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Date: Thu, 26 Jul 2001 15:50:39 +0200
From: mat.voss@t-*.de* (Matthias Voss)
Organization: Harry Haller Memorial Fund
To: Paul Komrowski <2deep@tw*.rr*.co*>
CC: wgrogan@dc*.ne*, techdiver@aquanaut.com
Subject: Re: WTF is Ed?
Well,yes.
But not if the diver was inside the cavitatinal bubble created by the
nose of the scooter.
Unfortenately, these designs up to now are pretty much straight
shooters, and the energy to maintain initial speed needed is tremendous.
may steering might be acieved some day by deflecting the bubbles shaped.

In diving , the inside bubble's pressure relations might well accelerate
decompression, but what the heck, may be some are using this technique
already .
Look for scooters with funy flat noses, where they should be nicely
convex ;-)

Matthias

Paul Komrowski schrieb:
> 
> Problem is the main drag is on the diver, not the scooter, this would give
> very small improvements not worth the trouble.
> 
> Paul Komrowski
> 
>  -----Original Message-----
> From:   wgrogan@dc*.ne* [mailto:wgrogan@dc*.ne*]
> Sent:   Wednesday, July 25, 2001 1:47 PM
> To:     Matthias Voss; wendell grogan; Chris Elmore; ScottBonis@ao*.co*;
> techdiver@aquanaut.com
> Subject:        Re: WTF is Ed?
> 
> >Wendell,
> >why so ?
> >Actually , the mentioned method of propulsion is not far away from what
> >new torpedo counteracting methods are at, as somebody who is working in
> >this area mentioned to me.
> >regards
> >Matthias
> 
> One of the theories is that the Kursk was trying out the new liquid fueled
> high
> speed torpedos when it blew up.  Of interest is that the Russians are
> cutting
> the front end off the sub and leaving it behind.  If they really wanted to
> find
> out what happened (ie. didn't know already), they would be itching to get at
> the bow section.
> Since the new propulsion technique involves generating a bubble of gas
> around
> the torpedo/vehicle/whatever and then taking advantage of the reduced drag
> to
> speed up to near (or above) the speed of sound underwater, it seems to me
> that
> if the same thing could be done for a scooter, the endurance improvement
> would
> be dramatic since you really don't want to go much faster than scooters go
> now.
>  Obviously you need a gas source, the Russians just proved why using the
> exhaust
> from a Walter engine is dangerous:)  Perhaps running the whole system on
> compressed
> air- gas spins a turbine which is then exhausted out the front of the
> scooter
> to create the bubble. The turbine of course spins the prop.  The engineering
> is way out of my league, so that's why I brought it up here.  There are a
> number
> of bright guys that can poke holes in the concept.
> 
> Wendell
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