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Re: [PSUBS-MAILIST] diver lockout details

Hi Jacob tell the group more about the project. 

There are a lot of serious people here which can help you. 

For the reason that I have still a family life and our house 
need a internal refit - Sabine invite me to reduce the work 
on the submarine - or better on the computer in the evening. 

The work on the submarine will be not reduce - needs some more 
years - so I decided to reduce the work on the internet to 
an half hour a day.. 

.. but for a serious project .. 

best regards Carsten


Jacob Lauser schrieb:
> 
> Carsten,
> 
> I just wanted to tell you that I have not forgotten about a submersible.
> Right now I am writing the grants for the project here at the University and
> am trying to get a team together. How is your ship going? Thanks again...
> 
> - Jacob Lauser
> 
> ----- Original Message -----
> From: "Carsten Standfuß" <MerlinSub@t-online.de>
> To: <personal_submersibles@psubs.org>
> Sent: Saturday, February 16, 2002 3:06 PM
> Subject: Re: [PSUBS-MAILIST] diver lockout details
> 
> > Hi Sean,
> >
> > http://www.prismnet.com/~moki/20020111.130903/X13.jpg
> > shows the actual design.
> >
> > The diver chamber is in the bow area and dry. The will be flooded with
> > compressed helium
> > and oxygen while the boat is a anchor about 3 feet away from the bottom.
> > If the inside gauge and the outside gauge shows the same pressure we
> > open
> > a small ballvale on the bottom-hatch so that the small cylinder below
> > the hatch will be also
> > blown dry. Than the bottom entry hatch (a bajonet lock) will be turn 20
> > degree
> > and open (spring loaded). If a diver jump out he stand with his feet on
> > the seabottom and
> > the other divers help him with his gear. Than he dive out. The
> > waterlevel on the lower
> > end on the cylinder increase with the volume of the diver which leave
> > the boat. If three
> > divers leave the chamber the cylinder exit channel is filled with water
> > up
> > to the highest point - short under the lock. So the boat is still under
> > his bouancy.
> >
> > I keep the anchormast out of the concept and will anchor on a heavy
> > weight of 200 Kg and
> > a short but very oversizes chain on a winch. If the boat goes a little
> > to light - some chain parts
> > lift form the bottom and the boat gets backs to zero bouancy. If the
> > boat goes to heavy some chain parts struck the bottom and the boat also
> > gets on zero level.
> >
> > The gas pressure and mix is controlled by the diver and for security
> > from inside the boat.
> > The CO2 will be scrubbert inside the chamber.
> >
> > If the diver close the hatch the gas pressure inside the chamber will be
> > lowered by a vale
> > to a small medium pressure boiler tank - and from this tank an automatic
> > pressure switch start
> > the compressor to press the expensive gas back into the storage bottles.
> >
> > The diver chamber has two beds in the bow end and can be also use a crew
> > cabin
> > for two person during normal cruseing mode. Also some storage gasbottles
> > are
> > located here to reduce the space as much as possible to reduce the gas
> > volume
> > nessesary to flooded the chamber.
> >
> > In emergency case the gaspressure inside the chamber can also release
> > into the rest
> > of the submarine - to get help to the divers. But this higher gas
> > pressure has to
> > put back to the storage bottles or the outside before the boat can
> > surface - The main
> > tower hatch is no designed for overpressure.
> >
> > For chamber using under 45 meter deep we will use normal air from the
> > ballast blow storage
> > bottles instead of helium/oxygen.
> >
> > The divers needs heated suits.
> >
> > Wetness is a problem is this area - I have not a final choise how to
> > handle this problem.
> >
> > The hatch on the top of the chamber is an emergency lock out - for the
> > reason that the
> > main sub is flooded and rested on the bottom with blocked bottom exit.
> > The chamber is than
> > the rescue chamber - and for the reason that the way via chamber
> > transfer hatch inside
> > the (flooded) submarine to the sail hatch is maybe to small for divers
> > with deepsea
> > rebreather on there neck - has the same design as the bottom bajonet
> > lock
> > and for cost reasons - will be added maybe later.
> >
> > The bottom bajonet hatch is made from stainless steel with a clear
> > diameter of about
> > 770 mm (30 inch) and a very expensive supply part. Will cost about the
> > same as the material
> > to build one complete Kittredge sub...
> >
> > Carsten
> >
> >
> > "Sean T. Stevenson" schrieb:
> > >
> > > Perhaps this question is best directed at Carsten, as he has (I think)
> already
> > > designed one of these, but I am curious as to how the diver lockout
> chamber
> > > is plumbed.  Does any flooding occur, or is it dry?  What compression
> rate
> > > is used, and how is it regulated?  How is diver decompression
> accomplished?
> > >  Controlled by the diver or must have intervention from a sub occupant?
> Manual
> > > control?  Multiple gas capability?  What about the space utilization?
> ie.
> > > during transit when not using the lockout chamber, can the space serve
> any
> > > other purpose?  What about diver access?  What design considerations
> went into
> > > the entryway?
> > >
> > > I have some ideas on how I would address these issues, but I would like
> to
> > > hear from those who have seen it, done it and/or thought about it.
> > >
> > > -Sean
> > > =================================================================
> > > Internet service provided by telus.net  http://www.telus.net/
> >
> >