Soldato
Wonder why you have to go barefoot in this submersible...
Titanic submersible confirmed destroyed with loss of all five souls onboard.
- Thread starter danlightbulb
- Start date
Commissario
Not according to everything I've read this afternoon, it happens so quick, they wouldn't even know it was coming. One moment you're there, a few milliseconds later, you're not. Not enough time for the message to travel from the eyes to the brain to even suggest something is happening. Yes, their blood would have boiled but it would have then been cooled and extinguished by the water within miliseconds.
If the pressure hull collapses, you're instant toast.
When a submarine implodes, a variety of fairly ugly things will happen to the crew. If we assume that a pressure hull implodes at 2000 feet (~60 atmospheres), the pressure will increase from 14.7 to about 875 PSI almost instantly. In the parts of the submarine that have volumes of trapped air, it would be like being inside a diesel engine cylinder when begins its compression stroke.
Anything flammable would burst into flames until a huge wall of water slams into the area and snuffs it out again. The impact of the water would cause significant injury to anyone unlucky enough to still be alive and there would be no time to suffer the effects of oxygen poisoning or anything else.
As others have stated, most human tissues are fluid-filled and are for the most part, incompressible. Human lungs and sinuses would be crushed instantly and the immense shock would render them unconscious immediately. Of greater concern would be the surge of incoming seawater, bulkheads, decks, heavy equipment, motors and other random bits of equipment being slammed into the crew at high velocity.
Essentially, the crew would be killed several times over in less than a blink of an eye.
According to several articles about the loss of the Scorpion, when the pressure hull failed, water entering the hull was moving at supersonic speeds and had filled the entire space in within 100 milliseconds.
The collapse produced with a force equivalent to 6000 kg of TNT.
Anything flammable would burst into flames until a huge wall of water slams into the area and snuffs it out again. The impact of the water would cause significant injury to anyone unlucky enough to still be alive and there would be no time to suffer the effects of oxygen poisoning or anything else.
As others have stated, most human tissues are fluid-filled and are for the most part, incompressible. Human lungs and sinuses would be crushed instantly and the immense shock would render them unconscious immediately. Of greater concern would be the surge of incoming seawater, bulkheads, decks, heavy equipment, motors and other random bits of equipment being slammed into the crew at high velocity.
Essentially, the crew would be killed several times over in less than a blink of an eye.
According to several articles about the loss of the Scorpion, when the pressure hull failed, water entering the hull was moving at supersonic speeds and had filled the entire space in within 100 milliseconds.
The collapse produced with a force equivalent to 6000 kg of TNT.
When a submarine exceed its crush depth, and finally implodes, the water rushes in at 200 tons per square inch (or more) at thousands of miles an hour. Everything in the submarine disintegrates into a thousand pieces in an instant. One moment the crew is alive, the next, they are not. No time to think - just <POOF> gone. No time to feel anything - just >POOF< gone. No time to worry - just <POOF> gone
No one in the crew will even have time to think ‘uh oh… this is it’ or even ‘uh oh’. They won’t even have time for their eyes to relay messages to their brain of the ship disintegrating in front of them before they are gone. Here one instant, not there the next.
No one in the crew will even have time to think ‘uh oh… this is it’ or even ‘uh oh’. They won’t even have time for their eyes to relay messages to their brain of the ship disintegrating in front of them before they are gone. Here one instant, not there the next.
As a former reactor operator aboard SSN-595 originally designated Thresher class but changed to Permit class after the Thresher sinking, if I remember my physics this is what happens when the hull implodes.
Remember how a tire pump heats up as you inflate your bike tire? That's what occurs when the water rushes in at tremendous velocity. The air heats up to hundreds of degrees in a millisecond burning you alive just to extinguish you within that same second.
Remember how a tire pump heats up as you inflate your bike tire? That's what occurs when the water rushes in at tremendous velocity. The air heats up to hundreds of degrees in a millisecond burning you alive just to extinguish you within that same second.
