[PSUBS-MAILIST] Some thoughts on construction (I'm new so my research is not that thorough)

["Lil Brother LLC" <lil_brother_llc@bellsouth.net>]

First I would like to thank everyone for a warm welcome. It is nice to see a 
group of people that openly accepts the new guy to the group.

I have a question or two that can be broken up into various departments:

1. If the ballast tanks were to totally surround the crew compartment, could 
the ballast area be used structurally?

   I mean if the air were purged, then the ballast area totally sealed 
(with valves). Would this enhance the structure to help with the pressure at 
depth?

   I figure since this area would be totally filled with water (which 
doesn't compress easily) it would add pressure resistance of the hull. (I'm 
only guessing at this......so anyone could point out the error in     my 
view)

   I know totally encapsulating( mostly.....the top hatch could never be 
totally surrounded) the crew compartment within a ballast area would be a 
major pain, and would be hard to up keep over a long     period of time, but 
it may be worth the while if the design is possible.

2. I've noticed a very strange item on the X300( nice fiberglass single 
place, dolphin shaped sub) aft end. I'm very curious what the item is. I 
would also like to know what type of propulsion the sub uses.

3. Are there any electronic valves out there that are pressure rated for our 
uses. I would like some companies to checkout to see if I can use them for 
ballast control.

4. What is the typical way of actuating bow and stern control planes?

Any other things you would like to point out.....would be appreciated. I do 
not have any materials to read regarding the design and construction of a 
sub. My area is very rural and the library is much to be desired.


James Long
Owner/Designer
Lil Brother LLC (Instrument Division) 





************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.

PSUBS.ORG
PO Box 53
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************