Titanic tourist sub missing

[dirtywick]

There's youtube short showing a tanker railcar under vacuum and it's sudden collapse.

i know they have to say it was sudden and painless, but no way

 

[Myriad]

i know they have to say it was sudden and painless, but no way

The Titan didn't do what the railroad car did. It was about 300 times more violent than that. Not like "inside a beer can being crushed by a big fist." More like "inside the casing of a bunker-buster bomb going off."

 

[Andy_Ross]

Someone was saying that the sudden compression of the air would have given enough heat and oxygen pressure to cause everything to burn in a flash.

 

[dirtywick]

oh, so you're saying they were just 300 times more violently exploded and burned in a flash

 

[novaphile]

I guess I won't be buying that carbon fiber bicycle after all. Aluminum is light enough. And titanium is available, though a bit expensive.

I've mentioned carbon fiber bicycles before, and was biting my tongue.

I've seen them fail catastrophically in really mild circumstances, where every other bike was fine. (i.e. rough rough and only the cf bikes fail.)

A cycling friend had his bike vanish in a puff of dust when he 'touched' a guard rail another ended up on the side of the road (only two blocks from here) clutching a sticky black balloon with the front half of his bike missing after he t-boned a turning car.

Carbon fiber is wonderful until it fails, and then it's just black corn-flakes.

(I carefully inspect my front forks before every ride because I'm that worried about them failing)

 

[Orphia Nay]

The Logitech gamepad survived. Confirms my opinion of them being excellent, inexpensive gamepads.

https://twitter.com/mearmalite10/status/1672294066535677952

Twitter has given a caption to that that says it's an altered image, and a link to
https://www.pmel.noaa.gov/eoi/nemo1998/education/pressure.html

 

[Orphia Nay]

A photo shows the submersible's monitor was screwed into the carbon fibre.

 

[Skeptical Greg]

Where is the photo of the submersible's monitor screwed into the carbon fibre?

 

[Orphia Nay]

Where is the photo of the submersible's monitor screwed into the carbon fibre?

In my photo. To the right. I'll see if I can upload a bigger version.

 

[TellyKNeasuss]

Wasn't the near disaster of Aloha Airlines flight 243 (in 1988), in which part of the fuselage broke off, blamed in part on the large number of pressurization/depressurization cycles that the plane underwent since it was used for numerous short flights every day causing material fatigue to the fuselage? In the case of the Titan, rather than there being a large number of cycles, instead there were a number of extreme variations in pressure against the hull (from around 15 psi to 5500 psi). Is the stress to the hull due to the absolute pressure or the variations in stress against the hull as it descended and ascended the more likely culprit?

 

[Skeptical Greg]

In my photo. To the right. I'll see if I can upload a bigger version.

I doubt that is a photo of the actual vessel..

A video that shows more detail is here:

https://www.bizjournals.com/seattle...gate-titan-sub-titanic-wreck-dives-tours.html

 

[bruto]

I doubt that is a photo of the actual vessel..

A video that shows more detail is here:

https://www.bizjournals.com/seattle...gate-titan-sub-titanic-wreck-dives-tours.html

But he says right at the start that this is the Cyclops 1. It's not entirely clear how closely it resembles Titan.

 

[Skeptical Greg]

OK, I jumped too quick, but I doubt the carbon fiber containment vessel constitutes the innermost wall of the vessel..

I'll keep digging.

 

[Orphia Nay]

This short video about the debris that's been found doesn't include anything about the controller, which would be fairly important if it were really found.

Titanic sub: What debris has been found and what does it mean? https://www.bbc.co.uk/news/world-us-canada-65992578

It also says that the "middle" of the Titan was carbon fibre.

 

[smartcooky]

Wasn't the near disaster of Aloha Airlines flight 243 (in 1988), in which part of the fuselage broke off, blamed in part on the large number of pressurization/depressurization cycles that the plane underwent since it was used for numerous short flights every day causing material fatigue to the fuselage? In the case of the Titan, rather than there being a large number of cycles, instead there were a number of extreme variations in pressure against the hull (from around 15 psi to 5500 psi). Is the stress to the hull due to the absolute pressure or the variations in stress against the hull as it descended and ascended the more likely culprit?

Correct. That 737 was something like 19 years old and had flown over 35,000 hours, but it had undergone almost 90,000 flight cycles (take off - climb & pressurize - fly route - approach & depressurize - land). This is a lot more than similar airliners of the same type, and more than twice the number of flight cycles it was designed to undergo.

I really hope catastrophic hull collapsed was what actually happened to the Titan, because it would be mercifully quick. I watched an interview with both James Cameron and Robert Ballard this morning - Cameron said that at the depth they think this happening the collapse would be "so quick that you would be dead before you even realized anything was wrong. The walls would collapse at supersonic speed."

There will be no bodies to find.. all five on board would have been turned into pink liquid in milliseconds.

 

[Skeptical Greg]

I spoke too soon..

Still hard to believe there is not some type of liner inside the CF hull.

 

[Orphia Nay]

Here's a link to the original of the photo I was posting, from OceanGate's Facebook page:

https://m.facebook.com/OceanGateInc/photos/a.346609532190941/1751445178374029/?type=3

 

[alfaniner]

I can't help but think in visual terms, and be reminded of the scenes of the result of that lone cowboy trying to be the first one to bust through the portal gate in The Expanse, or the fate of the girlfriend near the end of Akira.

Here's a link to the original of the photo I was posting, from OceanGate's Facebook page:

https://m.facebook.com/OceanGateInc/photos/a.346609532190941/1751445178374029/?type=3

Wow, those extension caps on the controller look almost exactly like a 3D design I posted on Tinkercad a few weeks ago.

 

[Andy_Ross]

It doesn't look like any of the electronics are waterproof.
I would think things got pretty damp in there with so many people crammed in.

 

[dann]

In messages seen by the BBC, Rob McCallum told OceanGate CEO Stockton Rush that he was potentially putting his clients at risk and urged him to stop using the sub until it had been certified by an independent agency.
Mr Rush responded that he was "tired of industry players who try to use a safety argument to stop innovation".
The tense exchange ended after OceanGate's lawyers threatened legal action, Mr McCallum said.
"I think you are potentially placing yourself and your clients in a dangerous dynamic," he wrote to the OceanGate boss in March 2018. "In your race to Titanic you are mirroring that famous catch cry: 'She is unsinkable'".
In the messages, Mr Rush, who was among five passengers who died when the Titan experienced what officials believe was a "catastrophic implosion" on Sunday, expresses frustration with the criticism of Titan's safety measures.
"We have heard the baseless cries of 'you are going to kill someone' way too often," he wrote. "I take this as a serious personal insult."
Titan sub CEO dismissed safety warnings as 'baseless cries', emails show (BBC, June 23, 2023)

You couldn't make up stuff like this.