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5th Jan 2011, 22:03

#20 (permalink)

cwatters

Join Date: Dec 2001

Location: England

Posts: 1,389

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Two thoughts...

1) Air pressure at sea level is around 2000 Lbs/sqft so is 85 Lbs/sqft really "high" in percentage terms (just 4%)?

2) Reynolds number. Big fast wings are more efficient than small slow ones.

Low Reynolds Number Airfoil Design

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