Cool video !

Thanks Pilou,

I was rushing to finish within 15 minutes. Having been modelling these all day long I was a little bleary eyed as well, lol. The more I work with these the more it looks like rebuilding the ter may be the key. I will have to try it with the actual ter, no scaling, but rebuild it. It looks like breaking the circle in four pieces and rebuilding it with 25 points is the trick. It doesn't seem like rebuilding the rails does anything. The sweep seems to have some of its own logic that we don't have access too. But that doesn't seem to be much of an issue.

I know that rebuilding the whole airfoil is a disaster. Basically I just keep ruling things out. I'm getting very close to the culprit of my repeatability woes.

I played around with things some more and found that the variability is coming from the ter rebuild and the ter size. One model I don't have to scale the ter up to get the desired results, however, I have to rebuild it with more points. In another model I have to scale it up and rebuild it. To complicate things more how many points you add in the rebuild affects things. Given all the different combinations of possible things going on, there is going to be a lot of variability, no way around it.

Found the problem. I tried rebuilding the suction and pressure side curves as well as the trailing edge radius (ter). I added roughly double the points to each and everything worked. I will update the screencasts on my youtube page in the coming days.

Update; Unfortunately, the above did not entirely fix the problems. Later on operations failed to create good geo. So I'm still going to have to play around and see what exactly causes so much variability.

I found the problem. If I rebuild most of the lines, arcs, and circles used throughout the entire modelling process everything works fine. I did not need to scale the ter up at all.

Latest pictures are available at; http://propdesign.weebly.com/screenshots.html

Latest screencasts are available at; http://www.youtube.com/user/propdesignsupport/