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[PSUBS-MAILIST] double endcaps sub, stability
Warren,
I have tried to place the batteries inside the pressurehull. I sat in my
mock-up (a frame made out of plastic tubes) and tried to find a place for
the batteries (carton boxes). I did not succeed. So now i want to place them
behind the pressurehull. This has the advantage that the profile of the sub
stays slim. I want to use two 85 AH batteries for the Endura 30 Minn
Kota's. There are 4 off them, 2 horizontal and 2 vertical under a 45 dgr.
angle.
Placing the batteries behind the pressure hull made me worry about the
stabiliy. But when you look at an avarage car battery, and you look at the
volume (= buoyancy) compared to the weight they are not that heavy at all.
Anyway i made some "calculations" which i will try to send as an attachment.
About some things i had to make a guess but most figures are extracted from
the 3D autocad drawing.
I also send a drawing to moki files. You can see the battery box and the new
thruster configuration. Between the batteries and the MBT there is room for
the air bottle(s).
Greatings,
Thijs Struijs from
The Netherlands
----- Original Message -----
From: "Warren Greenway" <opensourcesub@yahoo.com>
To: <personal_submersibles@psubs.org>
Sent: Wednesday, October 22, 2003 5:42 PM
Subject: Re: [PSUBS-MAILIST] DElta sub (was: kitredge sub)
> Hey, Thjis. Have you figured out anything on the
> battery arrangement for the OSS hull? I was starting
> to wonder if it wouldn't be better to follow our
> original line of though and place the batteries in
> external "pods". The reason I was thinking this, was
> I was considering a hatch at the bottom of the hull,
> for submerged entry/exit and ambient running, if
> ambient pressure was desired.
>
> Warren.
>
> --- Thijs Struijs <thijs-struijs@planet.nl> wrote:
> > I suppose it about the Nekton Delta.
> >
> > Thijs Struijs
> >
> > ----- Original Message -----
> > From: "Michael B Holt" <tlohm@juno.com>
> > To: <personal_submersibles@psubs.org>
> > Sent: Thursday, October 09, 2003 9:45 PM
> > Subject: [PSUBS-MAILIST] DElta sub (was: kitredge
> > sub)
> >
> >
> > > On Thu, 9 Oct 2003 07:08:09 -0600 "Adam Lawrence"
> > <adteleka@in-tch.com>
> > > writes:
> > > >The Delta is like the Kittredge subs in that it
> > has added weight to make
> > > it
> > > >slightly negatively buoyant when all the air is
> > out of the two ballast
> > > >tanks, fore and aft.
> > >
> > > What's the Delta? I don't recall it.
> > >
> > >
> > >
> > >
> > > Mike Holt
> > >
> > >
> > >
> >
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Stablility1.xls