Parabolic dish
Parabolic dish
(OP)
Good day,
I am currently creating a parabolic dish from six sixty degree petals/segments. However I cant seem to get the correct flat pattern of such a segment. I created a pizza slice type flat pattern, but this created gaps in my dish. I realised I had to create a triangular shape with arcs of certain radii on all three edges but have no idea how to get this shape's geometry?
Any help will be appreciated.
I am currently creating a parabolic dish from six sixty degree petals/segments. However I cant seem to get the correct flat pattern of such a segment. I created a pizza slice type flat pattern, but this created gaps in my dish. I realised I had to create a triangular shape with arcs of certain radii on all three edges but have no idea how to get this shape's geometry?
Any help will be appreciated.





RE: Parabolic dish
another day in paradise, or is paradise one day closer ?
RE: Parabolic dish
B.E.
You are judged not by what you know, but by what you can do.
RE: Parabolic dish
I know that in the past, CE's matriculated in schools of engineering were required to take mechanical drafting including descriptive geometry, so if you know a CE ask him to help you.
RE: Parabolic dish
RE: Parabolic dish
I take it this is approximately parabolic, as opposed to exactly parabolic? Also, I take it you are trying to model this thing in CAD.
Read up on parabolae. You can model them from first principals, using whatever characteristics made you decide to do parabolae. Another approach is to model a solid parabola, cut faces off, hollow it out then convert it to sheet metal.
Before I realized SolidWorks did parabola, I modelled a curve that reflected collimated light rays all through one point.
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JHG
RE: Parabolic dish
RE: Parabolic dish
RE: Parabolic dish
RE: Parabolic dish
another day in paradise, or is paradise one day closer ?