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Lofting or mesh

zrhffsr
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Lofting or mesh

zrhffsr
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Hi there, 

As a new 3D user I am...

 

1.  Having difficulty lofting or applying mesh surface to the attached "wing_edg" dwg

2.  Also is it possible to continue a loft from an existing straight extrusion without braking separating the whole polyline object.    when I click on the profile of the already extruded  in order to continue as loft, it wont let me.   

 

Any advise input appreciated.

 

  

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Soluciones aceptadas (3)
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7 Respuestas
Respuestas (7)

j.palmeL29YX
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Solución aceptada

At the right end the middle curve runs below the ZY plane and outside the shape lying in the ZY plane. No meaningful 3D model can be created from these given curves. Check and correct your input data. 

>>Video<<

 

 

 

Jürgen Palme
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leeminardi
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Split the bottom 3dpoly into 2 objects as shown below. The red and green curves were one 3dpoly in your original drawing.  Then use LOFT and pick the 3 profiles.

leeminardi_1-1672676941501.png

 

I was successful at creating a surface but the end profile does not define an arc as I think you want.

leeminardi_2-1672677017924.png

I tried using the cyan arc that intersects the planes of the sections but as the path for the loft but the geometry was deemed invalid.  You might have better control of the wing tip by using additional wind cross sections.

 

I agree with @j.palmeL29YX that the geometry at the trailing edge is problematic.  I don't think the wingtip should have an indent as you define it.  I also think it would be better to use splines rather than 3dpoly objects for defining the sections.

 

Good luck!

 

lee.minardi

zrhffsr
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Thanks for the input, Lofting between the 2 (white) arks works. Can add more arks towards a few mm of either ends which will just about do the job. I will have to figure out how to loft of mesh the ends.
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j.palmeL29YX
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Solución aceptada

@zrhffsr wrote:
I will have to figure out how to loft of mesh the ends.

 

The one side can be done >>this way>>

The other side is not possible because of ... see >>above<<

Jürgen Palme
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zrhffsr
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Adding lots of arks along the airfoil contours took some time and lofting through them did the job,  the 0.5mm at either end will deal with it on the STL platform.

* Tried to attach the DWG file in this posting, but it wouldn't let me.    

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j.palmeL29YX
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@zrhffsr wrote:

Adding lots of arks ... did the job,     


Besides the added arcs - you obviously also modified/repaired/corrected/changed the "old" geometry which I pointed to above. So we have of course a completely new situation ...  :cara_guiñando_un_ojo: 

Nice that you could solve your problem. 

 

Jürgen Palme
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