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Re: [PSUBS-MAILIST] A Solution

I don't think so. The sub's buoyancy would take its weight as you submerged the barge, and it's MBTs would keep it on the surface as the barge sank out from under it (okay, not SANK, exactly, but you know what I mean). The transition would be the problem as the barge load would lesson as the sub's weight came off and the submerging process would slow down unless you had some honking big valves to regulate it with. Either way, there won't be much popping going on, not with that many tons sloshing around.
Vance 
 
 
-----Original Message-----
From: gslaterp@hotmail.com
To: personal_submersibles@psubs.org
Sent: Mon, 6 Nov 2006 2:08 PM
Subject: Re: [PSUBS-MAILIST] A Solution

Wouldn't it rocket/pop back up to the surface once the load of the sub is released?
 
or am I missing something?
 
George H. Slaterpryce III
www.bridgessoftware.com
www.captovis.com
----- Original Message -----
From: Joseph Perkel
To: personal_submersibles@psubs.org
Sent: Monday, November 06, 2006 1:38 PM
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&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
 
 
 

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