From: "Jay K. Jeffries" <bottomgun@mindspring.com>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: RE: [PSUBS-MAILIST] A Solution
Date: Mon, 6 Nov 2006 18:58:52 -0500
Joe,
As you only have buoyancy in the pontoons and not continuously under the
submersible, the pontoons will have to be increased in length to gain
sufficient buoyancy to float the combined sub and pontoon boat off of the
trailer. The increased length may be an issue in getting the combo off of
the trailer on steeper ramps.
Aren't I just a killjoy :-) !!!
R/Jay
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
It is the mark of an educated mind to be able to entertain a thought
without
accepting it.
- <http://www.quotationspage.com/quote/1152.html> Aristotle
_____
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Joseph Perkel
Sent: Monday, November 06, 2006 1:38 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] A Solution
Incidentally.....this is not fully submersible as the LRT barge, it is
semi-submersible. The level of upper flotation is set to float the sub off
the deck by (X)"....(better be a damn nice flat day too)!
If this proves mathematically stable enough to be viable, you would launch
this from a standard trailer, in "skinny water", then tow to the dive site,
just like the LRT barge, then vent down the pontoons. Your 1500w generator,
blower and other goodies stay dry above on top of either aluminum, or
composite foam filled floats.
Joe
_____
From: "Joseph Perkel" <joeperkel@hotmail.com>
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] A Solution
Date: Mon, 06 Nov 2006 17:53:18 +0000
Gentlemen,
I seem to keep coming back to this particular solution, probably because as
a mechanical guy...I can figure out how to build this. As a pilot, I can
visualize CG, W&B and forces at work, but what I am not......is an
engineer.
That lack of knowledge and my desire to build a successful and uniquely
spectacular project, is partly the impetus to pursue Naval
Architecture,....
but I am not there yet. I do not yet know how to calculate for surface
stability of floating bodies, but I do have an idea of what's required.
the link below is in case the photo won't load
http://www.frappr.com/?a=viewphoto
<http://www.frappr.com/?a=viewphoto&id=269116&pid=3198712&myphotos=1>
&id=269116&pid=3198712&myphotos=1
My post to Rick about width is what it is.....a guess. Would this be
unstable at 8.5' ???, the key is in the math. Somewhere in here is the
answer to this particular option. I'll let Jay speak to the sea sled option
as it's beyond my ability to envision it.
Thanks to everyone for the participation, the results are self evident.
Joe
><< cg.JPG >>
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