Design of ship-engine-propeller simultaneous matching and development of a propeller and engine selecting system

Abstract

A process to design ship-engine-propeller simultaneous matching is proposed in

this paper. The design process treats the whole system as an assembly of the ship-propeller subsystem and the engine-propeller subsystem in which relationships between rotational speed of the propeller and advancing speed of the ship are found and expressed as N-V curves. Furthermore, databases of propellers and engines are established and connected to self developed user interface to calculate simultaneous matching conditions in loops and the matching points are collected to form a selection pool where user can conduct selection. An example to select a propeller and an engine for a 25,000t bulk carrier using the developed selecting system is described and the outputs are listed and analyzed. The selected pair of the propeller and the engine is efficient and comprehensive compared with other instances in the

databases.