Overlapping Tessellation in OpenVSP for Complex End Caps

[Megha Bhardwaj]

Hi,

I have a fuselage geometry with an end cap shaped like a rounded rectangle featuring a central dip, as shown. In OpenVSP, this is resulting in overlapping tessellation (shown), and I’m unsure how to resolve it. This issue does not occur with a simple rounded rectangle, but I cannot modify my geometry to that shape. How can I fix this tessellation problem while preserving my current design?

[Rob McDonald]

Instead of using an end cap, try adding an additional cross section and set it to a point type.

Rob

On Thu, Feb 13, 2025 at 9:16 PM Megha Bhardwaj <mbhard...@gmail.com> wrote:

Hi,

I have a fuselage geometry with an end cap shaped like a rounded rectangle featuring a central dip, as shown. In OpenVSP, this is resulting in overlapping tessellation (shown), and I’m unsure how to resolve it. This issue does not occur with a simple rounded rectangle, but I cannot modify my geometry to that shape. How can I fix this tessellation problem while preserving my current design?

--
You received this message because you are subscribed to the Google Groups "OpenVSP" group.
To unsubscribe from this group and stop receiving emails from it, send an email to openvsp+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/openvsp/c0995990-0db2-43e5-a25e-5f77b7d9a2d4n%40googlegroups.com.

[Megha Bhardwaj]

Thanks. Converted the end cross-section to a point and it did remove the weird tessellation but now the surface is not flat as shown in side view.

[Megha Bhardwaj]

Okay so I changed the skinning parameters of the point section and got a flat surface. I hope this is correct. Thanks, Rob.


Regards
Megha

[Rob McDonald]

Yes, the correct way to ge the effect you want is by changing the skinning parameters.  However, if you want a sharp corner with a flat bottom, you can achieve that too by turning 'off' the skinning parameters.

I suggest you watch the VSP Ground School videos on skinning if you have trouble

https://vspu.larc.nasa.gov/training-content/chapter-1-vspfundamentals/skinning-blending-and-section-modification/

Rob

To view this discussion visit https://groups.google.com/d/msgid/openvsp/926fe78c-c265-43b8-870f-3efa1159285dn%40googlegroups.com.