Re: [PSUBS-MAILIST] Jane article on current submarine development.

[James Huffman <grandadmiraldonitz@yahoo.com>]

All this reminds me of the tv show Seaquest DSV.  Very good series.

 

James

Ian Roxborough <irox@ix.netcom.com> wrote:

Yeah. I think they are talking about getting eliminating the main
drive shaft thru hull, by replacing it with an electric motor in
a pod, rather than removing the whole concept of the propeller shafts.

The external pods would still have propeller shafts.

I think they are heading in the right direction (although I might
be bias, given the evolution of K350 designs I've played with). ;)

I would like to hear more about them eliminating the hydraullic
systems.

Cheers,
Ian.

On Sun, 25 Mar 2007 01:23:53 -0400
"SHinzey" wrote:

> Interesting read, but I tend to raise an eyebrow when anyone says
> "shaftless propulsion." In truth (as far as I know), it doesnt exist except
> in a hypothetical "pulsejet" type water jet and in systems that mimic nature
> (like the "shark-tail" drive) utilizing some kind of artificial muscle.
> I've seen vids. of the shark-tail work in a wave tank; extremely interesting
> (runs by electrically stimulated artificial muscle fibre). And the water
> jet exists also in a PWC scale I believe, but only as a power boost to the
> main drive.
> Anyways, "mermaid drives" (which is what this article is referring too)
> have been around for many years. Many modern ships use them actually and
> even some old ones have some form of it. It's nothing even remotely cutting
> edge, but it's nice to see them try to adopt it on subs. Even if they were
> to implement a type of "outrunner" system where the motor itself serves as
> the shaft, it's still a shaft though... u cant have an electromagnetic motor
> w/o one.
> ----- Original Message -----
> From: "Ian Roxborough"
> To:
> Sent: Sunday, March 25, 2007 12:51 AM
> Subject: [PSUBS-MAILIST] Jane article on current submarine development.
>
>
> >
> > Geared towards military subs, but I think it's relavent for
> > home builders as well:
> > http://www.janes.com/defence/naval_forces/news/jni/jni070323_1_n.shtml
> >
> > - Elimate direct drive.
> > + no prop shaft.
> > + no dedicated engines for propulsion.
> > + cleaner exterior and interior.
> >
> > - Elimate hydraulics (internal and external).
> > + I'm guessing the a noise and maintenance advantage.
> >
> >
> >
> >
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