Discontinuity handling in fit model.

[Mike Vivaldi]

Hi Rob,

I tried to use the fit model for the point cloud of my fuselage. The fit generated an odd discontinuity when using the general fuse cross section. Is there a way to prevent the pinching in the fuselage cross section?

Thanks,

Mike

 

[Rob McDonald]

If I am not mistaken, that isn't a General Fuse XSec, that is the CEdit XSec, with a Bezier curve.

You'll notice that the lower tangent control points (green and yellow) for the left/right sides of the fuse are coincident with the curve control point (black).

I would move those down some (say y=-.3) and then remove the y coordinate of those control points from FitModel's control.  Then, when you re-optimize, it will find the best solution it can without moving those points up.

Rob

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[Mike Vivaldi]

Hi Rob,

I converted to a Cedit to show the points but nothing had been changed from the fit model as an illustrative change only. I will give your suggestion a try.

Thanks,

Mike

[Rob McDonald]

OK, in that case, LowStr is being driven to zero.  You can set it to something reasonable and then remove it from FitModel's control.

Or, you might try using the CEdit XSec which will give you more control.

Rob