Dynamic behaviour of a propulsion plant and its controller: with Hardware In the Loop

The shipping industry is forced to reduce its emissions and underwater radiated noise in order to decrease the impact on the environment and limit global warming. Moreover, a low acoustic signature can be lifesaving for a navy ship, especially during submarine on mine threats. To be able to operate as flexible as possible under these threats, a...

Development of a Combinator Curve Generator

Often, vessels have multiple operation modes that are specialised for a certain task. If a vessel is employed with a controllable pitch propeller(CPP), the blade pitch can be adjusted, adding a degree of freedom to the system. This advantage creates the possibility to increase the diversity of operation modes of the vessel and allows for...

Vessel propulsion modelling: a linear parameter varying approach

Clients and vessel manufacturers are always looking for ways to increase the performance of their fleet. Therefore, a novel modelling strategy for the propulsion plant of naval vessels is explored here. This has been done by using the Linear Parameter Varying (LPV) framework. On one hand, a non-linear description is needed to fully understand...

Wear and Friction in a Controllable Pitch Propeller

The author is a naval architect and this book is his PhD thesis. In this research the author focuses on friction in a controllable pitch propeller (CPP), formation of wear in a CPP system, and their mutual dependence. Instead of going deeply only in tribology aspects, the author tries to get an overall description of the problem incorporating...

Control of Propeller Cavitation in Operational Conditions

Off design conditions can have a severe impact on ship propulsion system behaviour. Resistance increase for instance leads to a higher engine loading, and can also easily lead to a decrease of cavitation inception speed with respect to calm water conditions. Wakefield variations due to ship motions, waves and manoeuvres also have effect on...