[PSUBS-MAILIST] Hull Calc: 78" spheres

[hank pronk via Personal_Submersibles]

Sean,
EE did my parts and my dome was quite bent when sitting on the bench.  They told me too bad, it is within ASME specs.
Hank--------------------------------------------
On Fri, 1/9/15, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Hull Calc:  78" spheres
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Friday, January 9, 2015, 9:24 PM
 
 I never thought to add the functionality to solve
 for diameter. I'll have to look into that.
 I'll run your calc. Stay tuned.
 Sean
 
 
 
 
 On January 9, 2015 6:16:50
 PM MST, "swaters at waters-ks.com via
 Personal_Submersibles"
 <personal_submersibles at psubs.org> 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
 
 Sent from my U.S.
 Cellular® Smartphone
 
 -------- Original message
 --------
 From: "Sean T. Stevenson via
 Personal_Submersibles"  
 Date:01/08/2015  8:28 PM  (GMT-06:00) 
 To: Personal Submersibles General Discussion 
 
 Subject: Re: [PSUBS-MAILIST] Hull Calc: 
 78" spheres 
 
 
     On 2015-01-08
 19:01, via
       Personal_Submersibles wrote:
 
     
     That's what I got.
           Only without the format. Sweet. Thanks Sean.
 It's going to
           take a syntactic buoyancy package to get it right,
 but it
           looks like a decent alternative. A 6 1/2 foot
 sphere displaces
           about a thousand pounds more than the pair of 5
 footers.
           Pretty close, and might be marginally less
 expensive. What
           would a 39" radius do for depth in the
 thicknesses you have
           already given?
         Vance
 
         
       
     
 
     As
         requested:
 
         
 
         ASTM A516 Grade 70, 78" sphere, 0.75"
 wall:
 
       
 
     
 
     
 
     ASTM A516 Grade 70, 78" sphere, 1" wall:
 
     
 
     
 
     HY-100, 78"
         sphere, 0.75" wall:
 
     
 
     
 
     HY-100, 78" sphere, 1" wall:
 
     
 
     
 
     Sean
 
     
 
   
 
 
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