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Old 05-18-2012, 04:17 PM
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Crumpp Crumpp is offline
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Quote:
Why decreased in max. level flght?
Inncrease the area of our lifting surface = more drag

If you know how to do sections, then you know the common expression in propeller blade element theory is Cb for chord length and our local section Drag is expressed as:

~D = 1/2pVb^2CbCD
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