[PSUBS-MAILIST] Working Schematic

Now that was truly nice of you to do, thank you Paul!

These boats do not scale down well. This is an idea drawing (one of several) just to do some math with. This one is near scale in this view. Something like what you drew is probably more practical scale wise. I would like some manner of getting in and out on the bottom.

Yes the glassed marine ply would give me quite a righting moment. I think I could get away with the bottles up this high then.

As for the rest, well...one thing at a time.

Joe

If this file didn't post, I will try another format. (second try jpg format)

From:  Paul Kreemer <paulkreemer@gmail.com>
Reply-To:  personal_submersibles@psubs.org
To:  personal_submersibles@psubs.org
Subject:  Re: [PSUBS-MAILIST] Free Flooding Spaces
Date:  Wed, 16 Nov 2005 11:09:20 -0800

Joe, I think we need some drawings! I've been following this
message thread but am not sure the kind of boat you're after.
Here's a rough layout sketch of a sub that I spent a few minutes
on. It looks maybe a little like a fleet boat, but I didn't try
to do much with the free flooding spaces (in white). I also
didn't try to apply any scale to it - so it may be way off.

But there's a lot of floodable space here, like you described
earlier. This first sketch of mine has a lot of problems: usable
viewports, access to and use of free-flooding space, overall size and
power requirements, lots of stuff.

Regarding your surface buoyancy question, my impression was always that
you had loads of buoyancy and maybe had issues more with just getting
it to sink and having adequate propulsion and control with such a large
amount of free-flooding volume. But hopefully some more
experienced designers can comment.

Paul

On 11/16/05, Joseph Perkel <joeperkel@hotmail.com> wrote:

Paul & Dan (ref: your reponses below)

I need to cut total interior floodable space by at least half. What everyone's been telling me has sunk in, the numbers aren't lying. Myles was correct, it's either a sub or a glass bottom boat.

If one where to consider the free flooding fairing idea more
closely, how do you provide sufficient surface buoyancy for the
structure without running into the same problems all over again?

These WWII boats do not "scale' down well and a short and stubby
"caricature" shape would actually be easier to control. Damn problems
keep rearing their ugly little heads!

Joe

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