Re: [PSUBS-MAILIST] Waterproof controls

["Mad Pirate Shin" <psub_only_temporary@hotmail.com>]

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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--
"Indeed, desire is the seed of thought, the prime force that activates
the mechanism of the mind." -- Kama Sutra


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