fka ftc said:Magnets are your friend here. Particularly with carbon fiber you could either avoid the through hull connection... or you could have the ballast secured by electrified magnets that dropped in total power loss.txags92 said:The problem with that is that it requires a through hill connection to make it accessible from inside, and every through hull penetration is another point of potential weakness. I would rather see a ballast release that is held closed as long as the communications circuits are active, but automatically opens if the circuit connection is lost for longer than xx minutes.fka ftc said:
#truth
I would think on an experimental machine you would want simple backups for things like the controller. For instance, is the ballast release mechanical and operable with no power? Or does it rely on a circuit that becomes inoperable due to power failure.
Complete power failure would mean no modem for comms and potential no ability to resurface. Nothing I have seen yet shows what redundancy they had or did not have in place.
The batteries would sink you.