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Mike Vivaldi, … Rob McDonald6

6:56 PM

Result interpretation

Yes, the local calculation is informed by local properties -- velocity, chord, Mach number, and

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Result interpretation

Yes, the local calculation is informed by local properties -- velocity, chord, Mach number, and

6:56 PM

6:47 PM

Hello family I just wanted to ask if its possible with y'all permission if I could take on the

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Hello family I just wanted to ask if its possible with y'all permission if I could take on the

6:47 PM

Pavankumar Koratikere, Rob McDonald2

1:31 AM

Driver group for a wing section in Python API

Not at this time -- it looks like an oversight. That said, the SetDriverGroup API call was added with

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Driver group for a wing section in Python API

Not at this time -- it looks like an oversight. That said, the SetDriverGroup API call was added with

1:31 AM

Brandon Litherland, … deenri...@gmail.com6

Mar 13

VSP Airshow Information Missing

Update: I've tried the "sign in with email" option with both my work email and personal

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VSP Airshow Information Missing

Update: I've tried the "sign in with email" option with both my work email and personal

Mar 13

Avijeet Acharya, … Rob McDonald7

Mar 12

Capturing Blunt Trailing Edge

I'll look forward to the fix, while using v3.36 in the meantime. Thanks for your replies. Avijeet

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Capturing Blunt Trailing Edge

I'll look forward to the fix, while using v3.36 in the meantime. Thanks for your replies. Avijeet

Mar 12

Mar 11

Documentation on the calculation of stability derivatives

Hello, Is there any documentation on the calculation of p, q, and r derivatives? Also, what are the

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Documentation on the calculation of stability derivatives

Hello, Is there any documentation on the calculation of p, q, and r derivatives? Also, what are the

Mar 11

Erik Fougner Arnesen, … Rob McDonald6

Mar 11

Version 3.48.2 : Static margin jumps around AOA = 3 deg in stability analysis

Thanks for clarifying that Brandon. The clustering parameters are normalized by what would be uniform

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Version 3.48.2 : Static margin jumps around AOA = 3 deg in stability analysis

Thanks for clarifying that Brandon. The clustering parameters are normalized by what would be uniform

Mar 11

Calioth, Brandon Litherland7

Mar 10

Help with mismatch in CeRAS aircraft model.

Hi. A little update here, so I analysed the lifting surface only using VSPAERO and then added the

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Help with mismatch in CeRAS aircraft model.

Hi. A little update here, so I analysed the lifting surface only using VSPAERO and then added the

Mar 10

Marcos Tejeda, … Brandon Litherland6

Mar 10

Fuselage issues in CompGeom

Thanks a lot, Brandon! El lunes, 9 de marzo de 2026 a la(s) 3:03:51 pm UTC-3, Brandon Litherland

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Fuselage issues in CompGeom

Thanks a lot, Brandon! El lunes, 9 de marzo de 2026 a la(s) 3:03:51 pm UTC-3, Brandon Litherland

Mar 10

Mano, Brandon Litherland3

Mar 7

Unsymmetrical distribution of blades

You can achieve asymmetrical blade distribution, or non-uniform blade distribution using the More tab

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Unsymmetrical distribution of blades

You can achieve asymmetrical blade distribution, or non-uniform blade distribution using the More tab

Mar 7

Julien, … Brandon Litherland6

Mar 6

Mesh Convergence on a Thin-Thick simulation

You're starting much too fine for your initial case to see any convergence. Start with something

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Mesh Convergence on a Thin-Thick simulation

You're starting much too fine for your initial case to see any convergence. Start with something

Mar 6

João Vitor Ribeiro Centeno, … Brandon Litherland5

Mar 6

Help with OpenVSP Python API

While you have Python running, either in console or an IDE, run "pip install -r requirements-dev

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Help with OpenVSP Python API

While you have Python running, either in console or an IDE, run "pip install -r requirements-dev

Mar 6

Carter Johnston, Rob McDonald4

Mar 6

Help needed with Issues with holes forming in mesh

That is a perfect application for using the area based density for the fuselage skin and then using

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Help needed with Issues with holes forming in mesh

That is a perfect application for using the area based density for the fuselage skin and then using

Mar 6

王明坤, … Rob McDonald6

Mar 5

Duct propeller use

OK,thank you! 在2026年3月5日星期四 UTC+8 10:25:06<Rob McDonald> 写道： Thrust and CT distributions are

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Duct propeller use

OK,thank you! 在2026年3月5日星期四 UTC+8 10:25:06<Rob McDonald> 写道： Thrust and CT distributions are

Mar 5

Thomas Pratt, Rob McDonald2

Mar 4

Control Surfaces in VSPaero

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

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Control Surfaces in VSPaero

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

Mar 4

Mar 4

OpenVSP 3.48.2 Released

Yesterday's haste to fix the problem with 3.48 caused some other problems. These are caused by

