[PSUBS-MAILIST] model testing

Wed Dec 31 11:25:31 EST 2014

Carsten, what is the title of that book?

Sean

On December 31, 2014 3:26:00 AM PST, ""Carsten Standfuß" via Personal_Submersibles" <personal_submersibles at psubs.org> 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>
>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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