Control Surfaces in VSPaero

[Thomas Pratt]

Hi,

I am trying to run a simple VSPaero flying wing model with varying elevator deflections to check the result on pitching moment, lift and drag. 

I have defined the subsurfaces in the wing geometry editor and they show up as expected on the wing. In VSPaero i have set up the control grouping and gains to make both surfaces move in the same direction. In the VSPaero 'overview' tab i have selected the control surface and prescribed it a deflection of 5 degrees. When i click 'prepare solver' the geometry mesh shows as expected with the elevators in place but not deflected.

When i click on 'launch solver', I get the following message:

"

Found 1 unique components
ComponentIDForComponent_[1]: 1
ComponentIDForSurface_[1]: 1
ComponentIDForSurface_[2]: 1
ComponentIDForComponent_[1]: 1
Surface: 1 --> Component: 1 --> SurfaceName: Main_Wing_C
Surface: 2 --> Component: 1 --> SurfaceName: Main_Wing_C
SurfaceIsThick_[1]: 0
SurfaceIsThick_[2]: 0
Component: 1 with ID: 1 is thin
Pure tri mesh has 4948 tris
After building ...pure tri mesh has 4948 tris
Looking for C:/Users/USER/Documents/VSP/BwB_concept_mk8.ControlSurfaces.taglist control surface definition file ...
There is control surface information...
Control surface has 37 loops
Could not find start of control surface C:/Users/USER/Documents/VSP/BwB_concept_mk8.csf data in csf for control surface: BwB_concept_mk8Maining_C_Surf0_SS_CONT_3
Done   

"

the solver then stops without running anything.

have i missed a step here or set up the control surface wrongly?

Thankyou in advance for your advice!

Tom

[Rob McDonald]

Are you using _ as a character in your Geom names and/or your Control Surface and/or Control Surface Group names?

If so, don't do that.

Rob