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Mike Vivaldi, Rob McDonald11

6:20 PM

With stall model CLtot decreases with AOA as AOA increases from negative to positive

Well, your root chord is 12.36 -- while your cref is only 7.57, so your ReCref is off by about a

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With stall model CLtot decreases with AOA as AOA increases from negative to positive

Well, your root chord is 12.36 -- while your cref is only 7.57, so your ReCref is off by about a

6:20 PM

Yasushi Morikawa

Jun 23

Problem of mesh

Nice to meet you. I use OpenVSP to design , and I am analyzing my model using VSPAERO. The model

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Problem of mesh

Nice to meet you. I use OpenVSP to design , and I am analyzing my model using VSPAERO. The model

Jun 23

Koaib Kaleem, … Brandon Litherland15

Jun 22

Parametric NASA Almond Geometry

right, will try On Monday, June 22, 2026 at 6:33:17 PM UTC+5 Brandon Litherland wrote: I would

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Parametric NASA Almond Geometry

right, will try On Monday, June 22, 2026 at 6:33:17 PM UTC+5 Brandon Litherland wrote: I would

Jun 22

Jun 20

Help to use VSPAERO files

Hello, We are currently working on the stability and flight dynamics analysis of a fixed-wing UAV

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Help to use VSPAERO files

Hello, We are currently working on the stability and flight dynamics analysis of a fixed-wing UAV

Jun 20

Maria Żelewska, Rob McDonald2

Jun 20

Simulating hypersonic flow

No, VSPAERO can only model linearized supersonic flow. Similarly, the wave drag calculation is based

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Simulating hypersonic flow

No, VSPAERO can only model linearized supersonic flow. Similarly, the wave drag calculation is based

Jun 20

Koaib Kaleem, Rob McDonald5

Jun 20

Edge length in stl

right thx On Saturday, June 20, 2026 at 12:42:20 AM UTC+5 Rob McDonald wrote: It just depends on what

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Edge length in stl

right thx On Saturday, June 20, 2026 at 12:42:20 AM UTC+5 Rob McDonald wrote: It just depends on what

Jun 20

Sofia Georgiou, … Thirumalai A7

Jun 19

problem with importing airfoil files

I've had some issues with importing Airfoil files as well, and what has worked for me is to copy/

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problem with importing airfoil files

I've had some issues with importing Airfoil files as well, and what has worked for me is to copy/

Jun 19

Brandon Litherland

Jun 17

Re: Convergence Factors Clarification

There are no tutorials or documentation other than the source code and parameter descriptions for

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Re: Convergence Factors Clarification

There are no tutorials or documentation other than the source code and parameter descriptions for

Jun 17

Luke Young, Brandon Litherland2

Jun 16

You can run this mode from the vspaero command line (-quasi option) or via the GUI as Pseudo Steady

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You can run this mode from the vspaero command line (-quasi option) or via the GUI as Pseudo Steady

Jun 16

Jun 9

Inertia Problem Ixz

Good morning, I have a question regarding the computations of Inertia using MassProps. When I created

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Inertia Problem Ixz

Good morning, I have a question regarding the computations of Inertia using MassProps. When I created

Jun 9

Jun 7

openvsp elevons and hinge add

Hello Everyone, Can anyone help me set up a control surface in OpenVSP? I am trying to model an

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openvsp elevons and hinge add

Hello Everyone, Can anyone help me set up a control surface in OpenVSP? I am trying to model an

Jun 7

Jun 5

OpenVSP 3.50.5 Released

Just in time for AIAA AVIATION, a mostly bugfix release with a couple of small enhancements too. I

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OpenVSP 3.50.5 Released

Just in time for AIAA AVIATION, a mostly bugfix release with a couple of small enhancements too. I

Jun 5

Brandon Litherland, … Daniel E.8

Jun 5

VSP Airshow Information Missing

I just tried "sign in with email" with my work email in Outlook and I did receive the email

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VSP Airshow Information Missing

I just tried "sign in with email" with my work email in Outlook and I did receive the email

Jun 5

Hiroshi Ohsato, … Brandon Litherland4

Jun 5

the way to convert OpenVSP file (.vsp3 file) to DATCOM data

There are no updates. I suspect that anyone running into this issue has already followed Rob's

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the way to convert OpenVSP file (.vsp3 file) to DATCOM data

There are no updates. I suspect that anyone running into this issue has already followed Rob's

Jun 5

Iordanis Sapidis, Rob McDonald14

Jun 4

OpenVSP 3.50.4 VSPAERO crashes with default wing

Yeah this version seems much more stable, thanks. On Wednesday, 3 June 2026 at 19:03:13 UTC+3 Rob

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OpenVSP 3.50.4 VSPAERO crashes with default wing

Yeah this version seems much more stable, thanks. On Wednesday, 3 June 2026 at 19:03:13 UTC+3 Rob

