Automatic buoyancy controls (was RE: Commercially available sub plans?)

[Paul Anderson <hacker@geeky1.ebtech.net>]

On Wed, 5 Aug 1998, Ben Trumble wrote:

> I wonder how much the automatic bouyancy
> controls sell for above and beyond the hull price -- and better yet, how
> they work? 
>
Now, I've been thinking to myself abit about buoyancy control on an
ambient pressure sub...  I've seen one sub that just kept itself neutral,
no matter the depth, and used propulsion and small "wings" at either side
to control depth.  With a system like that, you could simply use a valve
attached to a float - you have a pump constantly pulling air out of the
cabin, the higher the float on the valve(the higher the water), the faster
it puts air in, and as the internal water-level lowers, so does the air
input.  That way you maintain a constant buoyancy, and a constant air
flow.  What does everyone think?  TTYL!

---
Paul Anderson
hacker@geeky1.ebtech.net
"This is Maurice, our sheep-hearding carrot."