Thread: Kammback size?
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Old 01-18-2013, 08:34 PM   #15 (permalink)
ennored
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Quote:
Originally Posted by aerohead View Post
The analog clock face represents a 3-D ... occurs 115-degrees downstream,at 4-seconds after....
The 115 point is 25 after the 90 top (or bottom). That's just past 4 seconds (4.17 actually). So the 4 second circle I made in my graph is close to that. Hmmmm.

I did a little more playing, the curve of the template follows almost exactly a 6 second circle until about halfway down the template. Given that a truncated boattail is nearly as effective as a full one, that critical part of the template is very closely approximated by a circle. It might be arguable that any boattail, no matter the length, should start with a circular form? I need to play with my graph and see how circular the Dryden tail is...

Last edited by ennored; 01-18-2013 at 08:40 PM..
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