script for creating geodetic parabolic disch

[Kunstmaan]

I need some guidance on how to create a parabolic dish sing alibre script.

Looking for a ols Wizo script but not able to find it

Mareike

 

[NateLiquidGravity]

Does this help?
https://support.alibre.com/support/solutions/articles/27000049710-geodesic-dome-reference-geometry

 

[idslk]

Hello Mareike,
you've asked this before...and i haven't seen new things here in the forum
Myself has not done such a dome. The nearest from my side wasthis...
Maybe you try to search for "Professional Dome Plans -- Building geodesic domes made easy."
It sounds like a joke, but there you should find a lot of Infos...
Regards
Stefan

 

[Lew_Merrick]

I need some guidance on how to create a parabolic dish sing alibre script.

Hi Mareike -- A "geodesic" won't be much of a paraabola (except in the grossest of terms). A tue parabola has the (general) equation of X, AX²+B. Figuring out what your needed values of "A" and "B" will be the hardest part of the problem. Turning the resulting parabola into a "Geodesic" depends on the required overall accuracy. ??? -- Lew

 

[Kunstmaan]

Hi Mareike -- A "geodesic" won't be much of a paraabola (except in the grossest of terms). A tue parabola has the (general) equation of X, AX²+B. Figuring out what your needed values of "A" and "B" will be the hardest part of the problem. Turning the resulting parabola into a "Geodesic" depends on the required overall accuracy. ??? -- Lew

On the 'old' WIZO script website there was a paraboluic script and that is where I am looking for

 

[idslk]

Hello @Kunstmaan , Hello @Lew_Merrick ,
wasn't this the solution?
Regards
Stefan

 

[idslk]

Hello @Kunstmaan , Hello @Lew_Merrick ,
or this
Regards
Stefan

 

[Lew_Merrick]

Hello @Kunstmaan , Hello @Lew_Merrick ,
wasn't this the solution?

Hi Stefan -- Either of your references get a parabola drawn -- but turnung it into a geodesic is a different issue. -- Lew

 

[idslk]

Hello Lew,

you can trust me, i really know that, but i only want to point that you both have been disscussing about parabolic splines...
and there is also this thread Look here
and you have also been involved there too...

but turnung it into a geodesic is a different issue

and therefor i have recommended to search for

"Professional Dome Plans -- Building geodesic domes made easy."

Regards
Stefan

 

[Lew_Merrick]

you can trust me, i really know that, but i only want to point that you both have been disscussing about parabolic splines...

Hi Stephan -- I admit that I often complain about the "inaccuracies" implicit in using a nominal cubic spline to approximate a (say) parabolic or (say) involute entity. A Wronskian curve creates a "better fit" for many such entities. This is a different (and much more complicated discussion) than answering Mareike's question. -- Lew