The mil now claims they heard a big whomp on their
secret sonar stations right when comms stopped. Still,
they HAD to go looking, MIGHT have been something else.
Anyway, this afternoon they did get cameras down there
and found bits and pieces of the sub. Conclusion is
that there was a sudden implosion - ie some big part
of the pressure hull abruptly collapsed. At the pressure
found at that depth the implosion was just as destructive
as an explosion - tore the thing apart. Probably no
warning, just BOOM.
The boss was on record at one point having said he
had to go kinda off-spec for the big front viewing
window. Didn't explain what that meant however.
Also the pressure vessel was cylindrical, while
at extreme depths the ideal shape is a perfect
sphere. The shape might have cause cyclic flexing
at certain points in the structure - causing fatigue.
The thing was mostly carbon-fiber/epoxy which, while
very strong, CAN suffer fatigue of the epoxy
component with repeated stress. Not really any
good way to CHECK for that either. Difficult
enough with metal. You might SEE it in clear
polycarbonate plastic, but the carbon-fiber
thing was totally opaque.
NOW ... esp because the occupants were rich ...
there's going to be a big push to outlaw such
ventures, make sure they never get financing
or can subcontract. On the whole I'd say that
is the wrong tact and will do a lot more damage
than good in a number of ways. Basically, this
sub - and Bezos's giant-penis rocket and even
Branson's space glider - are toys for the bored
rich. If they've got the cash, and will sign
the waivers, they oughtta be able to play with
their lives. Hey, any time YOU go in the ocean
you're doing the same - it's just cheaper. Lots
of things in there that'll eat you or drown you.
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