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danie...@gmail.com, Rob McDonald2

1:55 PM

How to hide Centerline Plane

That is a representation of the VSPAERO slice plane. It will go away if you close the VSPAERO GUI. Or

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How to hide Centerline Plane

That is a representation of the VSPAERO slice plane. It will go away if you close the VSPAERO GUI. Or

1:55 PM

Steven Zhu, … Brandon Litherland7

6:53 AM

VLM Solver Stuck on Wake Grid Merging with Control Surface

Weird. Reducing the num U and W down to 21 lets it run fine. I tried again and got it working by only

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VLM Solver Stuck on Wake Grid Merging with Control Surface

Weird. Reducing the num U and W down to 21 lets it run fine. I tried again and got it working by only

6:53 AM

Mike Vivaldi, … Brandon Litherland5

6:40 AM

Fit Model question

The 2025 OpenVSP Workshop has a great presentation by Rob covering surface representation in detail.

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Fit Model question

The 2025 OpenVSP Workshop has a great presentation by Rob covering surface representation in detail.

6:40 AM

Kilian, … Rob McDonald5

Sep 8

Completely different results for CMy after switching to 3.45.4

Can you provide a simplified test case that exhibits the change you're seeing? Rob On Monday,

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Completely different results for CMy after switching to 3.45.4

Can you provide a simplified test case that exhibits the change you're seeing? Rob On Monday,

Sep 8

Mike Vivaldi, Rob McDonald14

Sep 6

stl face deletion

If you import a Xsec (*.hrm) or Plot3D (*.p3d) file as wireframe (not as a mesh), then OpenVSP will

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stl face deletion

If you import a Xsec (*.hrm) or Plot3D (*.p3d) file as wireframe (not as a mesh), then OpenVSP will

Sep 6

Mike Vivaldi, Rob McDonald2

Sep 6

Result interpretation

There are a bunch of related coefficients with different subscripts. This has changed somewhat from

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Result interpretation

There are a bunch of related coefficients with different subscripts. This has changed somewhat from

Sep 6

Kilian, Mikel Catania3

Sep 5

Aerodynamic Coefficients per Component

Thanks Mikel, I guess you are right. However, I only have VortexSheet 1 to 6 although my model should

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Aerodynamic Coefficients per Component

Thanks Mikel, I guess you are right. However, I only have VortexSheet 1 to 6 although my model should

Sep 5

deenri...@gmail.com, Rob McDonald2

Sep 4

Recovering Crashing Model

Send me the model if you can. Rob On Thursday, September 4, 2025 at 8:14:55 AM UTC-7 deenri...@gmail.

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Recovering Crashing Model

Send me the model if you can. Rob On Thursday, September 4, 2025 at 8:14:55 AM UTC-7 deenri...@gmail.

Sep 4

Mike Vivaldi, Rob McDonald5

Sep 3

convert stl crash

Hi Rob, The documentation I have for the Boeing 707 includes lots of points which I process using

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convert stl crash

Hi Rob, The documentation I have for the Boeing 707 includes lots of points which I process using

Sep 3

Filippo Pattacini, Rob McDonald2

Sep 1

Issue with full-chord rudder

There is not a solution in the near term from the GUI. SubSurface based control surfaces always set

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Issue with full-chord rudder

There is not a solution in the near term from the GUI. SubSurface based control surfaces always set

Sep 1

Shubham Tamboli, Tim Swait3

Sep 1

Elliptical planform in Openvsp

Thanks for the help Tim !! On Monday, September 1, 2025 at 6:52:28 PM UTC+5:30 Tim Swait wrote:

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Elliptical planform in Openvsp

Thanks for the help Tim !! On Monday, September 1, 2025 at 6:52:28 PM UTC+5:30 Tim Swait wrote:

Sep 1

Srinidhi NS, Rob McDonald3

Sep 1

Regarding Moment coefficients in .polar file

Hi Rob, Thanks for your prompt response. Regards, Srinidhi On Friday, August 29, 2025 at 11:12:14 PM

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Regarding Moment coefficients in .polar file

Hi Rob, Thanks for your prompt response. Regards, Srinidhi On Friday, August 29, 2025 at 11:12:14 PM

Sep 1

Sep 1

OpenVSP 3.45.4 Released

Another small bugfix release. This time, none of the fixes are applicable (well, one technically

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OpenVSP 3.45.4 Released

Another small bugfix release. This time, none of the fixes are applicable (well, one technically

Sep 1

Ronald Pandolfi, Rob McDonald2

Aug 31

Possible Instabilities with Panel Method

VSPAERO was essentially unchanged from OpenVSP release 3.34.0 to 3.44.X. It received a major update

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Possible Instabilities with Panel Method

VSPAERO was essentially unchanged from OpenVSP release 3.34.0 to 3.44.X. It received a major update

Aug 31

vrmail...@gmail.com, … Neal Pfeiffer10

Aug 30

Wing Sweep angle discrepancy

Thanks for the additional information Rob! On Saturday, August 30, 2025 at 12:28:02 AM CDT, Rob

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Wing Sweep angle discrepancy

Thanks for the additional information Rob! On Saturday, August 30, 2025 at 12:28:02 AM CDT, Rob

