I need to create 15mm thick ribs inside my now drawn aerofoil section wing outer surface shape which has a 2mm rad trailing edge.
The ribs must allow for a 2mm skin thickness laid over them in construction so that the resulting shape is back to the aerofoil wing size/shape in Rhino…
The wing skin is currently a surface, not a solid
what is best approach here ?
OffsetSrf 2mm the wing inwards (as is done on the attached file) then create ribs from solid 15mm thick making sure such go beyond the wing and use it to cut them (pastry cutting in effect), They need to be solids and their outer edge faces will slope a little as the wing slopes to the wingtip. Can they be capped etc ? I try for this and capping fails.
keep wing original size and cut the ribs, then reduce their size around the edge by 2mm somehow.
any other ideas.
I had seen myself using Shell (not available in V4) but no need, OffsetSrf 2mm would suffice methinks
I dont even manage this though, as the wing fails to work in booleanSplit. Its been formed of many sweeps from root to tip, the sweeps sharing the rails so they should join together, and the profiles for the main wing and the extensions on the ends were the same, so again they should all join fine, and in fact the join command worked with no complaints from it. The shorter sweeps inboard of rib1 were done after extending the lines that had been created from rib1 to wingtip rib as the wing goes beyond the face of rib 1. These were extended beyond a trim line then trimmed. Thus the end should be planar. I then selected all the surface pieces from the sweeps using select all for the layer and used Join.
Is that the best way of joining them, I see a few slivers/gaps and they are causing causing boolean fail. If I trim that end off then the wing works so it has to be the fact that the cutting shape has flaws through the joins of the end pieces . Display bad objects doesnt show anything though.
Now that its joined, how can I fuse these together better ? Is there a healing tool !!! ?? I could do with one. If I trim off the 30mm extension pieces it then will act as cutter. Why have they not joined well enough to satisfy boolean. Booleans fails often for me as if they are hyper fussy.
It acted ok as cutter though when using trim commandon the solid rectangle, but I then couldnt cap the now separate surfaces. Why did it succeed with trim and why did cap fail ?
BooleanSplitFail_Wing.3dm (758.9 KB)