Looking down the leech, one can see that it is either a straight line from clew to head, or perhaps convex with a smooth arc, or maybe concave, or any combination of the above.. Sail design theory relies on a simple principle to enable sails to operate. viewed in cross-section, the top surface of the sail's wing-like structure is convex and therefore longer from front to rear than the flat bottom surface.. Home boat design forums > design > hydrodynamics and aerodynamics > monohull sailboat hull shape discussion in 'hydrodynamics and aerodynamics' started by ivanthefool, aug 2, 2014..
Sail shape sail twist sail design sail curvature . built in shape. built in shape is essential if the leech of the sail is to hold up and allow draught or curvature right to the head.. The principle subject of this discussion is rotating masts and the effect of the pressure distribution on their supported sail, including a discussion of the positive and negative aspects of round tapered masts verses wing shaped masts.. Stability, fundamentally, is what prevents a boat from being turned over and capsized. whether you are a cruiser or a racer, it is a desirable characteristic. a boat's shape, particularly its transverse hull form, has an enormous impact on how stable it is. this so-called "form stability" is one of.
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