Cruising Sailors Forum Archive

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• At what point between close hauled and dead down wind does a centerboard, or keel, stop lifting?
  • The centerboard resists the sideways force of the sails....
    • Great answer
  • I made a diagram some time ago that shows the forces
    • I took a real close look at this stuff when doing my article for PS.
      • Both of these 'theories' are WRONG
        • Huhh?
          • YUP! No viscosity, no lift.
            • Rich, are you saying that all of the aerodynamics diagrams that we've learned from are incorrect? Or are you saying that
              • YUP again.
              • compressible water?
              • Rich isn't really wrong
                • ALL of these theories are just convenient mathematical models to explain at physical phenomenon...
                  • Which is sort of my take
                  • Exactly and viscosity is simply a physical property of a fluid...
        • So, what creates the lift when you whack one billiard ball with another?
          • You cued the ball too low?