How to translate enclosed spline while keeping shape the same?

How to translate enclosed spline while keeping shape the same?

mdob353
Explorer Explorer
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Message 1 of 7

How to translate enclosed spline while keeping shape the same?

mdob353
Explorer
Explorer

I am trying to make an airfoil with parameters. I have a spline and I want to be able to move, translate and scale the whole shape without changing the shape of the spline. If I dimension the leading edge it just ends up moving that one point in the spline instead of moving the whole shape. The fix constraint locks the shape in place so I can't move it. Is there a function or a script that can do that?

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Message 2 of 7

TrippyLighting
Consultant
Consultant

Extrude a surface (or solid) from the sketch and then scale the 3D object. Precise lengths can be achieved with a littel bit of math in the scaling formula.

Then you can work with the edge of that surface/solid for lofting your wing.

 


EESignature

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Message 3 of 7

mdob353
Explorer
Explorer

Any way to do this in sketch mode? I want to be able to change parameters like the location of the leading edge, chord length and AOA later on and have it change the whole wing.

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Message 4 of 7

TrippyLighting
Consultant
Consultant

Nope.


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Message 5 of 7

jeff_strater
Community Manager
Community Manager

I won't say that it is impossible, but with that many fit points, it will be difficult.  With fewer fit points, and lOTS of sketch dimensions, you might be able to come up with a sketch that is parametric enough to fulfill those requirements.  Also, fit point splines are sometimes fiddly.  Control Vertex Splines are perhaps easier to deal with.

 


Jeff Strater
Engineering Director
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Message 6 of 7

mdob353
Explorer
Explorer

Any way to group the whole thing together and move it independently, like with sketch blocks in inventor? I don't need to scale it

 

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Message 7 of 7

etfrench
Mentor
Mentor

Put the sketch in a component, then you can position the component and its copies, preferably with joints.

ETFrench

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