Correct Larry

David Mikesell
23597 N. Hwy 99
Acampo, CA 95220
209-609-8774
[email protected]
www.skyguynca.com
----- Original Message ----- 
From: "larry severson" <[email protected]>
To: "KRnet" <[email protected]>
Sent: Thursday, May 26, 2005 8:43 PM
Subject: Re: KR> ground effect


> At 07:48 AM 5/27/2005 +1000, you wrote:
> >I don't believe that the wing span is the determining factor.  Take a
> >glider with a 23 meter (75ft) wing span, there is no way your are in
> >ground effect at 12 m (37ft) of the ground.  Wing span, cord length, wing
> >loading and spead must be in the calculation (guessing).
> >
> >Not being an expert, and not needing to the scinentific reasons, just
> >nowing how to use it and/or deal with it is all I need know. :-)
>
> Sorry, but in both my classes in Aero in college, and during my training
as
> an airline pilot, ground effect starts at 1/2 the wing span. (Drag due to
> lift reduces by 1/2 at the 1/2 wing span height because the down flow off
> the aft part of the wing is cut off.)
>
>
> Larry Severson
> Fountain Valley, CA 92708
> (714) 968-9852
> [email protected]
>
>
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