I am trying to recreate in a ‘clean’ way the following surface (see pictures). It is a connection between a round pole and a NACA profile. However it is important to join all the surfaces with a G2 curvature (for aerodynamics). Does anybody know the right way to model this ?
For the moment I have been using the “Fillsrf” command on Rhino WIP. This worked in the beginning, but I dont manage to do it again, and I believe there has to be a more correct and professional way to do this.
Would anybody know how to do this? I will add the file below.
I would start with the original airfoil profile without the fillet, and create a blend using that profile. Then add the fillet to the trailing edge. For aerodynamics a truncated trailing edge with sharp edges is better than a rounded trailing edge.
Is the blend required to extend to the edges of the rectangular cutout as shown? If so then here is an arrangement using four sided surfaces:
Thank you for your quick reply. I can create the surfaces with the patch command, and they look good with the zebra filling. I can join them afterwards, but if I then apply the ‘showedges’ command, I see all the edges of every patch…so they aren’t really joined. This happens even when I mirror the piece. So I cannot create a solid…
I split the edges. Created a blend curve from the trailing edge to the cusp of the cutout. BlendSrf for the forward blend. Sweep2 for the aft blends. Other methods could be used which might result in simpler blend surfaces.
Patch is still in development, so if something breaks, we need to hear it, hence my question. But apparently that was not the case according to the OP.
This looks really good… Yes, the rectangular edge is really important. I have tried to blend it into more oval forms, but then if I multiply the three arms, it doesnt look smooth…
So you would do a network of curves for the lines, or a sweep2? How would you manage the curvature between the surfaces?
Well so it is not the Patch that doesn’t work. It is the show edges I figured out. I can join it, and effectively it was joined, but in rhino 8 WIP, the show edges command doesnt work properly I think. It still showed it as a naked edge even though it wasn’t one anymore….