Jun 4

Christian Hauschel, Rob McDonald6

Jun 2

VSPAERO TE Detection Fail

It is tolerance related, but not in an expected way. For some reason, you have TE closure turned ON

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VSPAERO TE Detection Fail

It is tolerance related, but not in an expected way. For some reason, you have TE closure turned ON

Jun 2

Billy Stewart, Rob McDonald5

Jun 2

Yes, all bodies must be individually watertight for CompGeom to work properly. The Stack component

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Yes, all bodies must be individually watertight for CompGeom to work properly. The Stack component

Jun 2

Shakil Salim, Rob McDonald2

Jun 2

Seeking Expert Advice: Verifying Bell-Shaped Lift Distribution (BSLD) in OpenVSP

Any wing planform can be twisted to match any desired lift distribution at one operating condition (

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Seeking Expert Advice: Verifying Bell-Shaped Lift Distribution (BSLD) in OpenVSP

Any wing planform can be twisted to match any desired lift distribution at one operating condition (

Jun 2

Adjei Ameyaw, Rob McDonald3

Jun 1

Group Modification

Thanks Rob On Monday, 1 June 2026 at 00:23:17 UTC-4 Rob McDonald wrote: From the API, if you want to

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Group Modification

Thanks Rob On Monday, 1 June 2026 at 00:23:17 UTC-4 Rob McDonald wrote: From the API, if you want to

Jun 1

Zak Conte, Rob McDonald4

Jun 1

OpenVSP 3.50.1 - 'Apply Loads' results in 0 DLOADS

Hello Rob, Thank you for the response, I have added a new issue report to the GitHub. Zak Conte On

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OpenVSP 3.50.1 - 'Apply Loads' results in 0 DLOADS

Hello Rob, Thank you for the response, I have added a new issue report to the GitHub. Zak Conte On

Jun 1

Dennis Spelt, Rob McDonald2

Jun 1

VSPAero coefficient definitions

The w subscript means that it is the inviscid contribution computed from a wake based formulation --

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VSPAero coefficient definitions

The w subscript means that it is the inviscid contribution computed from a wake based formulation --

Jun 1

Shakil Salim, Rob McDonald2

May 30

How is the data broken? What are you seeing vs. what are you expecting to see? Rob On Saturday, May

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How is the data broken? What are you seeing vs. what are you expecting to see? Rob On Saturday, May

May 30

Brandon Litherland

May 28

Re: OpenVSP to Digital DATCOM

You already posted this question in the appropriate thread. Don't duplicate posts. On Thursday,

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Re: OpenVSP to Digital DATCOM

You already posted this question in the appropriate thread. Don't duplicate posts. On Thursday,

May 28

May 27

ERROR IN LOD FILE

Hello, I just realized that the LOD file extracts correctly the aero loads ONLY when the lifting

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ERROR IN LOD FILE

Hello, I just realized that the LOD file extracts correctly the aero loads ONLY when the lifting

May 27

May 23

VSPAero Wake Iterations

Hi, Apologies if already discussed in the group, can someone tell me the best practice rules of thumb

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VSPAero Wake Iterations

Hi, Apologies if already discussed in the group, can someone tell me the best practice rules of thumb

May 23

May 15

OpenVSP 3.50.3 Released

No features here, just a few bug fixes. One of them critical. Some *.vsp3 files written with 3.50.2

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OpenVSP 3.50.3 Released

No features here, just a few bug fixes. One of them critical. Some *.vsp3 files written with 3.50.2

May 15

May 14

Guidance on building models with vertical tails

Hi all, I am running a VSPAero analysis on a BWB with two vertical fins near the trailing edge of the

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Guidance on building models with vertical tails

Hi all, I am running a VSPAero analysis on a BWB with two vertical fins near the trailing edge of the

May 14

Ayush Jain, Rob McDonald3

May 14

Trimmed IGES and STEP Internal Structures Export

Thank you! On Tuesday, May 12, 2026 at 11:11:55 AM UTC-4 Rob McDonald wrote: Instead of calling

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Trimmed IGES and STEP Internal Structures Export

Thank you! On Tuesday, May 12, 2026 at 11:11:55 AM UTC-4 Rob McDonald wrote: Instead of calling

May 14

Patrick Hammer, Rob McDonald5

May 14

Download Archive

Nevermind, I need to hold it longer. I'm good now. Patrick On Thu, May 14, 2026 at 10:51 AM

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Download Archive

Nevermind, I need to hold it longer. I'm good now. Patrick On Thu, May 14, 2026 at 10:51 AM

May 14

Jannis Heinemann, Rob McDonald6

May 13

Strange second dataset

I re-ran both cases best of the first case with Re = 1.01199e7 and they were identical, so the

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Strange second dataset

I re-ran both cases best of the first case with Re = 1.01199e7 and they were identical, so the

May 13

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