5 ms·

Here are a couple of quotes I pulled from the USCG press release: > "debris is consistent with a catastrophic implosion of the vessel" > "1600 feet (487 meter

Here are a couple of quotes I pulled from the USCG press release: > "debris is consistent with a catastrophic implosion of the vessel" > "1600 feet (487 meters) from the wreck of the Titanic" > "it is a smooth bottom", "there is no wreckage of the Titanic in the area" > "size of the debris field is consistent with an implosion in the water column" > "there doesn't seem to be any connection between the noises and the location of the debris on the seafloor"

bilekas 3y ago
I'm really curious about the carbon fibre design, I'm not a material expert but I do dive and for tanks they work because of the internal pressure of tank. The 'weaving' is supposed to be link connecting your two hands together interlocking fingers, in one direction you will meet a full resistance, but in the opposite direction your fingers will unlock. I have no idea but seems to me if there is external pressure the weaving would have 'imploded' depending on the design I guess. Really want to know more about this.
- az226 3y ago
  The looking glass was only rated for 4,000 feet. Implosion happened around 9,000 feet, which would suggest the glass handled over twice its rated depth.
  - stjohnswarts 3y ago
    and survived several dives before that to 13000ft, no?
    - IG_Semmelweiss 3y ago
      Flip a coin enough times, it's bound to be tails
    - bilekas 3y ago
      I'm wondering this myself, they don't have any history logged of a trip before. I think this might have been the first one. In minimal fairness, at least the owner put his money where is mouth was. Sidebar : The owner/ceo did a 10 hour overall at max ~3kMeteres A lot of measure of units thrown around in this thread too.
      - pbourke 3y ago
        David Pogue observed them visiting the Titanic. https://www.nbcnews.com/tech/internet/david-pogue-misinformation-misunderstandings-titanic-sub-rcna90617 https://www.nbcnews.com/tech/internet/david-pogue-misinforma...
      - artdigital 3y ago
        They did many many trips There’s also a documentary on bbc about one of those trips
        thevagrant 3y ago
        Many? The picture in the news early on showing signatures of the passengers on a poster titled Mission V. I took that to mean this was their 5th trip with this submersible
    - rovr138 3y ago
      So that’s added stress at pressures that it wasn’t rated for.
    - az226 3y ago
      Pressure cookers that are rated for 15 PSI typically come apart at 75 PSI. But that’s the thing about ratings. The manufacturer guarantees safe usage at 15 PSI and anything above that all bets are off and you’re on your own. Same with milk and expiration dates. Many times the milk is fine after the date, but the dairy won’t guarantee freshness and food safety. Same for this looking glass. It says what the CEO thought about safety. He was willing to take chances and roll the dice. And every once in a while you get snake eyes. The consequences of rolling • • at 9,000ft of depth in the ocean is sadly instant soup. The water entering the vessel would likely be 5,000F degrees or so. While some people say it would be an instant death and not consciously detectable, I disagree. I think they were given just enough time for the brain to go oh shit, but only got to the oh part, and lights out.
  - bilekas 3y ago
    Sorry but for metric units, 9k feet is around <3k~ Looking glass rated 4k 'feet' around 1200 meters.. Not sure as there is a video of the ceo going to 3k meters solo in the titan on a 10~ hour trip.. That said, not much of this craft was 'rated' for anything..
