Re: [Paddlewise] What a drag

From: 735769 <735769_at_ican.net>
Date: Thu, 23 Sep 1999 10:39:04 -0400
(SNIP)
>
>John, could you explain how heeling could improve speed?  It seems to me
>like it would be an inefficient action.  Wouldn't it, to some small degree,
>make the boat 'zig-zag' just a little bit?
>

I didn't say heeling would improve net speed, what I said was that the form
might get improved. For example, a boat with too high a prismatic
coefficient for lowest resistance at a given speed might have a lower
prismatic when heeled and so, would less resistance. As for net resistance
resulting from all factors, that includes many variables. Heeling need not
cause zig-zagging. Some people heel their boats to keep them going straight
without using corrective strokes (this works particularly well with some
solo canoes).

Just as I am not convinced that the blanket statement that heel causes more
resistance has validity in all cases so am I not sure that heeling will
reduce resistance in all cases. I provided the comment example to suggest
how the former statement might not apply.

Complicated, I know. Like a designer friend once said, "I am not sure I
understand everything I know about that."


Cheers,
John Winters
Redwing Designs
Web site address, http://home.ican.net/~735769



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Received on Thu Sep 23 1999 - 08:06:01 PDT

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