Re: Is there a simple way to lay out different camber arcs?

From: N Dennis <wombatt_at_gmail.com>
Date: Sat, 2 Apr 2016 12:52:12 -0400

Don, FWIW there is a app that plots a "simplex" foil of any asked for
camber at a 1" length on regular paper, then you can cut a template at any
length up to that with the same percent 'foil.

Not an arc, but an easy way to make 'foil templates.

wombat

On Sat, Apr 2, 2016 at 11:48 AM, dweigt47_at_gmail.com [Indoor_Construction] <
Indoor_Construction_at_yahoogroups.com> wrote:

>
>
> The MASH-UP model design for the EAA weekend used a wing and horizontal
> stabilizer with a 6% camber, a smooth arc of constant radius. The
> downloadable plan had them full size, which was helpful.
>
>
> I spent a long time working through the math to locate the center, to draw
> my own of the proper chord and camber. (It's been more than half a century
> since I had geometry and trigonometry courses!) This simple sounding
> specification isn't that easy to achieve! Is there a simple formula for
> determining the distance from the chord line to the arc's center, to draw
> any chord wing with a wide range of curvature, from flat to say 10%?
>
>
> Don Weigt
>
>
>
>
>
>
Received on Sat Apr 02 2016 - 09:52:14 CEST