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Old January 28th 07, 04:15 AM posted to rec.aviation.misc
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Default What angle creates MAXIMUM air deflection?



On Jan 27, 9:52 pm, Brian Whatcott wrote:
On 27 Jan 2007 18:22:44 -0800, wrote:

Thanks, Brian. No, this has nothing to do with airfoils or lift. The
"airplane wing" model doesn't hold here. Drag, lift, etc. are not
relevant. The ONLY effect we need to produce is to deflect the
oncoming wind as far outward as possible.


Bill S.Got it. Lift isn't relevant - just deflecting as much air mass as

possible. :-)

Brian Whatcott Altus OK


OK, don't make fun of me here!!! Lift also requires convex curvature
on the top, doesn't it? That's not the case here. This is just a flat
piece of Lexan, nothing else. Also the deflection isn't vertical,
it's horizontal. You're looking DOWN on it in the graphic above. That
"surface AB" in the graphic is looking down on the plastic "edgewise."
I just want to know what angle to set it to maximally deflect the air.
Can you tell me, or not?

Bill S.