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Re: [PSUBS-MAILIST] viewports available online
Hi Peter there is no given saftey factor in the GL classification rules just simple tables
for dummies:
All I can say that the tabels gives with a inside diameter of 550 and a tickness of 15 mm on
the weakest point a divedeep of 200 meter at a temerature of 10 degrees and about 150 meter at 24 degree. And it goes down to 5 bars at 66 degrees - so make no fire in the cabin and be carefull with spotlights ! For this reason the internal 50 Watt Halogen Searchlight of Peppers should not run long on the same spot on the dome at greater deeps.
There are some limits:
- The life time is limit to 10 years,
- you should not dive or surface faster then 10 bars a second ;-)
- Not more than 10.000 dives
- Not more as 40.000 hours under pressure
But you are also right - Class required a pressure test. So wait until the test chamber for Nemo is ready. We will test Peppers and Nemo in it. Both have the same dome. And we will test the third dome
to destroy deep.. of the chamber..
It seems that the company making the dome for us yust found a way
to blow even ticker material than 40 mm to domes.
But you can have the dome also with a class-certification - just aqdd to the price given from Emile with a saftey factor of 3 or 4.. ;-o
Domes can be maybe a little cheaper if we get more orders at the same time.
best regards Carsten
"Peter Madsen" <peter@submarines.dk> schrieb:
> Carsten,
>
> Not that its any standard, but I tend to use my acrylic windows to 10 % of
> destruction pressure. In the case of Krakas acryllic windows that gives us
> 28 meters since her type of windows tend to get a crack at 280 meters. For
> UC3 the windows are three times thicker, I havent made tests yet, but I
> expect destuction depth in 800 - 1200 meters range. She is build for 100
> meters diving.
>
> UC3 window mounts is made so windows can be tested to 30 % of destruction
> pressure ( 300 % use depth ) in situ prior to diving.
>
> If I put one of your fine domes in the hatch above the controlroom - I would
> be very happy to know its destruction pressure - but it would look
> wonderfull - and 1500 euros is very exceptionally cheap. I just don´t like
> to deviate to much from the above "Madsen test standard"
>
> Regards,
>
> Peter
>
>
> ----- Original Message -----
> From: <MerlinSub@t-online.de>
> To: <personal_submersibles@psubs.org>
> Sent: Tuesday, June 12, 2007 12:02 AM
> Subject: Re: [PSUBS-MAILIST] viewports available online
>
>
> > Hi Peter it can be to 200 meter - if the water is not hot. ;-)
> > At 10 degrees it should work. About 150 meter at 24 degrees.
> > According to ABS, GL etc.etc..
> >
> > regards Carsten
> >
> > "Peter Madsen" <peter@submarines.dk> schrieb:
> >> Hi Emile,
> >>
> >> That dome - can it be used to 200 meters with standard safety factors ?
> >> Maybe we can make a testchamber ?
> >>
> >> Regards,
> >>
> >> Peter
> >>
> >> ----- Original Message -----
> >> From: Emile van Essen
> >> To: personal_submersibles@psubs.org
> >> Sent: Monday, June 11, 2007 5:38 PM
> >> Subject: RE: [PSUBS-MAILIST] viewports available online
> >>
> >>
> >> Oystein,
> >>
> >>
> >>
> >> I can supply such a window. It has an outside diameter of 580 mm and a
> >> height of 250 mm (150 deg. )
> >>
> >> Its is blown from a 40 mm thick acrylic plate. Much cheaper than a cast
> >> one; it is about 1500 euro's
> >>
> >> Carsten and I developed the tool for the sgt. Peppers dome.
> >>
> >> There are pictures on the site
> >>
> >>
> >>
> >> Regards, Emile
> >>
> >> www.airesearch.nl
> >>
> >>
> >>
> >> Peppers now also on youtube! Search peppers + psub
> >>
> >>
> >>
> >>
> >> ------------------------------------------------------------------------------
> >>
> >> Van: owner-personal_submersibles@psubs.org
> >> [mailto:owner-personal_submersibles@psubs.org] Namens Øystein Skarholm
> >> Verzonden: maandag 11 juni 2007 15:00
> >> Aan: personal_submersibles@psubs.org
> >> Onderwerp: Re: [PSUBS-MAILIST] viewports available online
> >>
> >>
> >>
> >> Somebody here on the forum mentioned that they could sell hemispherical
> >> viewports. I need one ~ 600 mm diameter 200m workdepth. Anyone in here
> >> who can supply me one? First i need the drawings for the flange / seat to
> >> be welded to the sub.
> >>
> >> On 4/25/07, Jon Wallace <jon@psubs.org> wrote:
> >>
> >>
> >> Hello psubbers,
> >>
> >> We have acrylic viewports available from the online store at
> >> http://www.psubs.org/store/. With proper support they can be used up
> >> to 350
> >> feet in depth. Please note these are NOT certified viewports.
> >>
> >> Specifications:
> >> Diameter: 8 inches (203mm)
> >> Thickness: 1.25 inches (31.75 mm)
> >> Max Depth: 350 feet
> >> Seating: Minimum of one inch (25.4 mm) support on the outside
> >> diameter
> >>
> >> Jon
> >>
> >>
> >>
> >>
> >>
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> >> www.ubat.no
> >>
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The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 53
Weare, NH 03281
603-529-1100
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