Looks like The Titanic killed a few more people

[igor_kavinski]

If the womens hadn't been on the sub the men wouldn't have been tempted. It's the womens fault for wanting to serve in the first place, men folk just can't be trusted because reasons.

And women will say, if the men had been castrated, they wouldn't be tempted

 

[amenx]

Leaked transcript of the communications between sub and surface ship.

 

[APU_Fusion]

Yes. They ruined my Submarine Service.

I would say you are a Dick but it sounds like you got enough of that while at sea. see I can belittle like a useless twit too

 

[Heartbreaker]

Leaked transcript of the communications between sub and surface ship.

I saw that "transcript" on some forums. I'm betting it's fake.

 

[amenx]

I saw that "transcript" on some forums. I'm betting it's fake.

Could very well be fake, but from someone familiar with how these sort of submersibles operate? Or someone making everything up on the fly? The latter very unlikely imo.

 

[Heartbreaker]

Could very well be fake, but from someone familiar with how these sort of submersibles operate? Or someone making everything up on the fly? The latter very unlikely imo.

These days, they could just use ChatGPT to whip up a fake.

 

[Indus]

Leaked transcript of the communications between sub and surface ship.

Hmm seems like conjecture.. since the depth, letting go of ballast, descending too fast are facts.

What I'm very curious is the sounds from aft bit.

If its true.. that would mean the glue joint where the carbon fiber connected to titanium in the aft section was the failure point leading to the implosion.

And that would totally explain the force of water pushing the viewing portal glass out as well.

The physics matches up!



Now about something else I thought of.. Some of the passengers were of a heavy build. Lets say they were a combined 50 lbs overweight vs normal.

Would that be enough to make the descent that much faster?

 

[pmv]

I don't really understand how the joints between the titanium bits and the carbon fibre bit worked. There were titanium rings there, between each join, and the three sections were glued to those rings.

But, aside from comments I've seen arguing those rings were too narrow, with too small an area of contact between each part, and claims that it was sloppy to glue those bits together in a non-clean-room environment, surely the titanium bits and the CF bit would behave differently in response to pressure changes (and to temperature changes)? One material would surely compress more or less than the other? (I don't know which way round it is, i.e. what the numerical values are wrt to the behaviour of CF vs Titanium, but they aren't going to be exactly the same)

So how can those joining rings be expected to hold? Wouldn't the different parts be in effect pulling away from each other as a concequence of their different reactions to pressure increasing and temperature decreasing?

 

[skyking]

you are beginning to understand the problems. Every other deep sub is welded together of homogeneous material, namely steel or titanium. There is no "little bit if this, little bit of that" bullshit going on.

 

[[DHT]Osiris]

you are beginning to understand the problems. Every other deep sub is welded together of homogeneous material, namely steel or titanium. There is no "little bit if this, little bit of that" bullshit going on.

Heterogeneous materials glued together often separate at sea level, in open air... I can't fathom (har) thinking that would survive long understand.

 

[igor_kavinski]

Heterogeneous materials glued together often separate at sea level, in open air... I can't fathom (har) thinking that would survive long understand.

Good thing he died. If he HAD the sense to keep checking the sub for cracks and retiring it, creating a new one and continuing his business like that, pretty soon he would have lined up investors to build planes or even rockets. Imagine those things glued together.

 

[pcgeek11]

I would say you are a Dick but it sounds like you got enough of that while at sea. see I can belittle like a useless twit too

LOL. Like you know anything about Submarines or Submarine culture.

Belittle? Like you think you could even hurt my feelings.

 

[Indus]

LOL. Like you know anything about Submarines or Submarine culture.

Belittle? Like you think you could even hurt my feelings.

Submarine: Marines in a sub

Submarine CUlTure: lure idiots, CUT away brain cells, transform into marines in a sub??

 

[hal2kilo]

Good thing he died. If he HAD the sense to keep checking the sub for cracks and retiring it, creating a new one and continuing his business like that, pretty soon he would have lined up investors to build planes or even rockets. Imagine those things glued together.

Lots of things on an airplane are held together with adhesives. Relax.

 

[Paratus]

I don't really understand how the joints between the titanium bits and the carbon fibre bit worked. There were titanium rings there, between each join, and the three sections were glued to those rings.

But, aside from comments I've seen arguing those rings were too narrow, with too small an area of contact between each part, and claims that it was sloppy to glue those bits together in a non-clean-room environment, surely the titanium bits and the CF bit would behave differently in response to pressure changes (and to temperature changes)? One material would surely compress more or less than the other? (I don't know which way round it is, i.e. what the numerical values are wrt to the behaviour of CF vs Titanium, but they aren't going to be exactly the same)

So how can those joining rings be expected to hold? Wouldn't the different parts be in effect pulling away from each other as a concequence of their different reactions to pressure increasing and temperature decreasing?

