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2013: Can anyone constrain this R/C helicopter rotor?

6 REPLIES 6
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Message 1 of 7
WHolzwarth
1485 Views, 6 Replies

2013: Can anyone constrain this R/C helicopter rotor?

I've struggled several hours, but no success. Inventor 2013 seems to be beyond it's limits.

 

See Picture. There are 4 inputs:

- Rotation of the main shaft

- 3 servo movements at the balls of the green part. Rotation of the green part around the main shaft is locked.

 

The paddle (orange) can swivel freely around it's  axis. If you have access to a real model, you can realize it.

 

What do I want to see at first?

Rotation of the main shaft, with no change of the 3 servo movements. But even this I can't get to work.

 

Try this:

- Ground the main shaft

- Grab the red linkage by mouse. You can move one of the rotor blades.

- Grab  Blatthalter.iam:21 by mouse and move it. It's moving

- Now do a center point -to - center point constraint between the red ball and the free end of the red linkage

 

You get a constraint error, and I've seen no way for a solution.

 

Smiley Sad But that's what we need, in my eyes.

Walter

 

Files can be downloaded from here:

http://www.holzwarth-cad.net/Joomla/media/download/Rotor.zip

 

Walter Holzwarth

EESignature

6 REPLIES 6
Message 2 of 7
blair
in reply to: WHolzwarth

There seems to be a number of files missing, a number of the files with Russian names, all the parts with German names are included in the zip file


Inventor 2020, In-Cad, Simulation Mechanical

Just insert the picture rather than attaching it as a file
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Delta Tau Chi ΔΤΧ

Message 3 of 7
WHolzwarth
in reply to: blair

Ouch! That seems to be an issue with my Zip version.

I'll come back in a few hours

 

Thanks, Blair

Walter

Walter Holzwarth

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Message 4 of 7
WHolzwarth
in reply to: WHolzwarth

Zip file has been changed now, same link as before.

 

Sorry for the confusion

Walter Holzwarth

EESignature

Message 5 of 7
WHolzwarth
in reply to: WHolzwarth

Another need for an update. The former file Koppel A - 24,5mm.iam wasn't accepted by my Winzip version, because of A being an invalid character Smiley Surprised

 

Now it's named Koppel 24,5mm.iam, but a new Rotor.iam is needed in the Zip, too. It's changed

Walter Holzwarth

EESignature

Message 6 of 7
henderh
in reply to: WHolzwarth

Hi Walt,

 

  If you use WinRAR or 7zip, it won't munge non-ascii file names.  I believe both are free downloads.

 

Best regards, -Hugh



Hugh Henderson
QA Engineer (Fusion Simulation)
Message 7 of 7
WHolzwarth
in reply to: henderh

That's no problem anymore, Hugh.

I've renamed the files with Russian names. The Zip at the download link should be ok now.

Meanwhile I made some changes, and added angular limitations for flipping prevention. But the problem still exists.

 

I've uploaded a new file set with the changes. Try to move the angle Rotordrehung by constraint. No luck. But after suppressing, you can move the rotor shaft by mouse without problems.

 

And that's just the beginning. I've been thinking of changing the position of  the 3 balls of Taumelscheibe 2.iam, too. Far away from this.

 

Updated files are here:

 

www.holzwarth-cad.net/Joomla/media/download/Rotor-BF.zip

 

Thanks for further looks

Walter

Walter Holzwarth

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