--- Dave Culp < wrote:
> Using a
> chart
> like this one:
>
> http://home.comcast.net/~davidculp2/groundeffect.png
>
> We see that ground effect starts at a height of about one wingspan.
Hi Dave,
So, here my ignorance of aerodynamics comes to the fore: Why does ground
effect reduce drag?
I thought it only affected lift?
I know that the Reno-racers try to get as low as possible for extra speed,
but thought it was purely so they could use a lower angle of attack.
Does the higher pressure under the wing clean up turbulence behind the
aircraft?
-Stuart
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