Re: [PSUBS-MAILIST] Waterproof controls

[Coalbunny <coalbunny@vcn.com>]

Shin, again, the least of your concerns.  IF the pressure is great
enough to destroy the fish finder, as you stated, the fumes (if any)
would still be the least of your concerns.  I have heard of those units
getting dumped in several hundred feet of water and salvaged.  A little
cleaning and drying out and everything worked.
Carl


Mad Pirate Shin wrote:
> 
> From: Coalbunny <coalbunny@vcn.com>
> I think that if your hull's integrity is compromised to the point of
> flooding, the fish finder is or should be the least of your concerns.
> Carl
> 
>   Agreed, but it would sure suck if the fishfinder's screen imploded and
> released noxious gasses.  I am reminded of the crew that had to place the
> parasol on Skylab after it's launch.  I bet they were pretty relieved to
> know that someone had thought to test the gases given off by various
> materials in high heat and fire.
>   Even if the internal components are inconsequential to the flooding and
> escape from the sub, I would still like to be able to anticipate their
> reaction.  Knowing that the thing which just exploded was just the
> fishfinder and not something more ominous is one less thing I have to think
> about in a crisis.
> 
>         regards,
>          Shin
> 
> "And further more, be advised that although this is actually a live
> broadcast and is being sent out at this very moment, it is quite possible
> that it may arrive tomorrow, right now, or perhaps even yesterday." -Serial
> Experiments Lain ep#8
> 
> Mad Pirate Shin wrote:
>  >
>  > I had also wondered how a fishfinder display might withstand the flooding
> of
>  > the pressure hull.  I aim for the simplest design possible, so I worry
> more
>  > about the mechanical strength of the components and less about the
>  > reliability of the electrical components.  Along that line of thought I
> read
>  > in the Aquarius habitat's online "user manual" that the LCD screens on
>  > laptops were permitted but that monitors using Cathode Ray Tubes were not
>  > allowed in the habitat.  I had never thought of CRTs as being dangerous,
> but
>  > I am reminded of the time I threw a brick though one; the weight and
> range
>  > of the chunks of glass that came flying back at me sure gave me a
> surprise.
>  > Whether the risk of imploding the monitor is the reason for the ban on
> CRTs
>  > or there is some other reason, I wonder.
>  >   I would enjoy reading anyone's thoughts on the subject of
>  > pressure/water-proofing interior components both for pressure hull
> flooding
>  > and for use in lock-out chambers(or ambient wet submersibles).  The
> Aquarius
>  > instructional 'primer' can be found here if yer interested.
>  >
>  > http://www.uncwil.edu/nurc/aquarius/aum/ums0.htm
>  >
>  >     regards,
>  >      Shin
>  >
>  > "And further more, be advised that although this is actually a live
>  > broadcast and is being sent out at this very moment, it is quite possible
>  > that it may arrive tomorrow, right now, or perhaps even yesterday."
> -Serial
>  > Experiments Lain ep#8
>  >
>  >  > >----- Original Message -----
>  >  > >From: <mckellar@earthlink.net>
>  >  > >Sent: Thursday, April 17, 2003 8:43 PM
>  >  > >Subject: [PSUBS-MAILIST] Waterproof controls
>  >  > >
>  >  > >
>  >  > > > Hi All,
>  >  > > >
>  >  > > > I had wanted to provide emergency escape from a sub i design to
>  > include
>  >  > > > flooding the cabin.
>  >  > > >
>  >  > > > this leads to concern about the electronics etc inside.  My son
> tells
>  > me
>  >  > >he
>  >  > > > has a friend with a thin film keyboard that he can roll up, rinse
>  > under
>  >  > >a
>  >  > > > tap etc.  this would probably be the trick for the keyboard, but
> what
>  > do
>  >  > >i
>  >  > > > do about joystick and thruster controls?  i guess the screen could
> be
>  >  > > > behind glass, in a separate 1atm compartment.....
>  >  > > >
>  >  > > > any suggestions?
>  >  > > >
>  >  > > > peter
>  >
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> --
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> the mechanism of the mind." -- Kama Sutra
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-- 
"Indeed, desire is the seed of thought, the prime force that activates
the mechanism of the mind." -- Kama Sutra