Debris found came from missing Titan sub, says friend of passengers

Post by elromulous » Fri, Jun 23, 2023, 3:15 AM UTC

carabiner wrote: post #708

xvector wrote: post #696

Earlier quoted context omitted.

In an interview with James Cameron, he mentions[1] that he and other submersible industry experts believe that the system worked and that they did in fact have warning, as they had dropped the weights (which were found far away from the debris field) and were attempting to resurface before the implosion: [1]: "This Oceangate sub had sensors on the inside of the hull to give them a warning when it was starting to crac…

Just fucking insane. In aerospace everyone knows that when a crack starts, IT'S OVER. Crack propagation is extremely rapid after that once nucleation has occurred. Your only hope is to prevent nucleation sites in the first place. Except it's extremely hard to characterize fatigue limits without tons of testing and even for metals there is wide variation for identical parts, not even getting into composites. Which of…

Post by lsh123 » Fri, Jun 23, 2023, 3:16 AM UTC

jacquesm wrote: post #643

pests wrote: post #622

Earlier quoted context omitted.

Wow these numbers blow my mind. I imagined much deeper but some of these seem literally just below the surface.

'just below the surface' -> already at very impressive pressures and given the complex shape of their hulls absolute marvels of engineering. 240 meters below isn't 'just below the surface', that's pretty deep. That the ocean is much deeper is a simple fact but that should not diminish your appreciation for the differences between a 'regular' submarine and a deep sea vessel. Which is also why the latter tend to be ext…

Post by penlopt » Fri, Jun 23, 2023, 3:20 AM UTC

danso wrote: post #6

I wonder if U.S. agencies (e.g. the Navy) had picked up the sound of the implosion days ago, back when the Titan was said to have lost communication, and knew all this time that the Titan had likely already been destroyed. But there's no incentive for them to publicly say anything, as it would hint to their underwater surveillance capabilities. And the "rescue effort" is good practice for their crews. I watched most…

Post by lsh123 » Fri, Jun 23, 2023, 3:23 AM UTC

carabiner wrote: post #708

xvector wrote: post #696

Earlier quoted context omitted.

In an interview with James Cameron, he mentions[1] that he and other submersible industry experts believe that the system worked and that they did in fact have warning, as they had dropped the weights (which were found far away from the debris field) and were attempting to resurface before the implosion: [1]: "This Oceangate sub had sensors on the inside of the hull to give them a warning when it was starting to crac…

Just fucking insane. In aerospace everyone knows that when a crack starts, IT'S OVER. Crack propagation is extremely rapid after that once nucleation has occurred. Your only hope is to prevent nucleation sites in the first place. Except it's extremely hard to characterize fatigue limits without tons of testing and even for metals there is wide variation for identical parts, not even getting into composites. Which of…

Post by MisterBastahrd » Fri, Jun 23, 2023, 3:25 AM UTC

theklub wrote: post #248

soperj wrote: post #151

Earlier quoted context omitted.

At least he died doing it and not someone he employed.

Honestly given all the red flags he ignored it seems like he had a death wish, or at the very least got a thrill from risking his life on these trips. Otherwise I can't wrap my head around the stupidity of the whole thing.