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OpenVSP

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Lorenzo Naddei, Rob McDonald4

12/29/25

CAN'T DEFLECT A SURFACE

Just save two files -- one with the elevator, the other with the rudder. Run things twice, figure it

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CAN'T DEFLECT A SURFACE

Just save two files -- one with the elevator, the other with the rudder. Run things twice, figure it

12/29/25

Tim Cuatt, Rob McDonald4

12/29/25

Bitmasking in VSPScript?

OK, thanks for the clarification. I guess AngelScript doesn't automatically interpret ints as

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Bitmasking in VSPScript?

OK, thanks for the clarification. I guess AngelScript doesn't automatically interpret ints as

12/29/25

danie...@gmail.com, Rob McDonald2

12/23/25

Difficulty getting prop model to work

You can't do propeller analysis with the 'Shown' Set. You must put the Prop into another

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Difficulty getting prop model to work

You can't do propeller analysis with the 'Shown' Set. You must put the Prop into another

12/23/25

12/18/25

VSP Python API RemoveControlSurfaceGroup

Hi everyone, I'm looking for a function to remove a ControlSurface group that I create by using

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VSP Python API RemoveControlSurfaceGroup

Hi everyone, I'm looking for a function to remove a ControlSurface group that I create by using

12/18/25

Matin Nafari, … Tad Chichester3

12/17/25

Loads of Individual Surfaces

Please do Rob. I have developed a suite of python apps for FAR 23 loads that depend on the pre-v3.45

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Loads of Individual Surfaces

Please do Rob. I have developed a suite of python apps for FAR 23 loads that depend on the pre-v3.45

12/17/25

José Roberto Clark Reis, … Rob McDonald4

12/16/25

Flow field vectors on wake/behind wing/Treftz plane

When you run VSPAERO from the GUI, if you scroll to the very top of the output console, it will echo

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Flow field vectors on wake/behind wing/Treftz plane

When you run VSPAERO from the GUI, if you scroll to the very top of the output console, it will echo

12/16/25

Limo, … Rob McDonald7

12/16/25

VSP_aero Supersonic Secondary Development

To use supersonic at this time, all components must be in the Thin set. Only very early work has been

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VSP_aero Supersonic Secondary Development

To use supersonic at this time, all components must be in the Thin set. Only very early work has been

12/16/25

Lorenzo Naddei, Rob McDonald5

12/16/25

VSPAERO VLM+PANEL ERROR

Plane and eigenvalues fixed, thank you for the help and the tips!! Lorenzo Il giorno lunedì 15

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VSPAERO VLM+PANEL ERROR

Plane and eigenvalues fixed, thank you for the help and the tips!! Lorenzo Il giorno lunedì 15

12/16/25

Christopher Smith, … Rob McDonald5

12/15/25

Export Actuator Disc Surface as Ngons?

Glad to hear it. I don't think the 'Convert to NGons' action is available through the API

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Export Actuator Disc Surface as Ngons?

Glad to hear it. I don't think the 'Convert to NGons' action is available through the API

12/15/25

Matin Nafari, Rob McDonald6

12/14/25

OpenVSP API problem in Actuator Disk in new version 3.46.0

That is interesting. You should not need the 'DegenGeom' -- but you should need the

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OpenVSP API problem in Actuator Disk in new version 3.46.0

That is interesting. You should not need the 'DegenGeom' -- but you should need the

12/14/25

Cindy Chen, Rob McDonald3

12/13/25

Frame of reference for stability derivatives

Thank you! On Saturday, December 13, 2025 at 3:38:01 PM UTC-5 Rob McDonald wrote: Fx, Fy, Fz, Mx, My,

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Frame of reference for stability derivatives

Thank you! On Saturday, December 13, 2025 at 3:38:01 PM UTC-5 Rob McDonald wrote: Fx, Fy, Fz, Mx, My,

12/13/25

Ravi Kumar ae20d006, … Brandon Litherland4

12/10/25

Human file export

Let's take a step back. Why do you want to perform grid generation steps on the statistical human

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Human file export

Let's take a step back. Why do you want to perform grid generation steps on the statistical human

12/10/25

12/10/25

OpenVSP Workshop 2026 Save The Date!

The 2026 Workshop will be held in-person at Embry Riddle Aeronautical University in Daytona Beach

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OpenVSP Workshop 2026 Save The Date!

The 2026 Workshop will be held in-person at Embry Riddle Aeronautical University in Daytona Beach

12/10/25

Alfredo Escolano Lopez, Rob McDonald3

12/10/25

How to refine the geometry ?

Thank you very much ! Your advice has been very helpful Rob . Your app is super useful and practical

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How to refine the geometry ?

Thank you very much ! Your advice has been very helpful Rob . Your app is super useful and practical

12/10/25

Mohamed Hetta, Rob McDonald3

12/9/25

Getting NaN values for material laminates with cores.

It was my mistake actually. I was using an incorrect value for Poisson's ratio = 0.5 which led to

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Getting NaN values for material laminates with cores.