That acoustic signal originated near 46-10S, 59-42W at 1358Z (GMT) on 15 November 2017. It was produced by the collapse (implosion) of the ARA SAN JUAN pressure-hull at a depth of 1275-feet. Sea pressure at the collapse depth was 570 PSI. The frequency of the collapse event signal (bubble-pulse) was about 4.4 Hz.
The energy released by the collapse was equal to the explosion of 12,500 pounds of TNT at the depth of 1275-feet. That energy was produced by the nearly instantaneous conversion of potential energy (sea-pressure) to kinetic energy, the motion of the intruding water-ram which entered the SAN JUAN pressure-hull at a speed of about 1800 mph.
The entire pressure-hull was completely destroyed (fragmented/compacted) in about 40 milliseconds (0.040s or 1/25th of a second), the duration of the compression phase of the collapse event which is half the minimum time required for cognitive recognition of an event.
Although the crew may have known collapse was imminent, they never knew it was occurring. They did not drown or experience pain. Death was instantaneous.
The energy released by the collapse was equal to the explosion of 12,500 pounds of TNT at the depth of 1275-feet. That energy was produced by the nearly instantaneous conversion of potential energy (sea-pressure) to kinetic energy, the motion of the intruding water-ram which entered the SAN JUAN pressure-hull at a speed of about 1800 mph.
The entire pressure-hull was completely destroyed (fragmented/compacted) in about 40 milliseconds (0.040s or 1/25th of a second), the duration of the compression phase of the collapse event which is half the minimum time required for cognitive recognition of an event.
Although the crew may have known collapse was imminent, they never knew it was occurring. They did not drown or experience pain. Death was instantaneous.
I was reading about a decompression accident that happened with an oil rig a while back, some welders had been on the bottom.
Something went wrong and the vessel they were in decompressed instantly.
Apparently, the pressure was so great that it separates the cholesterol from the blood, so you end up with fat sprayed all over the place.
The deep ocean and pressures involved make space flight seem tame…
Soldato
- Joined
- 25 Nov 2005
- Posts
- 12,484
It's said that when you're about to die, time slows down for you
Why Time Stops at Near Death
During a near-death experience people have a sense of timelessness.
www.psychologytoday.com
Of course we'll never know for those whose experience wasn't near, not until we find them in the next life or the real life if this is a simulation
Permabanned
On my Wikipedia travels I've ended up looking at this : https://en.m.wikipedia.org/wiki/Deep-sea_gigantism (see gallery)
Jesus Christ there are some weird things that live in the sea. One could call it alien like... Thank god we live on land.
Jesus Christ there are some weird things that live in the sea. One could call it alien like... Thank god we live on land.
Last edited:
Associate
- Joined
- 19 May 2010
- Posts
- 1,251
The Byford Dolphin - it was mentioned a few pages back. One of the men had opened a door ever so slightly and the force of the pressure change pushed him through it, internal organs first, finishing up 30ft past it. Not the nicest way to go.
Associate
- Joined
- 19 May 2010
- Posts
- 1,251
Given the abundance of life in the sea and the idea that it was where life first evolved, does that make US the aliens?
Commissario
Totally the opposite to a sudden compression, still nasty.
Associate
If they magically appear on the surface of the water it's basically the script to The Abyss.
Soldato
- Joined
- 25 Nov 2005
- Posts
- 12,484
Yeah it's the difference between opening a bottle of pop, or standing on the empty bottle
That's a rather extremely simplification of what actually happened lol
Last edited:
He's talking about the Byford Dolphin incident, I mentioned it earlier in this thread, absolutely awful, albeit instant way to go.
