[PSUBS-MAILIST] buoyancy

[Sean T. Stevenson via Personal_Submersibles]

I am very familiar with TLAR. I often TLAR things myself... just not to
four significant figures.

Sean


On 2015-11-11 12:44, Hugh Fulton via Personal_Submersibles wrote:
> Sean,
> We have a New Zealand developed programme for design that is widely used in
> the pacific islands where Kiwis (NZ'ers) are involved. It covers piping,
> fabrication, ditch digging, construction of most things.  It is called
> "TLAR".  No guarantees go with it.
> Hugh 
> 
> 
> 
> -----Original Message-----
> From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
> On Behalf Of Sean T. Stevenson via Personal_Submersibles
> Sent: Thursday, 12 November 2015 8:26 a.m.
> To: Personal Submersibles General Discussion
> Subject: Re: [PSUBS-MAILIST] buoyancy
> 
> Alan, how did you do that calculation?  What layer count, thickness,
> component volume fractions and principal fiber orientations did you use?
> 
> Sean
> 
> 
> On 2015-11-11 12:15, Alan James via Personal_Submersibles wrote:
>> Hank,
>> I did a quick calc on a sphere of nominal dimensions made of epoxy / 
>> fiberglass.
>> With external pressure it had a depth of 4347ft, with internal 3785ft. 
>> I should have posted the results in psi, but you get the picture.
>> The big thing to me would be that if you ruptured it by hitting 
>> anything, or so it failed, you would go down like a lead balloon.
>> Alan