Rudder Turbulator Strips

[John Ferrell]

There were several who objected that the blunt trailing edge resulted in
more drag than a sharper edge.
I felt that the blunt edge was easier to construct and maintain uniformly
and that drag was not much of
a consideration on this particular model. Somewhere I read that racing
sailboats had blunt training edges
on the rudder to reduce the tendency of the surface to "hunt" under light
loading. I don't have any scientific
evidence to support that but Dave Guerin also liked blunt trailing edges so
we kept the recomendation.

I would not know where to start to find the equations to support either side
of the argument,
If you can't quantify it, you really don't understand it,
Therefore I really don't understand it.
Howerver, I do prefer it!

----- Original Message -----
From: "Dean Pappas" <d.pappas at kodeos.com>
To: <discussion at nsrca.org>
Sent: Tuesday, April 15, 2003 3:00 PM
Subject: RE: Rudder Turbulator Strips


Why?
Dean

-----Original Message-----
From: John Ferrell [mailto:johnferrell at earthlink.net]
Sent: Tuesday, April 15, 2003 2:34 PM
To: discussion at nsrca.org
Subject: Re: Rudder Turbulator Strips


The blunt trailing edges recieved a lot of criticism on the Prophecy.



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