Ren,
I don't remember what you are building, and this will be only a partial answer. Sometimes a partial answer will smoke out a good answer from someone who really knows.
For an indoor duration model, use a rib curvature that gives a thickness that is 4 to 6 percent of the wing chord. Stabs are usually about 2% thinner than the wing - maybe 2 to 4 percent of the stab chord.
Fred Rash
From: Ren
Sent: Thursday, January 14, 2010 8:29 AM
To: Indoor_Construction_at_yahoogroups.com
Subject: [Indoor_Construction] Re: Dang it....
Thank you guys,
How do you figure out what percent of the cord is required?
Ren
--- In Indoor_Construction_at_yahoogroups.com, "jeffrey.hood" <jhood_at_...> wrote:
>
>
> Here is a link to a page with both the formula, and a calculator to make it easy...
>
> http://www.indoornews.com/custom/utilities/arc_calc.php
>
> JH
>
>
> --- In Indoor_Construction_at_yahoogroups.com, "Ren" <nmonllor_at_> wrote:
> >
> > I for got to post my second question...
> > when an airfoil is stated as a 3 or 4 dgree arc. How do I figure out what to draw on a plan.
> > I've seen that they are some how related the section of a circumference, but I don't know how to figure out what the curve would be when it is stated in degrees.
> > Could some one explain to me what the formula is???
> > Thank you,
> > Ren
> >
>
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