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Re: [PSUBS-MAILIST] Crazy idea.
I dont think that the force can be redirected in that
manner.It seems to me that the pressure would travel
into the tubes but would not have any measurable
effect in an outward direction. The pressure would
just be trying its best to burst every one of those
tubes so they would have to be as thick as your hull.
I like the fact that you are thinking about new ideas
though. It seems that no one reads or thinks anymore.
All that is in their head is who won last nights
basketball game and how they cant wait to get off work
so they can get drunk. Every time I mention submarines
or anything remotely intresting they either give me
strange looks or change the subject back to football.
Oh yeah and Newtons law is not a law at all its just a
working theory. :)
--- Akins <lakins1@tampabay.rr.com> wrote:
> That's why I called it a craaazy idea.
>
> I know each curved tube would be a seperate pressure
> vessel of sorts or possibly the inside surface of
> the hull where the tube welds against the inside of
> the hull would be the pressure vessel. What I am
> wondering is....wouldn't there be pressure
>
> against the inside surface of the hull where the
> tube terminates against it? I picture the pressure
> in the curved tubes pushing inward in all directions
> within the tube, so wouldn't that also push SOME
> against the inner surface of the hull outwardly?
>
> I picture hundreds of thick curved tubes shaped like
> sink traps open to the outside on one end and
> penetrating the hull wherein the other end is then
> welded to the inner surface of the main pressure
> hull. Since the pressure in the tubes would be
>
> the same pressure exerted against the entire main
> hull, I again come back to the question....would
> there be any pressure AT ALL exerted against the
> inside surface of the hull where the tube
> terminates? If this worked I know it would be
> problematic
>
> but I am just interested in the theory. I know for
> each action there is an equal and opposite reaction.
> In this case pressure is the action and resistance
> stress or implosion is the reaction. What I am
> seeking is theoretically redirecting that action so
> it
>
> becomes its own REaction and cancels itself out. Now
> this is REALLY going to sound nuts, but what would
> Isaac Newton say if he had knowledge of antimatter's
> existance and you posed the question of what would
> happen if you fired two projectiles
>
> of equal weight head on into each other and one was
> made of matter and the other of antimatter?
> According to Newton something has to give right? But
> not in that case. They would simply cancel each
> other out. Now I know antimatter has nothing to do
> with
>
> what we are talking about here, but It just may be
> possible that Newton's law could be violiated and is
> not a total absolute. But I'm sure I'm missing
> something here and not about to violate Newton's
> law. Again, would there be any pressure exerted
> against the inside of
>
> the hull pushing outwardly in my above curved tube
> scenereo?
>
> Kindest Regards,
>
> Crazy Bill.
>
>
> ----- Original Message -----
> From: gordon alexander
> To: personal_submersibles@psubs.org
> Sent: Saturday, May 14, 2005 11:08 AM
> Subject: Re: [PSUBS-MAILIST] Crazy idea.
>
>
> This might confuse some folks. This is a
> completely different thing than Bill was thinking
> of. Bill was using only ambient pressures and
> counting the forces in helpful directions and at
> least partially ignoring forces against the hull. He
> wasn't summing the forces correctly. He was trying
> to violate Newtons third law.
>
> Gordon Alexander
>
> Ian Roxborough wrote:
> Hi Bill,
>
> some research has been done on this idea. But they
> are two main
> differences between what you describe and the
> research I've read.
> First is that rather than use a horse shoe shaped
> stiffener, the
> stiffener has been made out of either a complete
> tube (i.e. toroid),
> or a longer tube coiled around the inside of the
> pressure vessel.
> The second change is that rather than exposing the
> inside of the
> tube to external pressure, they are pressurized to
> several times
> higher than the external pressure.
>
> The book "Pressure Vessels - external pressure
> Technology" by Carl
> T. F. Ross, discusses tube stiffened pressure
> vessels on page 286.
> Later on (page 321) there is an experiment using a
> tube stiffened
> dome in a pressure test tank. The tubing was
> pressurized to 13bar
> and the fail pressure of the dome was 3bar.
>
> The advantage of the tube stiffened pressure-vessels
> is that if you
> increase the internal tube pressure, you increase
> the crush depth.
>
> Anyway, it works, it has been done in laboratory
> conditions, but
> I do not know of a non-test tube stiffened
> pressure-vessel.
>
> Cheers,
> Ian.
>
>
> On Sat, 14 May 2005 08:25:13 -0400
> "Akins" <lakins1@tampabay.rr.com> wrote:
>
> Hi forum.
>
> I just had a craaaazy idea. This just jumped into my
> head and I wonder if anyone has ever tried it or any
> research done on it.
>
> Suspose you had a pressure hull with horseshoe
> shaped tubes penetrating the hull all over its
> entire surface. Then suspose the water
>
> entered into the open ended OUTSIDE of those tubes
> and the tubes were welded where they penetrated the
> hull and also against the inside of the hull facing
> outward so the outside
>
> water pressure enters the open end and is now
> pushing OUTWARD against the inside of your hull.
> Would this work to counteract some of the inward
> pressure on
>
> the hull? I was thinking of a way to use water
> pressure to counteract itself by taking its inward
> pushing pressure and curving back outward against
> the inside of your pressure hull by use of horseshoe
> shaped tubes.
>
> Or am I missing something basic again about
> pressure?
>
> Kindest Regards,
>
> Bill Akins.
>
>
>
>
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