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Topic: Some people have too much time. (Read 1 time) previous topic - next topic

ardly

The density of the sub won't change as long as it's sealed.
Seawater density varies with temperature and salinity, neither of which is uniform in any ocean.
Exactly. So you can build a sub that has a density close to that of sea water. For a particular dive you can adjust the bouyancy to compensate for the expected temperature and salinity by attaching weights. The actual buoyancy of the sub will change during a dive as it moves through thermoclines and haloclines but the idea would be to use the vertical thrusters to compensate for that.
"Facts do not cease to exist because they are ignored" - Aldous Huxley

GoForSmoke

Maybe have mechanism & control outside of the pressure hull.
1) http://gammon.com.au/blink  <-- tasking Arduino 1-2-3
2) http://gammon.com.au/serial <-- techniques howto
3) http://gammon.com.au/interrupts
Your sketch can sense ongoing process events in time.
Your sketch can make events to control it over time.

ardly

Maybe have mechanism & control outside of the pressure hull.

That is where the magnetohydrodynamic drive comes in - no moving parts.
The electronics and battery would be encased in the resin. Unfortunately an electrical connection is required between the electronics and the electrodes of the drive (I thought it might use induction). This means sea water probably would find its way along the connection to the electronics even though the sub would essentially be solid.
"Facts do not cease to exist because they are ignored" - Aldous Huxley

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