[PSUBS-MAILIST] Hull Calc: 78" spheres

[Sean T. Stevenson via Personal_Submersibles]

On 2015-01-09 18:16, swaters at waters-ks.com via Personal_Submersibles wrote:
> Sean,
> Can I ask you to do one more calc for me? 516 gr 70 sphere, 1" thick, 72" diameter. 
> The 78" was not within ABS rules at 1000m. I think the 72" might just make it, yet give me more boyancy than the 60"
> Thanks,
> Scott Waters
Not sure where you're going with this.  The 60" sphere doesn't even make
it at 1" thickness.  A 72" definitely won't.

72" OD, 1" wall, ASTM A516 Grade 70:



Just out of interest, I checked how small a sphere with 1" thick hull
would need to be to get you to 1000m.  Turns out it's about 50 inches:



Sean

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20150109/fb13cc4f/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: jjbaggdb.png
Type: image/png
Size: 83086 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20150109/fb13cc4f/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: gfiaiabb.png
Type: image/png
Size: 92306 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20150109/fb13cc4f/attachment-0003.png>