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Re: [PSUBS-MAILIST] Re: Welcome to the Personal_Submersibles_Disc ussion
Dang straight, Jay. I think that anyone who lacks a basic understanding of
specific gravity and bouyancy should do a little reading before building
a sub. Jeffrey, your sub must weigh as much as the volume of water it
displaces, to achieve neutral bouyancy. Therefore, you can't build a lighter
sub without also building a smaller sub. This holds true even for the so-
called "flyers", just not to the same extent. Grab a few books on submarine
design and principle and read the material on the www.psubs.org . Good Luck!
Warren.
>
> At the bottom of the ocean, were I in a balloon, would not also the balloon
> be flat, unless I increase the presure inside the balloon to equal the
> outside?
>
> Jay.
>
> Also doesn't the boat have to weigh the same as the water displaced in
> order to sink? So unless it is filled with internal ballast tanks it would
> have to weigh the roughly the same as a metal hulled boat?
>
> Just a clarification please?
>
> Jay.
>
>
> Thanks,
>
>
>
>
>
> BauWauHausDesign@aol.com
> Sent by: To: personal_submersibles@psubs.org
> owner-personal_submersible cc:
> s@psubs.org Subject: Re: [PSUBS-MAILIST] Re: Welcome to the Personal_Submersibles_Discussion
>
>
> 27/01/2003 04:29 PM
> Please respond to
> personal_submersibles
>
>
>
>
>
>
> In a message dated 1/27/03 3:15:47 PM Pacific Standard Time,
> emm03@mirapoint.uow.edu.au writes:
>
>
> Sounds scary...I suggest you test this hull to a few times
> operating depth before you get inside it...........just to
> make sure you have it right..
> EM.
>
>
> Hey EM,
>
> Scary because you are operating from a particular design perspective, but
> not the only one.To demonstrate this, here's a question:
>
> When is rubber stronger than metal? Answer:
>
> At the bottom of the ocean. Take a rubber balloon and a soda can to the
> bottom of the sea and the balloon (though smaller) is intact, yet the can
> is flattened. Why? Obviously because the balloon was elastic and was able
> to shrink under the pressure. What I have designed provides mechanical
> elasticity, not that the hull actually changes shape, just how the pressure
> differential is interpreted. In theory, a paper bag could withstand the
> pressures of the deep seas utilizing this process.
>
> anyways, thanks for inquiring,
>
> jeffrey
>
>
>
>
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