Quote:
Originally Posted by MetroMPG
I'm a little nervous about those nervous looking side tufts. It's clear I could increase the top taper - those tufts are laying almost still right to the transom.
What I don't know - and maybe you or Bob can tell me - is this: should my goal be to taper as much as possible until I actually see evidence of separation through circulation/reverse flow, and then back off a bit?
In other words, will we achieve favorable drag results even as we increase the amount of "nervousness" in the tufts (evidence of turbulence and a thickening boundary layer) through further tapering?
It's clear I can taper the top more. Not sure about the sides though. Maybe you can decide when I post some video this week.
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Metro, I'm assuming that the next tuft test that you do will incorporate an
adjustable section on the sides of the tail.
Since you are working with CAD (
) it would be really easy to do.
Not only will you be able to test the maximum amount of taper that you can have, but also you can verify if that flutter was indeed coming from upstream.