Re: [PSUBS-MAILIST] OSS spec sheet

["Warrend Greenway" <dub@linuxmail.org>]

Explain in detail how you would suggest that:
1. The mating flanges be machined.
2. A reliable seal be maintained between the flanges.

I am not trying in any way to quell the idea. I just want some practical
explainations of the mating system. I have never seen a flange on this
scale work, but that is not to say it isn't practical. Also, I really 
want to know how this part would be built, or are there flanges for
high pressure pipe that could be used? I do like the idea of the larger
beam, and am personally willing to pay the weight penalty for it. I don't
want my fellow passenger to spend all their time peering over my shoulder
this would make it wide enough to stagger some low seats.

Warren.

> On Wed, 15 Jan 2003 02:27:34 +0800
> "Warrend Greenway" <dub@linuxmail.org> wrote:
> 
> > Traditional:
> > 1. Length	4 meters
> > 2. Beam		1.8 meters
> > 3. Speed	5 knots
> > 4. Depth	100 meters
> > 5. Duration	2-4 hours
> > 6. Cost		$12,000 USD
> > 7. Capacity	2 passengers
> > 8. Other	Optional electronics package
> > 		Optional life support system.
> > 		Optional acrylic dome bow
> > 		Optional fiberglass fairings
> > 		Required analog/mechanical gauges
> > 		Required auxillary electrical
> > 		Required steel pressure hull
> > 		Required drop ballast
> > 		Required "trimable" ballast
> >                 Required PWM speed control
> > 
> > Modular:
> > 1. Length	4-6-8 meters
> > 2. Beam		2 meters
> 
> Is this the pressure hull size?  2 meters is pretty big.
> The sub will have to be very heavy to dive.
> 
> > Note: Modular would not be bolt together. Pressure hull would
> > still be a welded piece, the tanks would be arranged in groups
> > though, so only one set of designs is needed. Step and repeat.
> 
> I really like the idea of the pressure hull being two sections
> that can be bolted together.  This will make maintaining and
> upgrading the submarine a lot easier.  Plus, if you where to
> add a diesel, you could add a longer section.  If we do go
> with a bolted section pressure hull, then we would put the 
> insides on rail (previous mension on psubs) so the contents
> could slide out for servicing.
> 
> If we have bolt on modules, we will have to make sure that
> if one or more of these modules floods the boat doesn't become
> endangered.
> 
> Ian.

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