It was my mistake actually. I was using an incorrect value for Poisson's ratio = 0.5 which led to

12/9/25

Charlie Raskopf, … Leonardo Ungureanu8

12/4/25

Trimmed Surface generation fault

Hello, making some more trials, it seems the issue was the tip cap of the front_arm. It was rounded

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Trimmed Surface generation fault

Hello, making some more trials, it seems the issue was the tip cap of the front_arm. It was rounded

12/4/25

nicolò perasso, Rob McDonald2

12/4/25

From STL to CPACS file using openVSP

Have you tried calling 'ImportFile' from the API to import you STL file? /*! Import a file

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From STL to CPACS file using openVSP

Have you tried calling 'ImportFile' from the API to import you STL file? /*! Import a file

12/4/25

12/3/25

The game of Cat and Mouse with SPAM continues.... I used to allow anyone to join this group and post

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The game of Cat and Mouse with SPAM continues.... I used to allow anyone to join this group and post

12/3/25

Klarisse Ng, … Brandon Litherland9

12/2/25

[OpenVSP] Airfoil changes

Apologies, Rob. That was meant for the OP. I was suggesting that they take a different approach to

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[OpenVSP] Airfoil changes

Apologies, Rob. That was meant for the OP. I was suggesting that they take a different approach to

12/2/25

Steven Zhu, … Drew Mason8

12/1/25

Cannot access actuator disk or set RPM/CT/CP after ComputeGeometry (Python API, v3.46.0)

Hi, No I didn't, I can't get it to work. I use 3.41 instead, which doesn't seem to have

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Cannot access actuator disk or set RPM/CT/CP after ComputeGeometry (Python API, v3.46.0)

Hi, No I didn't, I can't get it to work. I use 3.41 instead, which doesn't seem to have

12/1/25

Nathan Collins, … Mike Isted9

11/27/25

Python API Questions

Thanks Brandon. I'm working through the python api files in the distribution and learning a lot!

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Python API Questions

Thanks Brandon. I'm working through the python api files in the distribution and learning a lot!

11/27/25

Klarisse Ng, … Rob McDonald7

11/25/25

VSPAero Output Variable Query

Yes, the wake integration should still work in the case of an actuator disk in front of the wing. Rob

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VSPAero Output Variable Query

Yes, the wake integration should still work in the case of an actuator disk in front of the wing. Rob

11/25/25

Jones, … Brian Davis4

11/25/25

Wave Drag vs Parasitic Drag Tool

Hi Rob, Re: "The parasite drag tool is fine for supersonic speeds. I'm not sure why someone

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Wave Drag vs Parasitic Drag Tool

Hi Rob, Re: "The parasite drag tool is fine for supersonic speeds. I'm not sure why someone

11/25/25

Michael Kang, … Brandon Litherland7

11/25/25

vspscript analysis result issue

Hello, sorry for late reply.. Thank you Brandon and Rob. I checked the settings that I made on

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vspscript analysis result issue

Hello, sorry for late reply.. Thank you Brandon and Rob. I checked the settings that I made on

11/25/25

Klarisse Ng, … Zach Hazen3

11/24/25

VSPAero Results for Varying Aspect Ratios

Just keep in mind for studying induced drag with a swept wing you are going to have varying span

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VSPAero Results for Varying Aspect Ratios

Just keep in mind for studying induced drag with a swept wing you are going to have varying span

11/24/25

Carlos Rodriguez, … lsol...@gmail.com5

11/22/25

OpenVSP on Fedora 42 / Arch Linux and Wayland

Hello again, I have finally installed 3.46.0 version too. Initially I tried to compile from source

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OpenVSP on Fedora 42 / Arch Linux and Wayland

Hello again, I have finally installed 3.46.0 version too. Initially I tried to compile from source

11/22/25

11/21/25

OpenVSP/VSPAero Slat Modeling

Hello all, I am an undergraduate senior and have modeled an MD-11 for... reasons y'all can

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OpenVSP/VSPAero Slat Modeling

Hello all, I am an undergraduate senior and have modeled an MD-11 for... reasons y'all can

11/21/25

Brandon Litherland

11/20/25

OpenVSP Ground School Site Move

Good afternoon, everyone. I wanted to pass along that I was finally able to finish rebuilding the

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OpenVSP Ground School Site Move

Good afternoon, everyone. I wanted to pass along that I was finally able to finish rebuilding the

11/20/25

Leonardo Ungureanu, Rob McDonald7

11/18/25

Python API, problems on Linux (works on Windows)

Thank you very much. I'll reinstall it. To install the API on Linux, is the process equivalent to

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Python API, problems on Linux (works on Windows)

Thank you very much. I'll reinstall it. To install the API on Linux, is the process equivalent to

11/18/25

11/18/25

"VSPAEROComputeGeometry" v3.46.0 SetIntAnalysisInput does not translate ThinGeomSet and GeomSet values!

Hi everyone, I'm creating a python class to run VSPAero analysis. The class has the following

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"VSPAEROComputeGeometry" v3.46.0 SetIntAnalysisInput does not translate ThinGeomSet and GeomSet values!

Hi everyone, I'm creating a python class to run VSPAero analysis. The class has the following

11/18/25

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