Description
Drawing on state-of-the-art performance testing techniques in wind tunnels and towing tanks, it provides invaluable new insights into how and why a sailing yacht behaves as it does. Fabio Fossati, a world expert in the field, has conducted years of research in wind tunnels, including work for several America’s Cup campaigns, and his results represent the latest knowledge on the subject.
This book presents a systematic analysis of the basic factors governing the behavior of a yacht under sail. Using simple mathematics and illustrating his findings with tables, graphs and helpful colour photographs, Fossati examines the principles of fluid dynamics applied to sailing yachts, and the main aerodynamics and hydrodynamic aspects that determine their behaviour under way.
From the latest research in aerodynamics and hydrodynamics right through to performance prediction, this book covers:
- Hydrodynamics of a sailing yacht – resistance components and scaling laws.
- Hull and keel forms – thin airfoil characteristics
- Sail aerodynamics – aerodynamic forces and moments
- Dynamics of a yacht – velocity, heeling effects, steering performance and stability
- Physical model testing – wind tunnels, towing tanks, scaling problems, close-hauled and downwind testing, sail plan optimisation, hull appendages
- Performance prediction – Velocity Prediction Programs, forces modelling, hydro and aerodynamic models
- Fluid mechanics
- Boat hydrostatics
- The ORC International Rating Rule
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