Aug 30

Erick Carlos Da Silva Garcia, Rob McDonald7

Aug 28

vspaero crashing when launch solver

You have both the Thin and Thick sets set to All in this model. Don't do that. All components

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vspaero crashing when launch solver

You have both the Thin and Thick sets set to All in this model. Don't do that. All components

Aug 28

Gerry Beylerian, Rob McDonald2

Aug 28

OpenVSP-3.45.0-win64 Crashing when Opening Files

If you can share an example file that exhibits this behavior, I can try to debug it. Rob On Wednesday

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OpenVSP-3.45.0-win64 Crashing when Opening Files

If you can share an example file that exhibits this behavior, I can try to debug it. Rob On Wednesday

Aug 28

Filippo Pattacini, Rob McDonald2

Aug 27

Problems with rudder design

What version of OpenVSP are you using? Please update to 3.45.3 and report how it goes. Can you post

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Problems with rudder design

What version of OpenVSP are you using? Please update to 3.45.3 and report how it goes. Can you post

Aug 27

Aug 26

Font problem in VSPAERO in v3.45 series, and more

Hi, I've been working with OpenVSP 3.43 series, and am now thinking of switching to 3.45 series.

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Font problem in VSPAERO in v3.45 series, and more

Hi, I've been working with OpenVSP 3.43 series, and am now thinking of switching to 3.45 series.

Aug 26

Aug 26

OpenVSP 3.45.3 Released

Mostly a bugfix release, but with a couple small features for good measure. Version 3.45.X is going

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OpenVSP 3.45.3 Released

Mostly a bugfix release, but with a couple small features for good measure. Version 3.45.X is going

Aug 26

Aug 26

OpenVSP 3.44.5 Released

One more small bugfix release of fixes backported from 3.45.X. One fix might be enough for some

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OpenVSP 3.44.5 Released

One more small bugfix release of fixes backported from 3.45.X. One fix might be enough for some

Aug 26

Mike Vivaldi, Rob McDonald2

Aug 25

Thank you for fixing the STL importer!

No problem. This bug has probably been there since before OpenVSP was Open -- pre 2015 -- in fact, it

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Thank you for fixing the STL importer!

No problem. This bug has probably been there since before OpenVSP was Open -- pre 2015 -- in fact, it

Aug 25

Brian Davis, Rob McDonald4

Aug 22

VSPAERO Issues with wing-body in 3.45.X

Not yet. Dave has done some proof of concept work about 18 months ago that showed promise for thick

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VSPAERO Issues with wing-body in 3.45.X

Not yet. Dave has done some proof of concept work about 18 months ago that showed promise for thick

Aug 22

Zach Hazen, Rob McDonald4

Aug 22

zero control surface deflection - loading and wake discontinuities

I went back and forth with Dave a bit on this. It looks like it is usually just a bookkeeping issue

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zero control surface deflection - loading and wake discontinuities

I went back and forth with Dave a bit on this. It looks like it is usually just a bookkeeping issue

Aug 22

Charles Hollender, Rob McDonald2

Aug 22

OpenVSP: How to smooth small steps created with CompGeom

Can you provide a screenshot of an example of this step -- and the geometries before CompGeom?

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OpenVSP: How to smooth small steps created with CompGeom

Can you provide a screenshot of an example of this step -- and the geometries before CompGeom?

Aug 22

Josh Camp, Rob McDonald4

Aug 22

Issue with inward-facing normals upon intersection

Can confirm issue is gone with 3.45.2. Thanks! Josh Camp Director of Vehicle Engineering josh@

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Issue with inward-facing normals upon intersection

Can confirm issue is gone with 3.45.2. Thanks! Josh Camp Director of Vehicle Engineering josh@

Aug 22

Valentin Ouart, Rob McDonald4

Aug 21

VSPAero error: xDoubleData.size() and yDoubleData.size() must be equal AND greater than 0

Those messages are given by OpenVSP when it is not able to read the output files that should be

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VSPAero error: xDoubleData.size() and yDoubleData.size() must be equal AND greater than 0

Those messages are given by OpenVSP when it is not able to read the output files that should be

Aug 21

Mike Novikov, Rob McDonald8

Aug 21

Mass estimation of FEA structure

Rob, based on your suggestion, I got the new weight of the wing. ...FEA Mesh... Mass_Unit: kg Num_Els

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Mass estimation of FEA structure

Rob, based on your suggestion, I got the new weight of the wing. ...FEA Mesh... Mass_Unit: kg Num_Els

Aug 21

Rob McDonald, … Mike Novikov3

Aug 21

OpenVSP 3.45.2 Released

Thank you for the release! четверг, 21 августа 2025 г. в 08:39:52 UTC+4, Jaime García: Thanks for the

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OpenVSP 3.45.2 Released

Thank you for the release! четверг, 21 августа 2025 г. в 08:39:52 UTC+4, Jaime García: Thanks for the

Aug 21

yusuf blg, Rob McDonald3

Aug 20

Reading the analysis results

Thank you very much so how can i see shaft power ? :) 20 Ağu 2025 Çar 19:57 tarihinde Rob McDonald

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Reading the analysis results

Thank you very much so how can i see shaft power ? :) 20 Ağu 2025 Çar 19:57 tarihinde Rob McDonald

Aug 20

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