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Jim has been sailing in his new yacht. He notices that the boat seems to want to fall over in the wind. Jim realizes this is no good because he has a need for speed and all the wind in his sails is spilling out.
Jim takes action, he goes out an buys a huge rubber band (with internal diameter equal
to his masts) and saws his mast off at the base. Jim inserts the two sawn ends of his mast into the rubber band and applies super glue.
While out and about on the water Jim deals with the heel by pivoting his mast in the direction he requires.
Jim notices he is catching more wind so thinks about adding water balast or something (which is outside the AC 2003 rules).
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Yip, just like a windsurfer. I figure that the balast should be dynamic as well and not in the water. Maybe a weight on the end of another boom. |
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I guess if Jim had the time and the money he could fashion a ball and socket joint for the mast and incase it in a rubber sock as before. |
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Jim needs a Hobie cat, as it has a pivoting mast in a ball and socket. Or do you mean pivoting about a horizontal axis? That's trickier but doable, as the mast stays would need to be adjustable real-time somehow. |
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Jim should also forget about ballast which is just slowing him down and look into active hydrofoils to lift and level the hull... |
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I wonder if we can introduce some cryptographic technology to this invention, so that Jim can meet Alice and Bob. |
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I don't know much about sailing, but I was reading recently about a sail boat with a pivoting keel.
It was supposed to help balance against the boat capsizing. That coupled with this idea should make for a remarkably stable sail boat. |
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Jim is quite clearly mad. |
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Sail-pumping in low wind conditions on an AC yacht with a pivoting mast would require the whole crew! |
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when the wind is spilling out of the sails, simply change tack and let out a bit more sail... works well with r/c anyway |
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this has been done. Not with
the rubber band and super
glue, but a tilting mast with
the stays adjusted by
hydrolics. The idea was no to
reduce the sails by tilting
the mast, but to counter the
heel of the boat in windy
conditions. In a swingkeel
design the keel is swung to
one side using hydrolics, so
thqat the mast stays upright
and remains 100% effective. In
the swingmast design, only the
mast is swung windwards,
having the same effect. The
advantage is that the hull is
now heeled too, so that the
waterline is longer. A longer
waterline translates into a
higher (hull)speed.
It was some dutchman who
sailed this boat in 2002 or
2003 in some atlantic crossing
race. Can't remember his name
though. |
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