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Thanks guys
First @chaz
1.In fact this shape was the result of a whole lot of iterations on F.I. There were others that performed differently, but the thing about this one was the thin attached top boundary layer at the end of the clip. The airflow seemed to really like the big radius, although it took awhile to "settle in". That's the second big revelation. Airflow patterns do not equillibrate instantly.
2. See the comment below yours. An overall length of 4.5m @ 30m/s gives that 10 X10E6 Reynolds. It seems to works fine
BTW the pressure coefficients in this 2D model are very close top and bottom over the first 10% of the chord. I have a different F.I. simulation with the same nose that show no separation. Haven't figured that out.
@Aerohead: I guess I tried to address your comments in the above. 30m/s (67.1MPH) i took to be a bare minimum to get an acceptable Re with a reasonable scale model size. It's a figure that gets cited a lot in Katz's book, which is why I went with it. Not to mention the, ahem, legal issue.
On your second point....aaahh,sigh. I haven't heard anything either way about Symscape/Caedium, but if it doen't work out, I haven't lost my shirt. I have great hopes for it.
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