Re: [PSUBS-MAILIST] OSS Modeling Ideas

[Warren Greenway <opensourcesub@yahoo.com>]

The micro beads replace the fluid, so it is cleaner.
The micro beads will basically settle, and reduce
somewhat in volume, so they wouldn't be as ideal as
a fluid in that respect. 

Warren.

--- "Dan H." <JMachine@adelphia.net> wrote:
> The reason that batteries have to be enclosed in a
> pressure tight pod or be
> pressure compensated is of course because of the air
> space in the battery.
> The rest of it is either solid or liquid.  I suppose
> if you filled each cell
> totally with fluid it could withstand any depth,
> couldn't it?????
> 
> I don't understand what your want to do with micro
> beads.
> 
> Dan H.
> ----- Original Message -----
> From: "Warren Greenway" <opensourcesub@yahoo.com>
> To: <personal_submersibles@psubs.org>
> Sent: Sunday, April 27, 2003 12:22 PM
> Subject: RE: [PSUBS-MAILIST] OSS Modeling Ideas
> 
> 
> > I guess I prefer something that can't leak. What
> about
> > a glass micro beads? I have seen them used for
> things
> > like this, and they are pretty cheap. Forget the
> epoxy
> > I mentioned earlier, it would work but would be a
> one
> > time deal. What kind of equal pressure can a
> sealed
> > gel cell take?
> >
> > Warren.
> >
> > --- martlet1 <martlet1@sbcglobal.net> wrote:
> > > Another option is pressure compensation with
> inert
> > > gas (helium or argon).
> > > No ignition hazard with any hydrogen gas
> produced by
> > > the batteries,
> > > reversible, and relatively cheap.
> > >
> > > Texas Lake Diver
> > >
> > > -----Original Message-----
> > > From: owner-personal_submersibles@psubs.org
> > > [mailto:owner-personal_submersibles@psubs.org]On
> > > Behalf Of Warren
> > > Greenway
> > > Sent: Saturday, April 26, 2003 12:12 PM
> > > To: personal_submersibles@psubs.org
> > > Subject: Re: [PSUBS-MAILIST] OSS Modeling Ideas
> > >
> > >
> > > Try pressure compensation with epoxy. If the
> battery
> > > hull is the correct dimensions, it might just be
> > > possible. They sell thermal conductive,
> electrical
> > > insulative epoxies that you can fill with glass
> > > beads.
> > > This is somewhat expensive, and completely
> > > irreversible,
> > > but would work.
> > >
> > > Warren.
> > >
> > > --- Thijs Struijs <thijs-struijs@planet.nl>
> wrote:
> > > > Warren,
> > > >
> > > > A little late reaction, but i was on a
> vacation
> > > for
> > > > week. I will try to get
> > > > some ideas on paper. The problem is that i
> don't
> > > > know yet where to locate
> > > > the batteries. When placed internaly they
> won't
> > > > contribute to the stability.
> > > > When placed exterior they should  be
> > > > pressure-compensated or in a bulky
> > > > pressure resistant container. Pressure
> > > compensation
> > > > with oil isn't an option
> > > > after reading Busby. Pressure compensation
> with
> > > air
> > > > was my favorite until
> > > > Michael Wludarczyk (his e-mail from april 15)
> > > > pointed out that that might be
> > > > dangerous. I will check the archives for this
> > > > matter.
> > > >
> > > > Greatings,
> > > >
> > > > Thijs Struijs
> > > > ----- Original Message -----
> > > > From: "Warren Greenway"
> <opensourcesub@yahoo.com>
> > > > To: <personal_submersibles@psubs.org>
> > > > Sent: Monday, April 21, 2003 9:43 PM
> > > > Subject: Re: [PSUBS-MAILIST] OSS Modeling
> Ideas
> > > >
> > > >
> > > > > Hey, Thjis, have you given any thought to
> the
> > > > external
> > > > > tank layout? I was playing around with ari,
> > > > ballast,
> > > > > and batteries, trying to figure out where
> they
> > > > should
> > > > > go. Your hull concept is naturally very
> sleek,
> > > so
> > > > it
> > > > > would be nice if we could keep it that way.
> > > > >
> > > > > Warren.
> > > > >
> > > > > --- Thijs Struijs <thijs-struijs@planet.nl>
> > > wrote:
> > > > > > Jeremy,
> > > > > >
> > > > > > Very nice pictures. I am sure that this
> will
> > > > help in
> > > > > > the discussion. Even
> > > > > > people with no 3D-imagination can follow.
> > > > > > I made a mock-up of  the Double endcap sub
> out
> > > > of
> > > > > > plastic pipe. I made a
> > > > > > floor in it of about 600 mm long and 300
> mm
> > > > wide. I
> > > > > > was thinking of a seat
> > > > > > that can be changed in height from 150 to
> 300
> > > > mm.
> > > > > > The seat must be foldable
> > > > > > or removeble so you can sit on knees from
> time
> > > > to
> > > > > > time. It will never be
> > > > > > very comfortable but even famous subs like
> > > Star
> > > > III
> > > > > > (Busby p. 461) demand
> > > > > > some flexiblity of the crew.
> > > > > > As for the two-seater i was thinking of a
> > > > scooter
> > > > > > buggy seat. The hull could
> > > > > > be equiped with 2 acrylic hemispheres on
> both
> > > > sides
> > > > > > like big fish-eyes.
> > > > > > I am on a vacation the next week so i will
> be
> > > of
> > > > > > line for some time.
> > > > > >
> > > > > > Good luck,
> > > > > >
> > > > > > Thijs Struijs
> > > > > >
> > > > > >
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Jeremy Crawford"
> <ISMASC@hotmail.com>
> > > > > > To: <personal_submersibles@psubs.org>
> > > > > > Sent: Saturday, April 19, 2003 12:50 AM
> > > > > > Subject: [PSUBS-MAILIST] OSS Modeling
> Ideas
> > > > > >
> > > > > >
> > > > > > > I did some thinking about doing some
> > > modeling
> > > > for
> > > > > > OSS but that is a pretty
> > > > > > > vague situation.  So my first thought
> was to
> > > > look
> > > > > > at Seating arrangments.
> > > > > > I
> > > > > > > setup about six different two man
> > > > arrangements.  I
> > > > > > used a standard
> > > > > > cylinder
> > > > > > > hull for half and then used Thijs Idea
> of
> > > the
> > > > > > Double endcap for the other
> > > > > > > half.  So if people interested could
> look
> > > and
> 
=== message truncated ===


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