New missing submersible thread...
- Thread starter Bazza
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An imploding vessel had to have made some serious noise, even if it is mostly carbon fiber and not metal.
If there were listening devices that could hear banging (initially thought to be a possible indication of survivors, though now obviously from some other source), I'm wondering why they couldn't hear the sub imploding.
I knew that the collapse of vessels at great depth happened really quickly, but wasn't aware that it was up to the speed of sound. Regardless, I'm glad the passengers didn't likely feel any pain.
Guess we'll never know if there was any warning of the hull beginning to fail, even if it was only seconds. For their sakes, I hope not.
Late Add: After watching the Cameron video above, it would appear that they did have some warning and were trying to execute an emergency ascent before the final catastrophic failure. Still no physical pain at the end, but a terrifying final few minutes.
If there were listening devices that could hear banging (initially thought to be a possible indication of survivors, though now obviously from some other source), I'm wondering why they couldn't hear the sub imploding.
I knew that the collapse of vessels at great depth happened really quickly, but wasn't aware that it was up to the speed of sound. Regardless, I'm glad the passengers didn't likely feel any pain.
Guess we'll never know if there was any warning of the hull beginning to fail, even if it was only seconds. For their sakes, I hope not.
Late Add: After watching the Cameron video above, it would appear that they did have some warning and were trying to execute an emergency ascent before the final catastrophic failure. Still no physical pain at the end, but a terrifying final few minutes.
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Just for grins, I played around with a calculator that calculates the friction loss of water flowing in a pipe. I picked a 96 inch (8 foot) diameter pipe, and figured it as 10 feet long. It ignores sonic flow. The pressure at depth is about 6000 psi, so to have about 6000 psi of friction loss in 10 feet of 8 foot diameter pipe you have to have a flow of 200 million gallons per minute. Just sort of the scale of what happens in an implosion at that depth.
ETA - 200 million gpm is about 5 times the peak flow of Niagara Falls
ETA - 200 million gpm is about 5 times the peak flow of Niagara Falls
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This is why even if I were sitting on a huge pile of "screw you" money, I still wouldn't do stuff like jump in a submarine or buy a ticket for Bezo's penis-rocket. Getting on a plane is nerve-wracking enough.
Oh, of course, I got it stuck in my head you were talking about the speed of the sub.
I is not smrt.
There have been a couple of guys interviewed on TV who think that it was probably carbon fiber fatigue. We'll never know how quickly it collapsed. It makes Lockridge's complaint about the material being only 4" thick, instead of 7", look legit...
I’m familiar with metal fatigue, and was wondering if there was a carbon fiber analogue. Looks like there is.
Regarding how quickly it collapsed: They might have gotten some warning of the beginnings of de-lamination, which could have led to the attempted ascent that Cameron mentions in the video above. But given the pressures involved, once true failure started, it couldn’t have been a matter of even seconds…more like a fraction of a second.
Yeah I had read that analogy before too which is why I said “no bodies”. Maybe they are part of the food chain like TexasBama said, but not like you think more like food for the microbes, shrimp, and such.
Again sounds morbid, but I’d rather go that way vs having my lungs on fire while suffocating in a high co2 environment.
Not sure why that didn’t come out earlier and save millions of dollars for search and rescue.
"But the sound of the implosion was determined to be “not definitive,” the official said, and the multinational efforts to find the submersible continued as a search and rescue effort. “Any chance of saving a life is worth continuing the mission,” the official said."
yeah I get it, but Occam’s razor and all. Could have dropped a remote sub on the area days ago and saved the us and Canadian tax payers millions.
I would say that future joy-rides to Titanic (if there are any) should have the remote RPV at the bottom before the manned descent started. Just so we will know right off the bat.
From everything I have read, It almost sounds like the sub passengers probably never even knew what happened.
Yeah as soon as things went bad they were dead in any scenario it seems, I hope the crew and passenger’s families can take solace in the fact their minds and bodies never knew that.
I'm not too sure about that. It might (except for the current obstructive congress) stimulate some sensible regulation. If you advertised "I have this experimental airplane made of materials uncertified by any body and joined together in a novel way, so you can't get out without outside help. Oh, and it's controlled by a Play Station controller. And I want to charge people a small fortune to ride in it." See how far you get...
Robert Ballard, the oceanographer who located the Titanic, said basically the same thing on World News Tonight. He said the sinking of the Titanic led to the International Ice Patrol, 24 hour/day radio operators, and other regulations to make things safer for the future.
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