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devCad can import/export dat files, so this can be a solution to modify airfoils using more advanced fetuares than Profili.
When you export a polyline to a .dat file you will be prompted if you like to use the original size or to scale it to the x range 0.0 ~ 1.0
This is the right option if you must then import that in Profili like an airfoil.
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Hi,
I have made a.DAT file in DevCad. I say Yes to normalizing the DAT file. When I try to import it to DevWing I get a message First Upper X not equal to Zero and then I get a message First Lower X not equal to zero.
Do you have any suggestion about what I am doing wrong?
Thanks,
George Adam
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Did you follow the rules to draw the airfoil in the right way?
Probably not.
devCad doesn't force airfoil rules, ad a dat file can also describe a different shape, for other use.
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Thanks for your very fast reply.
I made the airfoil by tracing around a raster scan. I cleaned up the trace and made the whole trace into a polyline.
Can you tell me where I can find the rules that define how to draw the airfoil in the right way?
Thanks.
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Main rules:
- horizontal chord
- TE on the right
- Start and end of polyline on TE
- counterclockwise direction
- smooth curve
- TE opened if has not 0.0 thickness
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Thanks.
Now works well!
Thanks for such a quick result.
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5 replies since 6/4/2013, 16:53 435 views
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