[PSUBS-MAILIST] K3000 spherical shell calculations

[Hugh Fulton]

Hi Sean,  that is a sexy programme.  Is it a rendition of the one on psubs
with Visual basic or another programme that you have developed?  Love this
stuff.  Regards,  Hugh

 

 

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of Sean T. Stevenson
Sent: Thursday, 10 April 2014 4:58 p.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] K3000 spherical shell calculations

 

Further to this discussion, additional safety factor or design crush depth
beyond the ABS maximum allowable working pressure may be a moot point in
this example, as the payload capacity (net buoyancy) of the shell in
question (A516 grade 70, 6' inner diameter) becomes negatively buoyant at
only 1152 m working depth, meaning that if you design for deeper than that,
the shell becomes heavy enough that you need supplemental buoyancy to stay
afloat.  With HY-80, the situation improves significantly, extending depth
to 2347 m before going negative.







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