- adql 3y ago
  Your intuition is spot on, carbon fiber is much better at tensile loads than compressive loads. Tensile load capacity is pretty much the resin that keeps the fibers from moving. The most I could find about the design > The entire pressure vessel is comprised of two titanium hemispheres, two matching titanium interface rings, and the 142 cm (56") internal diameter, 2.4-m (100") long carbon fiber wound cylinder – the largest such device ever built for use in a manned submersible. suggest that yeah, they relied entirely on its compressive strength of it
  - bilekas 3y ago
    It's wild how carbon fibre is a insanely powerful in it's application yet it's misused. I'd like to say it's caveat being as you mentioned but honestly, given then community in this field, even the technical diving alone. Someone must have said it to them. Thanks for some numbers, maybe tomorrow will play with the simulations to determine the AP's that could collapse the craft. The titanium hemispheres are probably the best option but the sealing would need to be almost clinical. I'm anxious just thinking about the construction of this sub.
    - solumunus 3y ago
      There is a video going around of the lead guy saying (obviously before this incident) something to the effect of “I will be remembered for innovation and the rules I broke, I was told not to build using such and such materials and I’ve proven people wrong”.
      - davely 3y ago
        “I’ve broken some rules to make this, I think I’ve broken them with good logic and good engineering behind me. The carbon fiber and titanium, there’s a rule you don’t do that – well I did,” said the CEO in an interview in 2021. [1] [1] https://www.youtube.com/watch?v=uD5SUDFE6CA&t=1446s&pp=2AGmC5ACAQ%3D%3D https://www.youtube.com/watch?v=uD5SUDFE6CA&t=1446s&pp=2AGmC...
        3y ago
btgeekboy 3y ago
Part of me has been wondering if the noises being heard might be an unexpected discovery of a military (Russian, Chinese, US) submarine operating in the general area. Don’t they submerge for long periods of time without comms?
- hindsightbias 3y ago
  SOSUS knows where everything is. It recorded the USS Thresher sinking in 1958. https://en.wikipedia.org/wiki/SOSUS https://en.wikipedia.org/wiki/SOSUS
- bagels 3y ago
  There were at least a few rescue craft in the area, most likely the sound was from one of them, if it was real in the first place.
  - mdavidn 3y ago
    The banging sound could be the Titanic itself. Something metallic may still swing in the shifting current after all these years.
- zeven7 3y ago
  The last time there were unexpected noises heard it turned out to be fish farts. https://www.iflscience.com/for-15-years-sweden-thought-enemy-submarines-were-invading-its-territory-it-turned-out-to-be-herring-farts-57782 https://www.iflscience.com/for-15-years-sweden-thought-enemy...
- helios_invictus 3y ago
  They do, but not the depths we're talking about (12,500 feet) https://navalpost.com/how-deep-can-a-submarine-dive/ https://navalpost.com/how-deep-can-a-submarine-dive/ The depth limits of the most known nuclear powered submarines’ depth limits, as follows; Typhoon-class: Test depth 900 m (3,000 ft) Astute-class: Over 300 m (984 ft 3 in) Akula-class: 480 m (1,570 ft) test depth for Akula I and Akula I Improved, 520 m (1,710 ft) for Akula II and III, 600 m (2,000 ft) maximum operating depth Ohio-class: Test depth >240 m (800+ ft) Virginia-class: Test depth >240 m (800+ ft) Borei-class: Test depth 950 m Rubis-class: Test depth 350 m Barracuda-class: Test depth >350 m

