LEARNING OUTCOMES

The course will cover the following topics: Engine-propeller matching for design and off design conditions, Marine waterjets performance maps, Selection criteria of the waterjet propulsion unit, Automation outline for propulsion systems with CP propellers and waterjets, Charter yachts rules for bilge system, Sizing of the main firefighting

AIMS AND LEARNING OUTCOMES

During the Ship Propulsion Plants module the operating principles of marine propulsion for different types of yachts will be presented, with particular attention to the aspects related to dynamics and control. The theoretical / methodological and practical aspects will be illustrated, emphasising advanced design and numerical / implementation aspects.

PREREQUISITES

Knowledge of static methods for the design of marine propulsion. Basic knowledge of the principles of naval architecture. Principles of programming.

TEACHING METHODS

Classroom lectures and exercises, Industry expert workshops and educational visits.

SYLLABUS/CONTENT

1. Combined Propulsion Plants. Gas turbines. Electric motors. 4T Diesel engines. Nomenclature. Layout. Applications. Rules and impact on the ship design.
2. Controllable pitch propellers. Introduction. Open water diagrams. Four quadrants propeller model. Engine- CPP Matching. Blade moving mechanism and hydraulic system. Combinator tables.
3. Off design conditions. Freewheel propeller. Locked propeller. Flexible operating profiles. Navigation in rough sea.
4. Waterjet. Working principle. Fundamental waterjet equations. Performance diagrams. Matching with prime movers.
5. Surge motion equation. Fundamental equation. Examples.
6. Shaftline equation. Fundamental equation. Examples.
7. Simulation techniques. Classification. Marine engineering applications. Hardware in the loop.  
8. Ship propulsion modelling. Numerical modelling of propellers and engines. Holistic ship modelling. Analysis of the dynamic response in open loop.
9. PID controller. Theory. Coefficients assessment. Examples.
10. Propulsion simulation. Propulsion control system architecture. Shatfline revolution control. Ship speed control.
11. Assignments. Numerical exercises regarding the module topics.

The program may be modified during the course.

RECOMMENDED READING/BIBLIOGRAPHY

1. Course notes taken in class and material provided by the teacher
2. Marine Engineering - SNAME (ME)
3. RINA Rules for the classification of ships, RINA
4. J.Klein Woud, D. Stapersma, Design of Propulsion and Electric Power Generation Systems, IMarEST, London, 2002
5. Martelli M. (2015): “Marine Propulsion Simulation: Methods and Results”, Publisher: De Gruyter Open, Collection: engineering, pp. 1-104 
6. Fossen, Thor I. Handbook of marine craft hydrodynamics and motion control. John Wiley & Sons, 2011.