[PSUBS-MAILIST] Program

[Sean T. Stevenson via Personal_Submersibles]

What are you making?

As I mentioned, the DW hulls are segmented according to a cube projection, so a complete sphere would have six segments / sides and eight vertices, and three times the welding (and subsequent 100% NDT inspection) that two hemispheres would require.

You need a template for cutting, and an accurate jig for welding them together.

Did you get hemispheres supplied out of spec? Or is this a new project?

Sean



On October 22, 2015 4:15:08 PM MDT, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Sean,Do you know how many sections a DW hull has and what is the
>technical name for what I want to do.  I will ask EE if they will make
>the pieces. I think Dr Nuytten calls them woks?  I want to sound like I
>know what I am talking about :-)Hank 
>
>
>On Thursday, October 22, 2015 12:27 PM, Sean T. Stevenson via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>   
>
>That's just a construction. Any regular polydehron that fits in your
>sphere can be used as a guide. Nuytco uses a cubic projection, so if
>you imagine a cube where all of the vertices touch the sphere, the weld
>lines are the great circle routes between vertices.If two hemispheres
>don't work for you, the next lowest part count you can go to is four,
>corresponding to the tetrahedron projection.Sean
>
>
>On October 22, 2015 11:49:51 AM MDT, hank pronk via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>| Sean, do you have a program that will disect a sphere into equal
>sections like the DW. I am looking for a way to cut hemis into equal
>sections to create a new sphere. When we buy heads they have full
>cerumference dent caused from changing the dies. I am thinking about
>buying three heads to make one perfect sphere. |
>
>
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