[PSUBS-MAILIST] model testing
Marc de Piolenc via Personal_Submersibles
personal_submersibles at psubs.org
Thu Jan 1 04:33:00 EST 2015
I continue to be impressed to the point of awe with the caliber of
engineering that went into your boat.
Marc
On 12/31/2014 7:26 PM, "Carsten Standfuß" via Personal_Submersibles wrote:
> 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
> <mailto: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
> <mailto:personal_submersibles at psubs.org>> wrote:
> >
> > Subject: Re: [PSUBS-MAILIST] model testing
> > To: "Personal Submersibles General Discussion"
> <personal_submersibles at psubs.org
> <mailto: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
> <mailto:personal_submersibles at psubs.org>>
> >
> > To: Personal
> > Submersibles General Discussion
> > <personal_submersibles at psubs.org
> <mailto: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
> <mailto:personal_submersibles at psubs.org>>
> >
> > To: Personal
> > Submersibles General Discussion
> > <personal_submersibles at psubs.org
> <mailto: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
> <mailto:personal_submersibles at psubs.org>
> > wrote:
> >
> > From: hank pronk via
> > Personal_Submersibles <personal_submersibles at psubs.org
> <mailto:personal_submersibles at psubs.org>>
> > To: personal_submersibles at psubs.org
> <mailto: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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> >
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> >
> >
> >
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