|SCIENTIFIC DISCIPLINARY SECTOR||ING-IND/01|
This unit provides an overwiew on the design process of motor yachts, focusing on high speed craft and relevant design issues.
This units aims to complete the student skills in the naval architecture field through the study of advanced topics specifically concerning the preliminary phase of the design.
This unit aims to complete the student skills in the naval architecture field through the study of topics relevant to high speed craft, namely planing hull forms and surface piercing propellers.
Tranditional lectures (about 46 hours) and practical excercise on the Savitsky method (about 6 hours).
Definition of planing.
Resistance components of a planing craft.
Influence of the hull geometrical parameters on motion resistance.
Methods for the trim control of crafts.
Methods for the resistance prediction of a planing hull: systematic series, statistical methods, Savitsky method.
Cavitation and supercavitating propellers
Surface piercing propellers
Lecture notes are available on the website:
The following texts are suggested for further readings:
Principles of Naval Architecture, SNAME, 1988
SAVITSKY D. “Hydrodynamic Design of Planing Hulls”, Marine Technology, October 1964.
Blount D. L., Fox D.L. “Small Craft Power Prediction”, Marine Technology, Vol. 13, No. 1, Jan 1976.
Savitsky D., Brown P.W. “Procedures for Hydrodynamic Evaluation of Planing Hulls in Smooth and Rough Water”, SNAME, Hampton Road Section paper, November 1975.
Hadler J.B. “The Prediction of Power Performance on Planing Craft”, SNAME Transactions, 1966.
Faltinsen, O.. “Hydrodynamics of High-Speed Marine Vehicles.” (2006).
Savitsky, D., Morabito, M. "Surface Wave Contours Associated With the Forebody Wake of Stepped Planing Hulls." Marine Technology. 47. 1-16, (2010).
Gawn, R.W.L., Burrill, L.C. "Effect of cavitation on the performance of a series of 16 in. model propellers." Trans. RINA, 1957.
Newton, R.N., Rader, H.P. "Performance data of propellers for high speed craft." Trans. RINA, 103, 1961.
All class schedules are posted on the EasyAcademy portal.
The exam is oral.
It is based on questions on theory and on the discussion of the student assignment.
During the exam it will be assessed if the student has acquired the theoretical contents and the techniques illustrated during the lessons and into the class notes.