PROP tab issue - VSPAero

[Ndubisi 'Arinze' Eze]

Hi everyone,
I'm a newbie and having a tad of a problem repeating Rob and Brandon's little tutorial here:
https://www.youtube.com/watch?v=5FNK2IIkJv8

The issue is when I try to change the propeller RPM from the default 2,000 (to 860) as shown in the screen grab below and click the enter button, the value refuses to register.  Instead it just bounces back to the default value.

As Rob and Brandon suggested in the tutorial, I selected 'blades' in the PROP Advanced tab and the 'Rotating Blades' checkmark (yellow) was also selected.  However, editing the RPM with/ without 'Uniform RPM' was to no avail.

Please see images attached.  I have also attached the .vsp if anyone wants to look at it directly.  Thank you!

Kind rgds,
Arinze 

[Brandon Litherland]

Ooookay.  Not sure how this hasn't been caught before.  Genuinely confused because I'm almost certain that I've run symmetric propeller unsteady cases recently.

I'm seeing this behavior all the way back to 3.29 (new VSPAERO release). Version 3.28.0 does not show this behavior.  But that would imply that this problem has been present since July 26, 2022 and no one said anything.  That doesn't make any sense. It's also doing it in the new 3.35.0.

There is a weird alternating Update reset to the propeller RPM parm  when you try to select the Surf 1 Prop but it also does it when you orbit the model but not pan.

You're running Windows.  If someone with the Mac version isn't seeing this, then I'm concerned that a recent Windows update changed something behind the scenes which broke the GUI.  It's really specific to this one parm though.  For example, symmetric Props modeled in Disk mode, with Actuator Disk selected does not exhibit the same behavior.  I can't think for the life of me why it would be doing this.  The only thing I can think to try is rebuild a new version since the Windows update to see if that makes any difference.

In the meantime, this seems to be limited to all symmetric copies of a propeller.  If you model each propeller individually, you can set the RPM with Uniform on or off.

[Brandon Litherland]

Rebuilding did not solve the problem.

[Rob McDonald]

Thanks for digging further into this.

I'm pretty sure there are bugs with symmetrical props anyway -- so you're going to want to model them as separate duplicate props for now.

Brandon -- would you mind creating an Issue with these details (and a link to this thread)?

Thanks,

Rob

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[Brandon Litherland]

Done.

[Ndubisi 'Arinze' Eze]

Thanks Rob and Brandon.  However, I'm not sure if this bug has been solved and I'm missing something.  Following the tutorial once more, I just tried a new attempt to change the Propeller RPM from the default 2000 to 860 to no avail.  

Your suggestion will be greatly appreciated.

r/

Arinze

[Brandon Litherland]

Currently, the best way is to model the props individually.  The bug fix for this will be announced with the release when fixed.