Re: [PSUBS-MAILIST] Re: Viewport Toughness

["Pierre Poulin" <pipo305@hotmail.com>]

Well,

I only wanted to share the idea for 1atm viewport.

I will look very carefully for using that method on my dry-ambient. It could 
be usefull if the viewport come into hard contact against something. I think 
I remember that I read an article on the psub site about an accident of a 
dry-ambient that had it's window broken. Could it have been prevented with 
the "bullet proof" windows? I don't know... Just a tough.

Thanks for the comments!

Pierre Poulin




>From: Michael B Holt <tlohm@juno.com>
>Reply-To: personal_submersibles@psubs.org
>To: personal_submersibles@psubs.org
>Subject: [PSUBS-MAILIST] Re:  Viewport Toughness
>Date: Mon, 6 Oct 2003 16:33:11 -0400
>
>On Mon, 06 Oct 2003 13:32:39 -0600 Coalbunny writes:
> >I don't know about it making the glass or arcrylic "bullet proof".
>
>I've seen windows that were hit but not penetrated.   It's possible
>to make a window bulletproof, but I don't that relates in any way
>to submarine viewports.  Glass made bulletproof is glass made
>resistant to one impact on a tiny point.   A window that's taken a
>bullet is probably not going to  survive a second impact.
>
>Viewports have to be proof against  pressure over their entire face,
>and for a long time.
>
>On the other hand, what can we learn from the idea?
>
>
>
>--------------------------------------------------------------------------------------
>It is possible to make a Ship or Boate that may goe underwater
>unto the bottom, and so to come up againe at your pleasure ...
>                                                                       -
>William Bourne, 1576
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>
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