Subject: Re: baidarka Welcome Peter/lanceolate blade
From: Mark Starr (marks@mystic.org)
Date: Thu Mar 09 2000 - 07:00:02 EST
>> arching side forward. It would also greatly improve the efficiency to
>have
>> a rounder edge on the leading (downward) edge and a sharp edge on the
>> upward (trailing) edge. The would make the cross section some what
>> "airfoil" shaped. Though this would make the paddle unsymmetrical which
>may
>> be undesirable in hectic conditions in rough seas.
Dear Mr. Peter Chopelas and others,
I have a question about the airfoil shape described above, as I have no
engineering knowledge to work with. Given that the foil shape would be
moving sideways through the water (as opposed to an airplane wing, where
the foil heads directly into the air) does this mean that there is a
difference in pressure from the lower edge of the blade to the top of the
blade, and would the foil shape work in this orientation? Can this
pressure difference be detected over a 3.5" blade?
Thanks for any more information you can provide.
Sincerely,
Mark Starr
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