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MAC and Y mac for double tapered wing

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Eduardo Fadul

Well-Known Member
Joined
Jun 21, 2010
Messages
74
Location
São Carlos, SP - Brazil
Good morning to all

I'm evaluating a collegue Thesis and I have a question.

She was trying to determinated the MAC and Y Mac according to USAF - Datcom (Double-delta and cranked Wing page 2.2.2-4) however the values doesn't fit.

Untitled.jpg

Doing the math it gives:

Mac of the whole wing = 7.8841 ft
Y mac = 16.866 ft

but doing the CAD that MAC lies around 20.13 ft :ponder: :ermm:

So I'd like to know it there is another way to determinate that MAC and Y Mac for double tapered wing.



Thanks in advance
 
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