I forgot. What are the dimensions of the chord, height and diameter of the turbine?
I was kind of out of life and now that I'm back on the internet I've seen your assignment. Let me get home and I'll make a basic model.
Do you need just the blades? In which format do you prefer to have it?
brother paul wrote:how is that command in freecad ?
how is that command in freecad ?
I don't know. That is just a command in SolidWorks.
where is the 3d file
i was thinking, evidently when you make a model to be printable, you need to think about the 'inside' of the blades. you should make them hollow but structuraly strong enough, fe 3-5mm thick and internal supports.
i got it, i don't hav good cad software...
More recent 3D CAD packages allow for helical extrusions. I've had pretty good results using just 60 data points for a blade, 90 should be plenty for something to be pretty. You then take that profile and sweep it along a helical path. To get the new profile, I imagine you would create a plane perpendicular to the helical path and slice the solid.
ok i have the following problem...
the description of the assignment is in the pdf
and the 3D model is in the wrl file
just discuss how you could do this ? Don't feel obliged
i have no problems to create an naca2420 airfoil in cad, just import the coordiantes files, but i don't get it how i can make it helicoidal ?