bilekas 3y ago

I'm really curious about the carbon fibre design, I'm not a material expert but I do dive and for tanks they work because of the internal pressure of tank. The 'weaving' is supposed to be link connecting your two hands together interlocking fingers, in one direction you will meet a full resistance, but in the opposite direction your fingers will unlock. I have no idea but seems to me if there is external pressure the weaving would have 'imploded' depending on the design I guess. Really want to know more about this.

az226 3y ago
The looking glass was only rated for 4,000 feet. Implosion happened around 9,000 feet, which would suggest the glass handled over twice its rated depth.
- stjohnswarts 3y ago
  and survived several dives before that to 13000ft, no?
  - IG_Semmelweiss 3y ago
    Flip a coin enough times, it's bound to be tails
  - bilekas 3y ago
    I'm wondering this myself, they don't have any history logged of a trip before. I think this might have been the first one. In minimal fairness, at least the owner put his money where is mouth was. Sidebar : The owner/ceo did a 10 hour overall at max ~3kMeteres A lot of measure of units thrown around in this thread too.
    - pbourke 3y ago
      David Pogue observed them visiting the Titanic. https://www.nbcnews.com/tech/internet/david-pogue-misinformation-misunderstandings-titanic-sub-rcna90617 https://www.nbcnews.com/tech/internet/david-pogue-misinforma...
    - artdigital 3y ago
      They did many many trips There’s also a documentary on bbc about one of those trips
      - thevagrant 3y ago
        Many? The picture in the news early on showing signatures of the passengers on a poster titled Mission V. I took that to mean this was their 5th trip with this submersible
  - rovr138 3y ago
    So that’s added stress at pressures that it wasn’t rated for.
  - az226 3y ago
    Pressure cookers that are rated for 15 PSI typically come apart at 75 PSI. But that’s the thing about ratings. The manufacturer guarantees safe usage at 15 PSI and anything above that all bets are off and you’re on your own. Same with milk and expiration dates. Many times the milk is fine after the date, but the dairy won’t guarantee freshness and food safety. Same for this looking glass. It says what the CEO thought about safety. He was willing to take chances and roll the dice. And every once in a while you get snake eyes. The consequences of rolling • • at 9,000ft of depth in the ocean is sadly instant soup. The water entering the vessel would likely be 5,000F degrees or so. While some people say it would be an instant death and not consciously detectable, I disagree. I think they were given just enough time for the brain to go oh shit, but only got to the oh part, and lights out.
- bilekas 3y ago
  Sorry but for metric units, 9k feet is around <3k~ Looking glass rated 4k 'feet' around 1200 meters.. Not sure as there is a video of the ceo going to 3k meters solo in the titan on a 10~ hour trip.. That said, not much of this craft was 'rated' for anything..
adql 3y ago
Your intuition is spot on, carbon fiber is much better at tensile loads than compressive loads. Tensile load capacity is pretty much the resin that keeps the fibers from moving. The most I could find about the design > The entire pressure vessel is comprised of two titanium hemispheres, two matching titanium interface rings, and the 142 cm (56") internal diameter, 2.4-m (100") long carbon fiber wound cylinder – the largest such device ever built for use in a manned submersible. suggest that yeah, they relied entirely on its compressive strength of it
- bilekas 3y ago
  It's wild how carbon fibre is a insanely powerful in it's application yet it's misused. I'd like to say it's caveat being as you mentioned but honestly, given then community in this field, even the technical diving alone. Someone must have said it to them. Thanks for some numbers, maybe tomorrow will play with the simulations to determine the AP's that could collapse the craft. The titanium hemispheres are probably the best option but the sealing would need to be almost clinical. I'm anxious just thinking about the construction of this sub.
  - solumunus 3y ago
    There is a video going around of the lead guy saying (obviously before this incident) something to the effect of “I will be remembered for innovation and the rules I broke, I was told not to build using such and such materials and I’ve proven people wrong”.
    - davely 3y ago
      “I’ve broken some rules to make this, I think I’ve broken them with good logic and good engineering behind me. The carbon fiber and titanium, there’s a rule you don’t do that – well I did,” said the CEO in an interview in 2021. [1] [1] https://www.youtube.com/watch?v=uD5SUDFE6CA&t=1446s&pp=2AGmC5ACAQ%3D%3D https://www.youtube.com/watch?v=uD5SUDFE6CA&t=1446s&pp=2AGmC...
      - 3y ago

btgeekboy 3y ago

Part of me has been wondering if the noises being heard might be an unexpected discovery of a military (Russian, Chinese, US) submarine operating in the general area. Don’t they submerge for long periods of time without comms?

hindsightbias 3y ago
SOSUS knows where everything is. It recorded the USS Thresher sinking in 1958. https://en.wikipedia.org/wiki/SOSUS https://en.wikipedia.org/wiki/SOSUS
bagels 3y ago
There were at least a few rescue craft in the area, most likely the sound was from one of them, if it was real in the first place.
- mdavidn 3y ago
  The banging sound could be the Titanic itself. Something metallic may still swing in the shifting current after all these years.
zeven7 3y ago
The last time there were unexpected noises heard it turned out to be fish farts. https://www.iflscience.com/for-15-years-sweden-thought-enemy-submarines-were-invading-its-territory-it-turned-out-to-be-herring-farts-57782 https://www.iflscience.com/for-15-years-sweden-thought-enemy...
helios_invictus 3y ago
They do, but not the depths we're talking about (12,500 feet) https://navalpost.com/how-deep-can-a-submarine-dive/ https://navalpost.com/how-deep-can-a-submarine-dive/ The depth limits of the most known nuclear powered submarines’ depth limits, as follows; Typhoon-class: Test depth 900 m (3,000 ft) Astute-class: Over 300 m (984 ft 3 in) Akula-class: 480 m (1,570 ft) test depth for Akula I and Akula I Improved, 520 m (1,710 ft) for Akula II and III, 600 m (2,000 ft) maximum operating depth Ohio-class: Test depth >240 m (800+ ft) Virginia-class: Test depth >240 m (800+ ft) Borei-class: Test depth 950 m Rubis-class: Test depth 350 m Barracuda-class: Test depth >350 m