Issue with full-chord rudder

[Filippo Pattacini]

Hi everyone,
I'm trying to model the FUNCUB Multiplex in OpenVSP, but I'm running into some issues with the rudder. As you can see in the image, the rudder is composed of two parts with different chords. Since OpenVSP doesn't allow varying the chord within a single control surface, I had to create two separate rudder surfaces: one at the tip, extending along the full chord, and one at the root, covering about half the chord of the vertical stabilizer.

However, the full-chord section of the rudder has an oblique leading edge, which causes the hinge rotation to be misaligned with the rest of the rudder (instead of giving a purely horizontal deflection). How can I fix this?

I'm sure this is a common issue, does anyone know how to solve it?

Thank you very much!

[Rob McDonald]

There is not a solution in the near term from the GUI.

SubSurface based control surfaces always set the hinge point to the leading edge of the surface.

You could manually edit the *.csf file to change the hinge line.  Then run VSPAERO from the command line.  You might be able to get something to work.

Rob