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| Title: | How to Calculate Paraboloid Geodesic Domes | |
| Posted on: | 12/11/2008 3:44:17 PM | |
| Category | Questions and answers | |
| Author | sgurysh | |
| Status | Open | |
| Views | 8959 | |
| Replies | (3) | |
| Does anybody out there know how to calculate a geodesic dome over a paraboloid to find chord factors and strut lengths? I''ve heard there is a program called DOME that is capable of doing the math for you, however, the only versions I''ve seen run on open source operating systems, and alas I use Windows. Any help would be great! | |
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| [ Comments 3 ] |
| posted by simon | 12/12/2008 22:06:20 |
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Are you looking to make a parabolic reflector or is it to be a dome shelter? I'll see if I can do as you ask, I've got a project like DOME going in Java at the moment. Had you thought about a trapezoidal dome? The complexity of a geodesic really ramps up once it isn't spherical and the trapezoid of the same form is way simpler. |
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| posted by simon | 16/12/2008 00:20:04 |
 Hi sgurysh Here's a picture, but now you can help me: how do we transfer the information you ask for. I can produce a DXF file but that isn't great if you just want the strut lenghts to go and build one, and I can print the strut lengths as a list, but that's not much help if you don't know how they go together. It's easy with a 3-v spherical geodesic because you can colour code the picture, but that's not really an option when there's a big set of different length. I'd be really interested in your ideas. Simon |
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| posted by sgurysh | 15/12/2011 02:12:06 |
| Wow, I just Googled "geodesic paraboloid" and came to this question, which I apparently asked 3 years ago and forgot about it. Weird. Anyways, sorry for the late response, hah. Three years ago I was making a geodesic solar cooker, but ended up going spherical. Right now I'm trying to make a geodesic parabolic speaker. I realize you can buy these prefabricated, though not geodesic. I'm more interested in making one myself. What I'd like to do is create a template of all the triangles as vectors in Adobe Illustrator and print them out using a lasercutter. But to get to your question...would there be a way for your program, or could you modify your program, so that it printed out or rendered the paraboloid and labeled each strut with a letter, which could then be referred to on the .dxf file? Also, in regards to using this program for laser printing, could your program render the triangles flat, on a single plane, unassembled so to speak. I'm thinking someone could just take that image and scale it up or down in an editing program. | |
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