Re: [PSUBS-MAILIST] More Batteries....power configuration?

[mckellar@earthlink.net]

the gas laws r easy (in metric anyway - well atmospheres, not
gigapascals).  This is according to Boyle's Law and describes a
linear relationship between depth and pressure.

sea level is 1 atmosphere, every 10m depth (freshwater, not salt) adds
one more atmosphere eg.

30m = 4atm (divide by 10, add 1)

I'm still wrestling with relating this to materials myself :(

btw, any good recipes for submarine margaritas? :)

At 23:58 4/30/03 -0400, you wrote:
> Hey
> everyone, 
>
>       So I get it: Higher voltage is better. I'm
> tempted to use two or three different banks of batteries, one or two
> running at high voltage for the main motor (s) and another at 12 volts to
> power accessories (Microwave for pizza and blender for margaritas).
> Assuming I've got a whole lot of 12-volt batteries, how do I connect them
> to make higher voltage with which I'd feed the motors? How far down does
> the endurance of a battery bank go when running at higher voltages than
> 12, or doesn't it make a difference? I'm still a little fuzzy when it
> comes to electrons. 
>
>       Also, I'd been wondering if there was a
> standard set of formulas for figuring the pressures exerted on a sub at a
> given depth, and consequently what thickness of a given material must be
> used to make the hull. I'm trying to flesh out my sub on paper before I
> start building. 
>
>       Thanks and best regards, 
>
>       Matt