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Old 14 December 2011, 10:49   #1
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Dimples

Was sent details of a rib today check out its unusual Hull

http://www.airhull.com/LH2Uploads/It...ize_resize.JPG

http://www.airhull.com/LH2Uploads/It...ize_resize.JPG

http://www.airhull.com/LH2Uploads/It...ize_resize.JPGhttp://<br /> <br /> http://www.yo...&v=Dam7ZS59X80http://www.youtube.com/watch?feature...&v=He_XJomox5U




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Old 14 December 2011, 11:05   #2
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A bit like the dimples on a golf ball which apparently reduce drag.
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Old 14 December 2011, 11:11   #3
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They make the ball climb on the air when the ball is spinning, however they also make the ball turn in the air if it's spinning left to right or right to left.

Hence, thats why golfers slice the ball.....
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Old 14 December 2011, 11:20   #4
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Quote:
Originally Posted by Polwart View Post
A bit like the dimples on a golf ball which apparently reduce drag.
So yes I think you're right, Water rushing over the dimples will cause the hull to lift and maybe feel more lighter???

Just a guess....
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Old 14 December 2011, 11:22   #5
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I seem to recall an America's Cup yacht using a similar surface (though much smaller dimples), maybe 20 years ago?

Mythbusters did an episode on a car using the dimple finish, and found it was actually effective at reducing drag (though in air.)


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Old 14 December 2011, 14:52   #6
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The dimples hold air so the hull has less friction on the water.
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Old 14 December 2011, 15:24   #7
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The dimples hold air so the hull has less friction on the water.
Clever idea must be hard for the tooling of the mold and to get a good lay up , have seen forced air under hulls to reduce viscous drag but never dimples and have seen shark skin swimsuits to reduce it also.

Very clever
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Old 14 December 2011, 16:02   #8
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Very interesting, never seen this before. Typically developments in planing hulls originates from racing boats, but don't know has dimples already been used there.

Will be interesting to see if similar constructions will be seen on other brands also at some stage.
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Old 15 December 2011, 08:42   #9
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Has anyone seen what happens when you hit a golf ball into a lake!!!!!!

Unfortunately, I have - on far too many occasions!
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Old 15 December 2011, 08:53   #10
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Has anyone seen what happens when you hit a golf ball into a lake!!!!!!

Unfortunately, I have - on far too many occasions!
Makes sense then - it becomes a 4-stroke
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