- cross-posted to:
- technews@radiation.party
The Titanic director has made 33 dives to the shipwreck and visited ocean depths in a submersible he built himself. He compares OceanGate to the Titanic in that both ignored safety warnings.
- PabloDiscobar ( @PabloDiscobar@kbin.social ) 39•1 year ago
Pressure hulls should be made out of contiguous material like steel, titanium, ceramic or acrylic, he explained, in order to do modeling and finite element analysis to “understand the number of cycles that it can take.” That’s not the case with a composite material, like carbon fiber, made of two different materials blended together.
“And so we all knew that the danger was delamination and progressive failure over time with microscopic water ingress and … what they call cycling fatigue,” he added. “And we knew if the sub passed its pressure test it wasn’t gonna fail on its first dive … but it’s going to fail over time, which is insidious. You don’t get that with steel or titanium.”
- kestrel7 ( @kestrel7@kbin.social ) 2•1 year ago
Like, I don’t trust carbon fiber for my bicycle frame and stick to steel because that shit cracks easily. I can’t believe this guy rolled the dice with carbon fiber on a fucking deep-sea submarine.
- ikantolol ( @ikantolol@kbin.social ) 14•1 year ago
feels like they probably knew that in their heart the moment they see the $30 Logitech controller…
- static ( @static@kbin.social ) 22•1 year ago
Using a game controller is not that unusual.
but it was wireless, that is bad.- PabloDiscobar ( @PabloDiscobar@kbin.social ) 6•1 year ago
What was the controller commanding btw?
- TimeSquirrel ( @TimeSquirrel@kbin.social ) 8•1 year ago
The thrusters on the outside. The goal was to minimize hull penetrations for cabling and things.
- PabloDiscobar ( @PabloDiscobar@kbin.social ) 4•1 year ago
Thank you, so the signal went through the water a little bit. We had a struggle about it in a different thread.
- Flaky_Fish69 ( @Flaky_Fish69@kbin.social ) 1•1 year ago
Probably not, actually. carbon fiber is opaque to blue tooth. Even a single ply carbon shell is enough to block it. My DLG r/c airplane uses an arramid section for the antenna.
- Hyperreality ( @Hyperreality@kbin.social ) 1•1 year ago
Yeah. It’s not unusual, for example:
https://www.popularmechanics.com/military/weapons/a33457596/israeli-carmel-tank-video-games/
I’ve heard of this. Out of curiosity (because I don’t actually know), do you know if the controllers used in military applications are literally “off the shelf” or if they’re “Xbox-like”, which is what most descriptions about them say.
In other words, I suspect the military(s) using these type of controllers are not just ordering them off Amazon and using them as-is, whereas it sounds like that’s exactly what OceanGate did.
- plactagonic ( @plactagonic@beehaw.org ) 1•1 year ago
No in lot of cases it is some “special supplier” - they buy it off the shelf, paint it green and sell it for 3x the price.
- Haan ( @Haan@kbin.social ) 12•1 year ago
Okay, but what does Ja Rule think?