The capsule violently decompressed and blasted away from the trunk, killing Crammond and severely injuring Saunders, while inside the chamber the pressure dropped instantaneously from 9 atmospheres to one in an instant. Hellevik, crouching in the trunk, was blown apart, scattering body parts across the rig deck. One observer described finding his liver “complete as if dissected out of the body,” while part of his spine was found 10 meters above the chamber on the rig derrick. The other divers in the chamber fared little better. Autopsies of Coward, Lucas, and Berergsen revealed lumps of white fat clogging their arteries and veins – proteins which had cooked and precipitated as their blood flash-boiled. Mercifully, all four divers are believed to have died instantly and painlessly.
The Most Gruesome Death: the Byford Dolphin Accident
Imagine working 100 metres beneath the sea, a hostile place that sunlight never reaches and where temperatures can plunge to a few degrees above freezing. All your off hours are spent in a tiny, cramped metal tube, breathing a mixture of gases that makes it hard for you to speak and constantly...
www.todayifoundout.com
Asi I said before, do NOT look for images of this incident. It WILL haunt you for a long, long time.
Last edited:
Soldato
- The pilot steers with a modified video game controller
Logitech apparently. Seems a real pro outfit.....
Something to do with like how they say its bad to wear tight shoes on a plane?
Soldato
- Joined
- 25 Nov 2005
- Posts
- 12,484
They're not that bad, just looks like if you asked somebody to poorly try and create a rough image of a human body out of corned beef
Soldato
Your a barrel of laughs tonight.
Can confirm your correct though , we had a small flood at 500ft in auxiliary machinery room when a cooling service flange decided it was time to leak ( seawater cooling at 10PSI above sea pressure ) compartment filled up in literally seconds . Luckily it was a small compartment and was contained just as quickly but very scary stuff .
Emergency surface was fun though.
I also took part in this
Oh and I brushed shoulders with Simon Le Bon at 03:00 on a Sunday morning as well !
HMS Otus (Collision) (Hansard, 21 July 1988)
HMS Otus (Collision) (Hansard, 21 July 1988)
api.parliament.uk
Last edited:
Commissario
Re the joystick used as a controller, it actually makes sense.
Rather than reinvent the wheel, you take a tried, tested mass production item that you can carry spares of.
IIRC several bits of military and scientific gear take exactly the same approach, they'll use what is essentially a throw away device and something like a game controller is idea as the users are already used to them, they're cheap enough to both carry spares and replace every time if needed.
It's not much different to using a standard mouse or trackball on the computer that it's linked up to, especially if there are spares/other methods of input and the sub is generally going to be moving very slowly.
Having said that, the thing I watched showed them having the controller set up incorrectly at one point which is not exactly confidence inspiring as you'd hope they'd have at least locked the controller profile.
Rather than reinvent the wheel, you take a tried, tested mass production item that you can carry spares of.
IIRC several bits of military and scientific gear take exactly the same approach, they'll use what is essentially a throw away device and something like a game controller is idea as the users are already used to them, they're cheap enough to both carry spares and replace every time if needed.
It's not much different to using a standard mouse or trackball on the computer that it's linked up to, especially if there are spares/other methods of input and the sub is generally going to be moving very slowly.
Having said that, the thing I watched showed them having the controller set up incorrectly at one point which is not exactly confidence inspiring as you'd hope they'd have at least locked the controller profile.
Now I'm wanting a tomato and corned dog sandwich... thanks.
Soldato
I can certainly agree with why it's been used in that sense. But there's also a good reason why nothing in the sky is flying around with an xbox controller. Something like this should have bespoke controls for the job, with high quality components that are rated for the temperatures, humidities and pressures they will be exposed to, to ensure they work reliably.
Did it have a guide cable or rope? Surely if your doing an expedition like this you would launch down and have an attachment from something if the sub had issues say half way down people who are floating above could winch. I know it's a long way. But for security and peace of mind .
I would not like to be bolted from outside and hope everything works inside , it would be a cool trip but super anxiety
I would not like to be bolted from outside and hope everything works inside , it would be a cool trip but super anxiety
Last edited:
A cable like that would weighy several tons and would make the thing virtually immovable.