Duplicate and scale

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Bertrum
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Joined: Thu Jul 09, 2020 10:39 am

Duplicate and scale

Post by Bertrum » Thu Jul 09, 2020 10:55 am

Hello I am using version 3.24.3.0 on a Mac. I use QCAD to draw model aircraft plans. I am trying to find a way to take a wing rib and duplicate it and scale it at the same time to create all the ribs for a tapered wing. I hope you understand what I'm trying to do. I have attached a top view of wing ti illustrate. I have not drawn the rib profiles yet.
Screenshot 2020-07-09 at 10.51.57 am.png
Screenshot 2020-07-09 at 10.51.57 am.png (1.04 MiB) Viewed 2349 times
Tim

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andrew
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Re: Duplicate and scale

Post by andrew » Thu Jul 09, 2020 12:02 pm

Perhaps through morphing? Just a thought as I've solved similar problems with the morph tool:
https://qcad.org/en/tutorial-morphing

Bertrum
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Re: Duplicate and scale

Post by Bertrum » Thu Jul 09, 2020 12:17 pm

andrew wrote:
Thu Jul 09, 2020 12:02 pm
Perhaps through morphing? Just a thought as I've solved similar problems with the morph tool:
https://qcad.org/en/tutorial-morphing

Thanks, that looks promising.

CVH
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Re: Duplicate and scale

Post by CVH » Thu Jul 09, 2020 12:41 pm

Hi,

The problem will be that an offset of an airfoil shape is not a new correct airfoil shape.
Although it looks that way for us. :wink:

I don't know if morphing will level out the differences good enough.
A little off has a huge impact.
There are calculators for that.

Regards,
CVH

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