Re: [PSUBS-MAILIST] 200ton 18meter Live aboard submarine

[MerlinSub@t-online.de]

Hi Sean 

Look at this drawing : 

http://www.euronaut.org/content/gfx/technic/1.jpg

The grey bow nose is the anti collison bulkhead with strong stiffenes in front of it in the grey part. After this comes the green tank - the soft ballast tank. Is the force higher than the collison bulkhead can resistant, say over 6 knots  - this tank will collapse with the impact until the metall reach the red cylinder. The red cylinder is the heavy build hardtank and build with the thruster tunnel pipe below a very heavy t-cross. The boat will survife the destroying of the green tank. All I have to do is to counter flood the aft soft tank. The boat will still surface on the empty red hard tanks and maybe I have to drop one, two or all three keel plates. If the red barrier tank is also destroyed the boat can still survife with the drop keel gone. And is the force is higher - maybe a fast big freighter.. There is still the heavy buld diver chamber.. 
The stern concept is nearly the same.  :-)  

best regards Carsten


"Sean T. Stevenson" <cast55@telus.net> schrieb:
> Carsten - I had been meaning to ask you this question about Euronaut - 
> presumably, you designed your bow structure to this recommendation?  In the 
> event of a 3-4 knot impact, is there energy absorption through buckling of 
> the steel by design, or is the entire structure strong enough to stay below 
> yield?  Also, since a likely scenario for sub collision is not a straight 
> head-on impact but rather a strike close to the bow point, but at some angle, 
> would you consider (or did you employ) additional hull stiffening throughout 
> the entire bow section?
> 
> --Sean
> 
> 
> On December 29, 2007 03:28:00 MerlinSub@t-online.de wrote:
> > And the bow area should designed that way that the 200 ts
> > concret hull can survive a impact of around 3-4 knots.
> >
> > For this reason most suface ships have a collison bulkhead.
> > On a concret sub I would say make the bow area strong.
> >
> > regads Carsten
> 
> 
> 
> ************************************************************************
> ************************************************************************
> ************************************************************************
> The personal submersibles mailing list complies with the US Federal
> CAN-SPAM Act of 2003.  Your email address appears in our database
> because either you, or someone you know, requested you receive messages
> from our organization.
> 
> If you want to be removed from this mailing list simply click on the
> link below or send a blank email message to:
> 	removeme-personal_submersibles@psubs.org
> 
> Removal of your email address from this mailing list occurs by an
> automated process and should be complete within five minutes of
> our server receiving your request.
> 
> PSUBS.ORG
> PO Box 53
> Weare, NH  03281
> 603-529-1100
> ************************************************************************
> ************************************************************************
> ************************************************************************
> 
> 




************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.

PSUBS.ORG
PO Box 53
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************