I just dont see anyway that the loss of contact wasn't the point when the thing imploded, it's like a plane with engine issues, the first thing they do is send a message saying 'we have a problem' in the case of the sub if he was desperately jettisoning ballast he would have radioed it in, it also isn't really in line with how things implode, that isn't a slow process, implosions are by their nature a process where everything is fine....and then your dead
I just dont see anyway that the loss of contact wasn't the point when the thing imploded, it's like a plane with engine issues, the first thing they do is send a message saying 'we have a problem' in the case of the sub if he was desperately jettisoning ballast he would have radioed it in, it also isn't really in line with how things implode, that isn't a slow process, implosions are by their nature a process where everything is fine....and then your dead
Contact is done by acoustic modem which is intermittent depending on water conditions like density changes, and has been reported to have been lost multiple times on prior trips so it's possible they lost contact prior to the implosion.
Contact is done by acoustic modem which is intermittent depending on water conditions like density changes, and has been reported to have been lost multiple times on prior trips so it's possible they lost contact prior to the implosion.
Losing communications sounds like the norm for them. I suspect this is why the mother ship didn't report anything to the authorities right away. They cheated death so much, they probably thought this was going to another cool story to tell.
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Last edited by FlamesAddiction; 07-06-2023 at 04:32 PM.
Contact is done by acoustic modem which is intermittent depending on water conditions like density changes, and has been reported to have been lost multiple times on prior trips so it's possible they lost contact prior to the implosion.
fair enough, I still can't see anyway this wasn't sudden and unexpected
fair enough, I still can't see anyway this wasn't sudden and unexpected
I think you are comparing this failure to a vaccuum collapse of a tank, rail car or pop can caused by condensing Vapours. In that scenario you rapidly go from 15psia to 0psia and rapidly cross the 1PSI or so vaccuum rating of these things and the metal yields and fails relatively instantly.
In this scenario to have a composite material so you likely have delamonations which are week points that start to crack and arrest themselves at various pressures as decent is occuring. You are also only gaining about 200 kpa of pressure a minute on something designed to 35000 kpag.
You also have the strain gauges on the inner hull which as the hull becomes compromised would show increased strain.
So in general I don’t think collapse is instant, also given the reporting they had dropped ballast and were ascending when the failure occurred so they knew they were in trouble.
I think you are comparing this failure to a vaccuum collapse of a tank, rail car or pop can caused by condensing Vapours. In that scenario you rapidly go from 15psia to 0psia and rapidly cross the 1PSI or so vaccuum rating of these things and the metal yields and fails relatively instantly.
In this scenario to have a composite material so you likely have delamonations which are week points that start to crack and arrest themselves at various pressures as decent is occuring. You are also only gaining about 200 kpa of pressure a minute on something designed to 35000 kpag.
You also have the strain gauges on the inner hull which as the hull becomes compromised would show increased strain.
So in general I don’t think collapse is instant, also given the reporting they had dropped ballast and were ascending when the failure occurred so they knew they were in trouble.
Yeah, there is no reason to think they didn't have time to realize things were going wrong. Unless the carbon fiber hull used just the bare minimum number of carbon fiber bands where if just one broke or delaminated, then there would be an instantaneous implosion. From experts that were interviewed by various news outlets, it seems likely that there would have been tapping, cracking, and popping sounds as stands broke until it reached a critical point and finally imploded instantly. The amount of time that it would have taken to reach that point is debatable and conjecture, but it may have been several minutes.
As the hull became thinner, they may have even experienced visual signs such of warping of the sides, which could have also affected other electrical and mechanical parts of the sub, including the ability to lean the sub and drop the ballasts. As the hull continued to delaminate, water would fill in the pore space and the sub would become heavier as well. The outer part of the delaminated hull would have acted like sponge.
The leaked transcript could very well be fake, but the scenario they present seems plausible based on what some experts have stated. The biggest reason to think it's fake IMO, is that some people said the short form writing system that the would use would not look like the words in the transcript. I haven't seen previous mission transcripts to compare though.
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Last edited by FlamesAddiction; 07-06-2023 at 06:18 PM.
Again and again...an average layman, not a marine engineer, can just spot problem after problem with this thing from miles away.
For me, its just...its not 'funny' per se. But as someone who was big into cars in the early 2000s, I know a little (certainly not a lot) but a little bit about Carbon Fiber as it was all the rage for a while, and I've learned a little bit more since then.
The second I started reading about this event the first thing that crossed my mind was: "A Carbon Fiber Hull? That sounds like a terrible idea."
Narrator: "It was."
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