In that same vein a normal COPV (composite overwrap pressure vessel) which contains a high pressure fluid the interior is a thin liner meant to contain whatever fluid is to be contained. It’s also unable to contain the fluid at the pressure required. That’s where the fiber (carbon, glass, Kevlar, etc) wrap comes in.

The woven wrap is then impregnated with a binding agent like epoxy. Together these provides the necessary strength to contain the high pressure fluid in a light weight pressure vessel (when compared to a solid metal pressure vessel).



One area where COPVs have a tendency to fail is around the valves that allow you to fill & drain the COPV. It’s a lot harder to get the weave just right around extrusions sticking out of the pressure vessel. Any area that doesn’t have enough support from the weave can leak or burst so significant qualification testing of the COPV is important to validate the design and manufacturing process.

So normal COPVs which are in tension have issues with the strength around their end caps while the Titan which was in compression had to bind to a dissimilar end cap material. That’s a very challenging engineering issue especially for something as bespoke as the Titan where you aren’t going to get to test a statistically significant number of samples.

 

[igor_kavinski]

Lots of things on an airplane are held together with adhesives. Relax.

In the outer frame?

 

[pmv]

In the outer frame?

Well, even then, in an airplane the pressure differential between inside and outside is unlikely to ever be more than 1 atm, no? So the stresses to be withstood will be much smaller*. With a submersible it's going to be an orders-of-magnitude larger problem.

* I gather (from watching youtube videos about disasters) that the big stresses there will come from excessive g-force and acceleration, so maybe there are still hazards you might encounter if you build your plane from paper mache and balsa wood and glue...but still doubt it will be as extreme as the squishing you get from km of water above you.

 

[brycejones]

LOL. Like you know anything about Submarines or Submarine culture.

Belittle? Like you think you could even hurt my feelings.

Do you even have feelings?

 

[APU_Fusion]

LOL. Like you know anything about Submarines or Submarine culture.

Belittle? Like you think you could even hurt my feelings.

yep, you are a Dick. Easy enough to put on ignore. enjoy your ignorance my misogynistic little buddy 👍

 

[APU_Fusion]

Do you even have feelings?

He is a laughably ignorant troll who can’t even grasp his own ignorant misogyny.

 

[Zorba]

Good thing he died. If he HAD the sense to keep checking the sub for cracks and retiring it, creating a new one and continuing his business like that, pretty soon he would have lined up investors to build planes or even rockets. Imagine those things glued together.

Planes and rockets are glued together all the time.

 

[darkswordsman17]

Planes and rockets are glued together all the time.

They also do not undergo the type of pressure experienced deep in the ocean, making such analogies just straight up stupid. It was known you don't do that type of dumb shit for a sub and the guy deliberately disregarded it because he was a moron.

Its like this guy took every guidance and deliberately went the other way, because much like right wingers, they think doing the opposite of established fact is genius. See the little piss baby bragging about how much seamen he subbed for.

New nickname for the pissbaby: Sub-moron, with the chorus of the ballad (title "No wimen allowed") of the Sub-moron being "the seamen came and he went down for it".

It actually perfectly explains him though. He's basically been stuck ever since, pining for the days of being cut off from society where his only concern was eating shitting, following rigid rules, doing menial shit, and killing time with a bunch of other guys where secrets will be kept in a penis shaped object under the sea. He's the little merman, who wants his "se-men wimen haters club" to put up a sign "no wimenz alowed".

 

[Zorba]

In the outer frame?

Yes, most business jets use "metal bond" which is literally glueing metal together. 787, 777x have carbon fiber wings. Structural panels forever have used honeycomb glued to panels, etc.

 

[Zorba]

They also do not undergo the type of pressure experienced deep in the ocean, making such analogies just straight up stupid. It was known you don't do that type of dumb shit for a sub and the guy deliberately disregarded it because he was a moron.

Its like this guy took every guidance and deliberately went the other way, because much like right wingers, they think doing the opposite of established fact is genius. See the little piss baby bragging about how much seamen he subbed for.

New nickname for the pissbaby Sub-moron, with the chorus of the ballad (title "No wimen allowed") of the Sub-moron being "the seamen came and he went down for it". I'm sure you can probably rhyme He-men and semen.

I was responding to a different post, not making any analogy.

 

[[DHT]Osiris]

I feel like it needs to be said, yet again. It's structurally harder to design a submarine than a spaceship.