Pray for missing Titanic Submersible

#204
#204
GAVol said:
More likely it's that this was already a recovery effort by last Sunday and they just weren't going public with it.
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Yea, I think OceanGate staff heard the noise from an implosion or had a strong feeling that's what had happened--that's what one source said--but you don't release that information publicly until you get confirmation, out of respect for the families and because you can't be sure until you see the wreckage, as they finally did.
 
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#205
#205
GroverCleveland said:
A submarine implodes at crush depth faster than nerve impulses. Literally dead before you know it.
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Yea I heard the same. It would happen so fast the passengers on the submersible may not even have realized they were in danger. Just descending like normal, then failure/implosion at the speed you said.

I knew the pressures were extreme and it would implode easily and quickly, but I didn't realize it was that fast. To where you don't even get a fraction of a second to realize something has gone wrong. But then again this was some experimental stuff that wasn't rated for those depths I think.
 
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#206
#206
TheDeeble said:
Yea I heard the same. It would happen so fast the passengers on the submersible may not even have realized they were in danger. Just descending like normal, then failure/implosion at the speed you said.

I knew the pressures were extreme and it would implode easily and quickly, but I didn't realize it was that fast. To where you don't even get a fraction of a second to realize something has gone wrong. But then again this was some experimental stuff that wasn't rated for those depths I think.
Click to expand...

Might be a "I hear the hull making a noi..."
 
#208
#208
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#209
#209
turbovol said:
Yea, I think OceanGate staff heard the noise from an implosion or had a strong feeling that's what had happened--that's what one source said--but you don't release that information publicly until you get confirmation, out of respect for the families and because you can't be sure until you see the wreckage, as they finally did.
Click to expand...
Hey, wanted to update earlier posts with some stuff running around the internet about comparing a sub implosion to what happens inside of a diesel cyclinder with the air getting superheated and flash combustion fuel sources which includes "blobs of fat" referencing the humans. So now there are even some memes showing the implosion with a nice satisfying explosion.

I think this is poppycock. ICE depends on the air pressure being compressed evenly within a cylinder with walls of thick cast iron with readily combustible material like aerosolized diesel, not chunks of 70% water. Anyone knows if the rings are really bad and/or compression is low, the engine does not work very well if at all.

A submarine implosion, while extremely fast, is hardly comparable to the cyclinder in an ICE. The implosion compresses and rips the hull unevenly. Once the pressure hull is breached, air is forced out as intact sections are compressed in. Kind of like a really, really high pressure metal balloon with multiple breaches. Lots of bubbles.
 
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#210
#210
So their website is down, but I was able to find some dimensions on a news article. We know that P=F/A=W/V, therefore W (or energy) = PV. The work done by the fluid will use the displaced volume which would just be the volume of the pressure vessel which consists of a cylinder and 2 hemispherical sections. The assumptions are that it's a perfect cylinder and perfect hemispherical sections (not flattened in any way and excluding the view port). The tail section will not be included in the calculation since I'm only concerned with the pressure vessel. So, the volume displaced would be V = pi*r^2*h (cylinder) + (4/3)pi*r^3 (2 hemispherical sections). Below are the dimensions I'm using for this calculation:

1687553611875.png

So the volume displaced by the pressure vessel would be V = pi*(2.3^2)(8.3) + (4/3)(pi)(2.3^3) = 137.938 + 50.965 = 188.903 ft^3 ~ 5.35 m^3.

Based on the previous calculation, the pressure is 6073 psi which is equal to 4.187 * 10^7 pascals.

W = PV = (4.187*10^7 pascals)(5.35 m^3) = 224015200 Joules.

For perspective, 1 kg of TNT has approximately 4.184 million Joules of energy. So, the amount of energy the occupants would have encountered equates to approximately 53.5kg or 118 lbs of TNT. This is just a rough calculation because in reality, some of the energy would be converted into sound, some into heat, kinetic energy, etc. and because of the aforementioned assumptions.
 
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#221
#221
A lot of engineers have weighed in on the Titan's deficiencies. This is one of the better ones I've seen, and he includes
some disturbing information gleaned from the lawsuit filed by the former OceanGate employee against the company. He was fired
after expressing his concerns about the sub's safety issues. For one thing, he notes that the sub was only rated for a depth of 4,000 meters,
and the Titanic is at 3,800 meters, roughly. You never operate that close to your max tolerance. You always give yourself a significant cushion between
operating level and max operating limits.

 
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