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smoothing complex surfaces from loft curves - viacad pro 11
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Broc  
#1 Posted : Friday, May 15, 2020 10:14:19 AM(UTC)
Broc

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Is there maybe a better tool or technique to use when attempting to create accurate and smooth surfaces without lumps and bumps showing up after hours and hours of adjusting points within interpolation splines after lofting? Any advice would be fantastic. Thanks!

Edited by user Friday, May 15, 2020 10:44:00 AM(UTC)  | Reason: Not specified

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UGMENTALCASE  
#2 Posted : Friday, May 15, 2020 12:09:50 PM(UTC)
UGMENTALCASE

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I had something similar on something I was re working. I ended up using ruled surface, anything else went bobbly like you say. It's almost like it bulges between sections.
Trouble is ruled surface is flat sections.
I've also used the one with n and m curves seemed to guide it better.
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murray  
#3 Posted : Friday, May 15, 2020 5:45:38 PM(UTC)
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Don't try to create complex shapes as a single surface. Car bodies, aircraft fuselages are designed as successions of surfaces that transition into one another, your fuselage is probably a central cylindrical section blended into conics blended into ellipsoid tips. Our aesthetic is challenged by tangency lines, but metal aircraft usually have mostly single curvature panels, or the panels have some stretching, but it's restricted by production practicality, trying to reduce stamped or wheeled panels to as few as possible.

Edited by user Friday, May 15, 2020 8:09:21 PM(UTC)  | Reason: Not specified
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Broc  
#4 Posted : Saturday, May 16, 2020 9:58:07 PM(UTC)
Broc

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Thanks for the replies. Using single curve panels through out the nose section, especially under the window pane of a Boeing 737 seems impossible. The curves are very dynamic and definitely compounded. Unless I'm misunderstanding what you're saying here. I shaped multiple panels that were separate from the loft around the nose area. I noticed that this makes it look very segmented along the bulkheads, where it is a nice gradual curve in the real world. If they were able to do this with slide rules in the 60's, there's gotta be a way in viacad 11, yeah?

Edited by user Saturday, May 16, 2020 10:00:08 PM(UTC)  | Reason: Not specified
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