CompGeom Wetted Area

[Kayla Dunn]

Hello,

I am running a script to create a generic fixed wing geometry and then using compgeom to calculate the wetted area of the main wing. However, with a wing span input of 8ft, tip chord of 1 ft, and root chord of 1ft I am getting a wetted area of ~29 whereas it should be around 17.

Is there a reason this value is so high? Are there other variables that need to be defined for the correct output wetted area?

Thanks for the help.

[Rob McDonald]

Kayla,

I'd bet that you need to issue an Update(); between setting your
parameters and calling CompGeom...

When running from a script, the VSP engine doesn't update the geometry
after every parameter is changed -- if you're setting a lot of
parameters (say 100), it would really slow things down a lot.
Instead, the user must force an update to regenerate the geometry
after changing parameters, but before calling something like CompGeom.

Rob

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