Closing an eliptical wingtip in CATIA

Hi. I've just created the account here. To come to the point: I have a problem with closing a surface on an eliptical wing/horizontal/vertical stabilizer. I have searched all the internet and tried many options but still couldn't find satisfactory sollution, that makes both leading and trailing edges smooth and left no visible boundries between each surfaces. The problem is pictured in the attachments. I attached CatPart as well.

This is vertical stabilizer of PZL-38 "Wilk", part of my engineer work Thank You in advance for any tips.

2 Answers

I'm not familiar with Catia, but here is a step file which is filled in via SOLIDWORKS.
There is also a very tiny hole in the model which prevented forming it into a solid. If you reference the attached image, the hole was at the bottom most point (bottom being the bottom of the photo, I have no idea what the wing orientation is meant to be).

What happens along the wingtip (elliptical path)? Is there a small vertical section, or maybe a fillet between top and bottom? (I don't think the top and bottom just come together and form a knife edge)