[PSUBS-MAILIST] model testing

Wed Dec 31 06:26:00 EST 2014

Brian, 

we have each two cardridge in the exchange filters for the mask.
One is unse in case of fire against smoke or in case of battery clorine
or other gases.
And the other cardridge we customize to absorb CO2 in case main LSS
filter didnt work anymore.
They are military surplus from Finland and came brandnew for just some
bucks. 

During building I have a fire in a bed madraze becuase of weölding close
by. 
The smoke fill the compartmnet in seconds with no view anymore and
nearly unbreathable atmosphere. 

But we have also a scuba automat lifeline system on 6 station on board
in case of fire or out of oxygen situation. 
And mobile fire extingusher and a high fog mist fire fighting system in
each compartment. 

Also Steinke Hoods, diver suits, diver scuba equipment, 1 liferaft, 1
inflate rubber boat,
3x 1ts drop weights, Emergency oxygen bottles for weeks, emergency CO2
filters (we double it - 4 in total) 
Last but not least a first aid set from a car. And most inportant a
complet workshop in the engine room. 
The diver exist room can be use as rescue chamber wit a mirror of all
systems for air, oxygen, filters on its own. 

On the future plan are a complete set from a Ambulance car including
defilibrator, oxygen inhalator, medicine etc. 
We get older and on real offshore operation we are maybe far awawy from
other ships and pepole and have to fix our problems ourself.. 

I have a book abouit emergency situations on civil submarine from
russia. 
There major accident clear to identfy: 
- Fire on board, 
- boat catch on the bottom  
- diving with open hatch or launching accident. 

Deep charges or torpedos seems not an issue for privat submarines - so
we not have equipment to prevent that.. 
(I write this line so I can be sure that this email will be stored in a
mountain in Montana for ever..) 

There are many old submariners and there are many brave submariners. 
But there are not so much old and brave submariners.. 
(Okay I steal this from the pilots..) 

vbr Carsten

"Brian Cox via Personal_Submersibles" <personal_submersibles at psubs.org>
schrieb: 
Carsten,   What to you use the gas masks for?

Brian

--- personal_submersibles at psubs.org wrote:

From: "Carsten Standfuß" via Personal_Submersibles
<personal_submersibles at psubs.org>
To: "Personal Submersibles General Discussion"
<personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] model testing
Date: 30 Dec 2014 19:08 GMT

If the scale factor is 1:1 it shall work.. :-0

 vbr Carsten

"hank pronk via Personal_Submersibles" <personal_submersibles at psubs.org>
schrieb:
> 
> I am not looking for drag comparisons, I am looking for failure due to pressure comparisons. I though I read that the Nekton subs were built as a model first to establish crush depth.
> Hank --------------------------------------------
> On Mon, 12/29/14, Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Subject: Re: [PSUBS-MAILIST] model testing
> To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
> Received: Monday, December 29, 2014, 3:06 PM
> 
> Drag
> results between a model and full scale does not scale
> geometrically.  You have to scale model and full scale off
> the dimensionless  Reynolds number.   Reynolds number
> scaling enables you to scale results between model and full
> scale using either a water tunnel or air
> tunnel.
> Cliff
> 
>  
> 
> From: Alan James via
> Personal_Submersibles
> <personal_submersibles at psubs.org>
> 
> To: Personal
> Submersibles General Discussion
> <personal_submersibles at psubs.org> 
> 
> Sent: Monday,
> December 29, 2014 1:55 PM
> Subject: Re:
> [PSUBS-MAILIST] model testing
> 
> 
> Hank,I just ran
> a test on my pressure program & you get the same crush
> depthon a
> sphere of A516-70 steel that is 1000mm diameter & 10mm
> thick as youdo on a
> sphere 100mm diameter & 1mm thick.What I am
> not sure of is if you can scale up the drag results on a
> model.If you
> have a scale model that is 1/50th & it takes X amount of
> force to push
> it at 3
> knots, can you multiply X by 50 to get the required
> thrust?Alan
> 
> 
> 
> From: Brian Cox via
> Personal_Submersibles
> <personal_submersibles at psubs.org>
> 
> To: Personal
> Submersibles General Discussion
> <personal_submersibles at psubs.org> 
> 
> Sent: Tuesday,
> December 30, 2014 8:43 AM
> Subject: Re:
> [PSUBS-MAILIST] model testing
> 
> 
> Hank,
>       I would say
> no.  It would have to be so exact that it would be
> virtually impossible to extrapolate from the small model,
> and
> aside from that I think there are other engineering
> principles involved that would come into play , Sean would
> be the person to ask !  I know that it is done in wave
> tanks and wind tunnels, but in those you are looking at
> laminar flow and such things, not structural strength so
> much.  You might be able to get a rough idea of how it
> would start to collapse maybe.  The larger the model the
> better I would think.
> 
> Brian
> 
> --- personal_submersibles at psubs.org
> wrote:
> 
> From: hank pronk via
> Personal_Submersibles <personal_submersibles at psubs.org>
> To: personal_submersibles at psubs.org
> Subject: [PSUBS-MAILIST] model testing
> Date: Mon, 29 Dec 2014 10:52:46 -0800
> 
> Hi all
> If you
> make a scale model of a submarine in complete detail. 
> Scale the size and metal thickness, is it a reasonable
> representation of depth capabilities when pressure
> tested?
> Hank
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