It's a valid test.  But "better" testing would be a few vacuum (they also
read a little bit of pressure) set up at strategic locations around the
test section.

While the holes might have more drag.. I bet the flat board causes a bigger
"high pressure" zone.

On Wed, Dec 31, 2014 at 12:33 AM, Adam Tippin via KRnet <
krnet at list.krnet.org> wrote:

> the only thing i could see as a variable, would be the wind traveling Up
> the windshield and possible skipping over some of the board.
> if the board is too short, you won?t have any results. Too tall may rip it
> off the roof.
> I can?t wait to hear the results.
>
> > On Dec 31, 2014, at 1:29 AM, Adam Tippin <adamtippin at gmail.com> wrote:
> >
> > it would seem at least sufficient for our application.
> > Is there a way to check resistance while the board with holes is in the
> stowed position?
> >
> >
> >> On Dec 30, 2014, at 7:17 PM, bjoenunley via KRnet <krnet at list.krnet.org
> <mailto:krnet at list.krnet.org>> wrote:
> >>
> >> Belly board holes or no holes;
> >>
> >> I have considered making a belly board with holes and one without
> holes. Attaching one at a time to a board where I can attach a scale.  I
> would then attach the system to the roof of my truck that I would drive
> down an unused road. I would measure the air resistance at varying speeds.
> >>
> >> Do you believe that this would accurately correlate to flight?
> >>
> >> Joe
> >>
> >>
> >>
> >>
> >
>
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