Re: [PSUBS-MAILIST] Pressurizing interior of pressure hull

["Brett Pinkepank" <brettpinkepank@yahoo.com>]

At first that seems like a good idea.  But to me at least, it would seem
that if you pressurized the interior of the hull, you would defeat the
purpose of going with a 1 atm like design in the first place.  If you
pressurized the hull to be of any value at all really, you would then have
to begin worrying about decompression times just like scuba and ambient
hulls.  And if you are ok with that you could probably save yourself alot of
money by eliminating alot of 1atm specifc systems, particularly a pressure
hull.  Even in an emergency if you pressurize the hull to save yourself you
are really just simply shifting the problem to give yourself more time.
There too you immediately have something extra to worry about.
----- Original Message -----
From: "Marten Liebster" <mliebster@tbteam.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, May 07, 2004 5:44 PM
Subject: [PSUBS-MAILIST] Pressurizing interior of pressure hull


>
> I was looking through the USS Pampanito site. In the diving and surfacing
> section under the technology section, there's mention of pressurizing the
> interior of the sub.
>
> Diving:
> "Air is bled into the ship when green lights show that all hull openings
are
> closed. Watertight integrity is assured when the internal air pressure
> remains constant."
>
> Surfacing:
> "During this interval, the low-pressure blowers, using air from within the
> ship, are completing the blowing of the main ballast tanks and reducing
the
> pressure within the hull. Usually the pressure is equalized before the
lower
> conning tower hatch is opened."
>
> Does anyone do, or plan to do, this with their 1 atm sub?
>
> Marten
>
> (I searched the archives and the only thread about pressurizing the
interior
> of a 1-atm was in the event of a leak)
>
>
>
>
>
>
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