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AERODYNAMICS OF SAILS

CODE 61220
ACADEMIC YEAR 2021/2022
CREDITS
  • 6 cfu during the 1st year of 9008 DESIGN NAVALE E NAUTICO(LM-12) - LA SPEZIA
  • SCIENTIFIC DISCIPLINARY SECTOR ING-IND/13
    LANGUAGE Italian (English on demand)
    TEACHING LOCATION
  • LA SPEZIA
  • SEMESTER 2° Semester
    MODULES This unit is a module of:
    TEACHING MATERIALS AULAWEB

    AIMS AND CONTENT

    LEARNING OUTCOMES

    The course proposes the physical and aerodynamic modeling of the sail propulsion and the sailing boat modeling. General principles of Physics and Fluid-dynamics are presented, giving also a correlation with sail materials and techniques for sails construction.

    AIMS AND LEARNING OUTCOMES

    The purpose of the module is to provide the general concepts of the fluid dynamic interaction of a sailing vessel in order to present the operating principle of a sailing boat.

    The fundamental concepts of fluid dynamics are introduced and then analyzed in greater detail in the specific application of aerodynamics and hydrodynamics so that the student can make design choices justified by the physics of the problem.

    The notions of hydrostatics allow the student to design a stable and safe boat.

    The hydrodynamic modeling will allow you to make design choices for the sizing of the appendages as well as determine the performance of the boat.

    The aerodynamic modeling defines the aerodynamic actions on the sail plan and allows to correctly dimension the sail plan.

    At the end of the course, the student will be able to evaluate the performance of a boat, evaluating the correct weight distribution and the sizing of all surfaces hit by the wind or immersed in water.

    TEACHING METHODS

    Theoretical lessons on the course topics by means of the slide show.

    Practical exercises for the evaluation of the static balance of the boat and the evaluation of the hydrodynamic and aerodynamic forces using Excel, Rhinoceros, Orca3D (or similar) software.

    SYLLABUS/CONTENT

    • Fundamentals of the operation of the sailing vessel

    • ​Fundamentals of fluid dynamics and mechanics

    • Elements of hydrostatics and stability

    • Hull hydrodynamics and modeling of hydrodynamic forces

    • Hydrodynamics of the appendices

    • Aerodynamics of the sail

    • The balance under sail and the performance of the boat

    • Sail plan and deck plan

    • Main maneuvers and equipment

    • Sail plan and sailing plan dimension

    RECOMMENDED READING/BIBLIOGRAPHY

    Fabio Fossati – Teoria dello yacht a vela – Polipress

    Fabio Fossati - Aero-hydrodynamics and the Performance of Sailing Yachts - Adlard Coles Nautical

    Course slides and computer material provided in the classroom

    TEACHERS AND EXAM BOARD

    Exam Board

    ANDREA RATTI (President)

    LUCA ANGELO DI LANDRO (President Substitute)

    GIUSEPPE SALA (President Substitute)

    PAOLO SCHITO (President Substitute)

    LESSONS

    Class schedule

    All class schedules are posted on the EasyAcademy portal.

    EXAMS

    EXAM DESCRIPTION

    First part: delivery of the ship weight list and static balance.

    Second part: discussion of the boat's design and related sizing choices of the sail plan and appendices with references to theoretical concepts seen during the course.

    ASSESSMENT METHODS

    Written + oral

    Exam schedule

    Date Time Location Type Notes
    03/02/2022 10:00 LA SPEZIA Orale
    24/06/2022 09:30 LA SPEZIA Orale
    24/06/2022 09:30 LA SPEZIA Laboratorio