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OpenVSP 3.48.2 Released

Yesterday's haste to fix the problem with 3.48 caused some other problems. These are caused by

Mar 4

Erik Fougner Arnesen, … Rob McDonald7

Mar 4

VSPAERO data graphs

One possible stop gap solution could be adding a table, for the different parameters and their

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VSPAERO data graphs

One possible stop gap solution could be adding a table, for the different parameters and their

Mar 4

Erik Fougner Arnesen

Mar 4

Issues simulating vehicle with and without fuselage (3.47.0)

Hi, I been working on fixing the issues I have with my vehicle. When I simulate with the full vehicle

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Issues simulating vehicle with and without fuselage (3.47.0)

Hi, I been working on fixing the issues I have with my vehicle. When I simulate with the full vehicle

Mar 4

Omer Kandemir, Brandon Litherland5

Mar 4

VSPAero and PDT correct use case

I'm using 3.46. PDT itself does not create a mesh component but If I'm not mistaken vsp.

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VSPAero and PDT correct use case

I'm using 3.46. PDT itself does not create a mesh component but If I'm not mistaken vsp.

Mar 4

Mar 3

OpenVSP 3.48.1 Released

This is a quick bugfix release for a couple of issues that popped up. Thanks to Brian German and

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OpenVSP 3.48.1 Released

This is a quick bugfix release for a couple of issues that popped up. Thanks to Brian German and

Mar 3

Julius Carter, Rob McDonald2

Mar 3

VSPaero Simulation

Make sure your Propeller is in a Set and use that Set in VSPAERO (either thick or thin -- start with

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VSPaero Simulation

Make sure your Propeller is in a Set and use that Set in VSPAERO (either thick or thin -- start with

Mar 3

Simon Boudoux, Brandon Litherland2

Mar 2

Cd0 in VSPAERO and Parasite Drag tool

If you haven't yet, please search the Google Group for existing posts on this topic. If you still

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Cd0 in VSPAERO and Parasite Drag tool

If you haven't yet, please search the Google Group for existing posts on this topic. If you still

Mar 2

Federico Feraiorni, … Brandon Litherland17

Mar 2

Help STL model analysis

Hi Brandon, I followed your suggestions, but unfortunately, I haven't had any success yet. The

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Help STL model analysis

Hi Brandon, I followed your suggestions, but unfortunately, I haven't had any success yet. The

Mar 2

Federico Feraiorni, … Hans4

Mar 1

Info Tessellation

It seems that the vspaero doesn't perfectly cautch an impact of the body on the lift. I was

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Info Tessellation

It seems that the vspaero doesn't perfectly cautch an impact of the body on the lift. I was

Mar 1

Rob McDonald, Toshio Otaguro2

Feb 28

OpenVSP 3.48.0 Released

Rob, I confirmed that VSPAERO console font works fine on the ja-JP locale in Windows. Many thanks.

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OpenVSP 3.48.0 Released

Rob, I confirmed that VSPAERO console font works fine on the ja-JP locale in Windows. Many thanks.

Feb 28

Violet Philip, Rob McDonald2

Feb 28

XLEMAC in openVSP

You probably don't want to find your CG in a bottoms up way. There are so many parts to an

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XLEMAC in openVSP

You probably don't want to find your CG in a bottoms up way. There are so many parts to an

Feb 28

Steven Zhu, Rob McDonald6

Feb 19

Issue with VSPAERO via CLI: "Could not load Degen Geometry" error

On Thursday, February 19, 2026 at 6:15:25 PM UTC-8 zyx20...@gmail.com wrote: Thank you for the

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Issue with VSPAERO via CLI: "Could not load Degen Geometry" error

On Thursday, February 19, 2026 at 6:15:25 PM UTC-8 zyx20...@gmail.com wrote: Thank you for the

Feb 19

Guy Mullins, Rob McDonald2

Feb 19

Automation of VSPaero

It depends on how complex an automation framework you are working in. If you want to use OpenVSP /

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Automation of VSPaero

It depends on how complex an automation framework you are working in. If you want to use OpenVSP /

Feb 19

Nick Schneider, Rob McDonald3

Feb 18

Dihedral changes airfoil thickness

Thanks Rob, that did the trick! On Wednesday, 18 February 2026 at 18:47:08 UTC+1 Rob McDonald wrote:

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Dihedral changes airfoil thickness

Thanks Rob, that did the trick! On Wednesday, 18 February 2026 at 18:47:08 UTC+1 Rob McDonald wrote:

Feb 18

Julien, Rob McDonald2

Feb 16

Design Variables Constraints in Adjoint Optimizer

At present, there is no way to constrain design variables. Right now, the embedded optimizer is

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Design Variables Constraints in Adjoint Optimizer

At present, there is no way to constrain design variables. Right now, the embedded optimizer is

Feb 16

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