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Hi Patrick.
The outside water pressure is trying to get inside
the air bubble of your ambient sub's hull and is pushing against the outside of
your hull.
That outside water pressure in addition to pushing
against the outside of your hull, also pushes against an external valve and
or sensor, which in turn then causes air from
your high pressure tanks to flow into the hull's
interior until the hull's interior air pressure is the same as the outside water
pressure which is pushing against the valve or sensor,
which then equalizes the pressure against the valve
or sensor and causes that sensor or valve to shut off again and this causes your
air flow to the interior to shut off.
So you use the outside water pressure to activate
your hull's interior air tanks causing them to flow air into the hull interior
until that interior is the
same air pressure as the outside water pressure.
Effectively cancelling out the outside water pressure. That is how the outside
pressure influences the inside pressure.
In a 1 atm sub the only thing keeping the water
pressure from getting to the hull's air bubble is the strength of the pressure
hull. Nothing else.
No air pressure vs. water
pressure equalization like in an ambient.
Hope this answered your questions.
Bill Akins.
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