What's a good max Cl at low Reynolds numbers? [Archive]

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Flyingwingbat1

Dec 23, 2007, 10:47 AM

Hi all, I have some small flying wing gliders that fly at an RE= 6700 at the root. When I rearranged the lift equation to calculate for Cl, it came out to about 0.6. Is this good for the low RE? Bad? In between?

JetPlaneFlyer

Dec 23, 2007, 10:56 AM

Sounds about what you would expect for a flying wing operating at very low Re.

Flyingwingbat1

Dec 23, 2007, 01:09 PM

I suppose; but it still frustrates me that real planes have Cls up to 2.8 or so without blown flaps.

Darn Physics.