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José Roberto Clark Reis, … Rob McDonald4

Dec 16

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

Dec 16

Matin Nafari, Rob McDonald2

Dec 16

Loads of Individual Surfaces

I will mention this to the developer. Rob On Tuesday, December 16, 2025 at 7:07:57 AM UTC-8 matin...@

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Loads of Individual Surfaces

I will mention this to the developer. Rob On Tuesday, December 16, 2025 at 7:07:57 AM UTC-8 matin...@

Dec 16

Limo, … Rob McDonald7

Dec 16

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

Dec 16

Lorenzo Naddei, Rob McDonald5

Dec 16

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

Dec 16

Christopher Smith, … Rob McDonald5

Dec 15

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

Dec 15

Matin Nafari, Rob McDonald6

Dec 14

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

Dec 14

Cindy Chen, Rob McDonald3

Dec 13

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,

Dec 13

Ravi Kumar ae20d006, … Brandon Litherland4

Dec 10

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

Dec 10

Dec 10

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

Dec 10

Alfredo Escolano Lopez, Rob McDonald3

Dec 10

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

Dec 10

Mohamed Hetta, Rob McDonald3

Dec 9

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

Dec 9

Charlie Raskopf, … Leonardo Ungureanu8

Dec 4

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

Dec 4

nicolò perasso, Rob McDonald2

Dec 4

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

Dec 4

Dec 3

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

Dec 3

Klarisse Ng, … Brandon Litherland9

Dec 2

[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

Dec 2

Steven Zhu, … Drew Mason8

Dec 1

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

Dec 1

Nathan Collins, … Mike Isted9

Nov 27

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!

Nov 27

Klarisse Ng, … Rob McDonald7

Nov 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

Nov 25

Jones, … Brian Davis4

Nov 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

Nov 25

Michael Kang, … Brandon Litherland7

Nov 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

Nov 25

Klarisse Ng, … Zach Hazen3

Nov 24

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

Nov 24

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

Nov 22

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

Nov 22

Nov 21

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

Nov 21

Brandon Litherland

Nov 20

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

Nov 20

Leonardo Ungureanu, Rob McDonald7

Nov 18

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

Nov 18

Nov 18

"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

Nov 18

Violet Philip, Rob McDonald3

Nov 17

SHARP SPIKES AT THE WING (B767-200ER)

Thanks Rob for the reply. Violet On Tue, 18 Nov 2025, 01:31 Rob McDonald, <rob.a.mcdonald@gmail.

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SHARP SPIKES AT THE WING (B767-200ER)

Thanks Rob for the reply. Violet On Tue, 18 Nov 2025, 01:31 Rob McDonald, <rob.a.mcdonald@gmail.

Nov 17

Valentin Le Bailly, Rob McDonald2

Nov 17

Trimmed surfaces export for CFD recommendations

If you want to use the STL file, I suggest you run CompGeom before exporting the STL file. That will

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Trimmed surfaces export for CFD recommendations

If you want to use the STL file, I suggest you run CompGeom before exporting the STL file. That will

Nov 17

Brian Davis, … Rob McDonald6

Nov 15

VSPAERO Issues with wing-body in 3.45.X

My recommendation is to use the thick representation for the body and fairing, and thin for the wing.

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VSPAERO Issues with wing-body in 3.45.X

My recommendation is to use the thick representation for the body and fairing, and thin for the wing.

Nov 15

Diego Elvira, Brandon Litherland6

Nov 14

VSPAERO CDi convergence issues

Thanks for the advice. I'll look into these suggestions as soon as I'm able. El El jue, 13

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VSPAERO CDi convergence issues

Thanks for the advice. I'll look into these suggestions as soon as I'm able. El El jue, 13

Nov 14

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