RE: [PSUBS-MAILIST] stress levels in a concrete submarine yacht hull - troll

[MerlinSub@t-online.de]

Hi Jay - I was thinking on a concrete realy deep diver 
- and for a deep diver a diver exit chamber makes no sence. 

I think a concrete sub should have a minimum wall thickness to 
resistant local impacts like from a kai or an other ship or so. 

So for me it is clear that a concrete sub is someone "big". 

Maybe an autonomus Psub - but clear not K-Size sub. 

regards Carsten 

"Jay K. Jeffries" <bottomgun@mindspring.com> schrieb:
> Wilfried,
> 
> While we have been talking about your submarine hull and Troll, these
> structures depend on the great compressive strength of concrete.  Concrete
> doesn't due well under tension (this is why concrete panels are pre-stressed
> and glass fibers are added to improve concrete's ability to resist tension
> loads).  How would you propose using concrete to accommodate Carsten's
> lock-out chamber that is also used for decompression (which would put the
> concrete deco pressure vessel under tensional load when the sub returns to
> the surface while still maintaining divers at some greater depth of
> pressure)?
> 
> R/Jay
> 
>  
> 
> Respectfully,
> 
> Jay K. Jeffries
> 
> Andros Is., Bahamas
> 
>  
> 
> It is the mark of an educated mind to be able to entertain a thought without
> accepting it.
> 
>   - Aristotle
> 
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> -----Original Message-----
> From: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org] On Behalf Of
> clientes@tolimared.com
> Sent: Tuesday, February 13, 2007 6:29 PM
> To: personal_submersibles@psubs.org
> Subject: [PSUBS-MAILIST] stress levels in a concrete submarine yacht hull -
> troll
> 
>  
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> 
> stress levels in a concrete submarine yacht hull - troll
> 
>  
> 
> Oystein, this calculation takes my sub to a working depth of 606m - anyhow i
> 
> would not trust the viewports for such a depth... but this shows that you
> can
> 
> get manageable stresslevels similar to TROLL in a concrete pressure hull
> that
> 
> goes to 606m with a yacht configuration - still not using spheres as
> pressure
> 
> hull as in deep diving configuration.
> 
> Wilfried
> 
>  
> 
> 





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