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Re: [PSUBS-MAILIST] OSS Pressure hull basic layout.
On Fri, 24 Jan 2003 11:33:37 +0800
"Warrend Greenway" <dub@linuxmail.org> wrote:
> Here's the reason I would want two hatches: This is a two man sub. Do I really want
> two hatches? You've got to be kidding me! Heck no! But I also have never been a big fan
> of slithering like a snake. Not my style. If the hull diameter was greater then I would
> advocate a single hatch.
Make the passenger sit up front then. ;-)
I think with some well placed hand rails you could get in and out of the
forward seating position without too much "slithering".
Would somebody who has sub like to comment on this?
> Gosh this weight constraint makes things exciting! It wouldn't be that difficult at
> all if this was a one man, but two...Whoa. What about a large conning tower with both
> passengers back-to-back? It's not like the view behind the sub would be any less exciting
> for the passenger...Well, let's see if we can bang out something...
I've thought of something like that a few times.
(check http://www.prismnet.com/~moki/subfiles.html for a diagram).
But I'm not sure how comfortable it would be without making the hull pretty big
(or using an out of around shape for the coning tower).
Ian.
> > On Fri, 24 Jan 2003 09:02:21 +0800
> > "Warrend Greenway" <dub@linuxmail.org> wrote:
> >
> > > OK. You have some really interesting ideas here. I personally
> > > would like to see two hatches, possibly of raised domes, or
> > > the cylinders.
> >
> > I'm interested in why? I can't seem see any advantage to two
> > hatches on a sub this small.
> >
> > I only put one hatch in because putting two would make the moment of
> > the boat unstable on the surface. I.e. two open hatches on the surface
> > puts a lot of weight high up, now imagine if two people stood up at the
> > same time. There is also the cost factor and effort of making two hatches.
> >
> > > I thought your seating idea was great! I also
> > > like the "foot dome", that is an interesting concept, because
> > > it minimizes the volume. Also, putting the instruments and
> > > controls on rails so that they roll out of the way sounds like
> > > a good idea, then they wouldn't be in the way when you are
> > > climbing in. Did you get a chance to look at the pictures of my
> > > canted idea?
> >
> > It's hard to tell why you've done that for the picture. Infact
> > it's hard to get any useful information out of a 3d pictures.
> >
> > Other than that, I think it would be endanger of being
> > swamped if the dome was open and small wave hit the boat.
> >
> > Ian.
> >
> > > >
> > > > hi,
> > > >
> > > > I did a little fiddling around with the pressure hull layout.
> > > > Using a foot well, it seem that we could design a hull with
> > > > around a 2 cubic meter displacement (~2000kg or ~4400lbs).
> > > >
> > > > I'm interested in what people, in particular about the
> > > > dimentions with regard to confort.
> > > >
> > > > Ian.
> > > >
> > > >
> > > >
> > > > http://www.prismnet.com/~moki/subfiles.html
> > > > http://www.prismnet.com/~moki/20030123.175639/hull-v1.jpg
> > > >
> > > > Approximate displacement: 2 cubic meters (~2000kg or 4400lbs)
> > > >
> > > > Hatch top is 2.5 feet from the water line, per ABS spec.
> > > >
> > > > One dome viewport, one cylinder style veiwport.
> > > >
> > > > Only rear seating position has a hatch, the dome doesn't not open.
> > > >
> > > > Seats would probably be made of cloth and hung "hammock style"
> > > > so they be easily moved out of the way making it easy to access
> > > > the front seating position.
> > > >
> > > > Front seating position is for the viewer/guest, the rear position
> > > > is for the pilot, the idea is the pilot sitting slightly higher
> > > > to see more.
> > > >
> > > > Controls would been to fold away so they do not inhibit passage
> > > > to the front position.
> > > >
> > >
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