Re: Re: [PSUBS-MAILIST] ambiant presuure sub

[SIMON WALKDEN <mrsym0r@gmail.com>]

People have used fibreglass for submarines - visit http://www.ivccorp.com

They produce ambient submarines using fibreglass composites.

They're always very helpful when I ask them questions about their
submarines; maybe they can help you out.

-Simon

On Apr 6, 2005 9:35 PM, jurba@club-internet.fr <jurba@club-internet.fr> wrote:
>  
>  
> Hi emile and all 
> , 
> Welcom to this group. 
> I can awnser some of your questions, 
>   
> thanks for welcome , in fact it is somewhere difficult for a newbe like you
> to discuss sutch big subject with guys like all of you  . 
>   
>   
> 
> So the max difference of  pressure would be 2 amtos 
> 
>   
> 
> as anybody ever used fuelcell bateries? 
> 
> ---As far as I know nobody on the list. yes we want to.... 
> 
> We wait for cars and home micro powerplants with F/C 
> 
>   
> 
>   
> 
> Well in fact in this subject we have a small experience for we have
> participated to a few meetings of human powered boats and subs where we met
> a couple of guys working on fuelcells. 
> 
> we are in contatc to built an underwater unit for cavern divers   . 
> 
>   
> 
> new fuelcells are smaller ligther and cheaper . 
> 
>   
> 
>   
> 
> last question , we are planing to construc the hull in epoxy fiber glass for
> we are used to build boats like that , 
> 
>   
> 
> is that a good idea ? 
> 
> for a ambient sub fiberglass is ok. For a 1 atm. sub most people on the list
> prefer steel. Fiberglass is ok. for 20 M. but has the disadvantage of
> ageing, bad impact resistance and repairs/modifications are weaker than
> original. 
> 
> With steel it is relative easy to make a 60-100 m sub. 
> 
> Kraka from Peter Madsen has a dive lock out and is also a combined ambient/
> 1 atm sub. (whole interior pressurised) 
> 
>   
> 
> In fact the sub will be ambiant during the divers stay enabaling the divers
> to get out and in freely, but at the end of the stay the doo must be closed
> and the pressure reduced little by little fir deco, so at the end of the
> dive the bub will be one atmos. 
> 
>   
> 
> on the other hand the sub will be fixed at a max of 20m enabling free time
> dives down to 55m . 
> 
>   
> 
> steel ha ok this is what i noticed looking to all your nice subs,  
> 
>   
> 
> Fiber glass resistance depends on several datas and it can be seriously
> caclulated to be meet the resitance requirements after the construction and
> in time. 
> 
>   
> 
> In addition the unit will be small in size (5m) reducing the problems. 
> 
>   
> 
> But your remark about steel make me think about the opportunity of doing the
> job in fiberglass. 
> 
>   
> 
> as a atter of fact in nobody has used fiberglass for subs it is puzzling... 
>  
> 
>      
> 
>   
> 
> regards 
> 
>   
> 
> jean michel 
> 
>  
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