mean tailchord

From: Brett Sanborn <bsanborn_at_purdue.edu>
Date: Fri, 14 Jan 2011 10:09:06 -0500

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 - 07:08:57 CET