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Old 07-15-2008, 11:11 PM   #17 (permalink)
Xringer
Old Retired R&D Dude
 
Join Date: May 2008
Location: Woburn Mass USA
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Quote:
Originally Posted by gascort View Post
But... to be less serious, could someone please try this and post video?

I bet the window screen has at least 50% of the resistance of a plywood sheet at high speeds though. Seems like a lot of turbulence would be generated.

The grill blocks on our cars also push air up, over, and around a vehicle that has good aerodynamics. The semi - it doesn't matter where the air goes around - it's not good.
What kind of speeds are we talking about? Because, 50% is a big number..

Can't find much info about this on the web..

I think this "reduce by 40%" chart is most likely for a K-band dish
which has pretty large holes in it's mesh.
Whereas if we are talking about a window screen.. I would have to guess
it would say reduce by 20% at the most..
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