Re: ARC radius airfoils question....long

From: William Gowen <wdgowen_at_gmail.com>
Date: Wed, 30 Oct 2013 11:03:12 -0400

My answer is I use the same airfoil for all ceiling heights.

On 10/30/2013 11:02 AM, nmonllor_at_tampabay.rr.com wrote:
>
> AArrg!
>
> 3 replies and still no answer to the question, dang it!
>
> Yes Gary, I should have said camber and not hump. I must have camels
> on the brain today or I'm just getting old, sorry.
>
> It's nice to know that I'm not the only one who finds this worthy of
> question.
>
> If anybody can come up with the answer, I'd really appreciate it.
>
> Thanks,
>
> Ren
>
> ---- Warthodson_at_aol.com wrote:
> >
> > Ren,
> > That is an interesting question. Sorry I do not have the answer, but
> I will add this to your question: Assuming one of the two airfoils
> will have a better L/D ratio, I would think the better L/D ratio would
> be the best choice for both a low & a high ceiling.
> >
> > Also, I do not understand your statement below. A 6% arch has a
> higher camber than a 4% arch. Is that what you are refering to? If
> not, what did you mean?
> >
> > Gary H
> >
> >
> > A smaller percentage would create a higher hump in the air foil
> increasing lift according to Bernulli, but yet it is suggested for a
> lower cieling. Whyis this?
> > What am I not seeing?
> >
> >
> >
> >
> >
> >
> >
> >
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Received on Wed Oct 30 2013 - 08:03:14 CET