree of deviation of electric ships’ maneuvering indices when additional inserts are introduced into the ship's hull. It becomes possible to predict the maneuvering properties of modernized ships. Bibl. 15 tab. 3, fig. 5.
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