IMHO the intent is average chord which would be area divided by span for a complicated shape. There is a difference in "mean" and "average" so I'm not sure this is correct.
----- Original Message -----
From: Brett Sanborn
To: Indoor_Construction_at_yahoogroups.com
Sent: Friday, January 14, 2011 10:09 AM
Subject: [Indoor_Construction] mean tailchord
Don,
Long time listener first time caller.
In the design spreadsheet, how do we deal with the "mean tailchord" entry? For example, the maximum tail chord on my f1d is 5.25" but when I average the chord at the center and tip (since my stab is swept like a Coslick ezb stab) I get something like 3.8". Then when I try both of these values, I get a large difference in the static margin. My concern is that when I try the smaller "average" value, my static margin becomes negative.
How should I deal with the stab geometry in the spreadsheet?
Thanks,
Brett Sanborn
Received on Fri Jan 14 2011 - 08:49:15 CET
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