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Debris found came from missing Titan sub, says friend of passengers

bbc.com

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Re: Debris found came from missing Titan sub, says friend of passengers

#801

Post by artdigital »

bilekas wrote: post #758
stjohnswarts wrote: post #738

Earlier quoted context omitted.

and survived several dives before that to 13000ft, no?

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.

They did many many trips

There’s also a documentary on bbc about one of those trips

Re: Debris found came from missing Titan sub, says friend of passengers

#802

Post by AYBABTME »

adql wrote: post #631
bilekas wrote: post #574

Earlier quoted context omitted.

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…

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 l…

Aren't most/all materials much stronger in tensile load than compressive loads, because of buckling anomalies?

Re: Debris found came from missing Titan sub, says friend of passengers

#803

Post by midoridensha »

MisterBastahrd wrote: post #756
hahajk wrote: post #703

Earlier quoted context omitted.

There's a difference between knowing that a certain number of people are statistically dying right now vs knowing that 5 specific people are currently dying in a specific way.

Most of the people getting shot in mass shootings aren't doing something stupid on purpose.

I think part of it is what society has deemed an "acceptable loss".

So most developed societies, for instance, are OK with people dying in mangled steel cages on roads because most people in those places think car-based societies are worth the cost in lives.

US society in particular is OK with people dying in mass shootings, because American people think having access to guns is so important.

But if a bunch of people die in an aircraft crash due to negligence, suddenly it's different because that's not an acceptable loss: it was preventable. Mass shootings aren't preventable in the US because most people there value "gun rights" over these deaths, just like the US and many other places value car culture over the deaths caused by cars.

Re: Debris found came from missing Titan sub, says friend of passengers

#805

Post by artdigital »

This is incredibly sad to hear. I’ve been following this closely and had my hopes up after noises were detected in 30 min intervals, which matches emergency procedure to alert rescue teams. Even got me to watch the documentary on BBC about it, and now I’m even more sad.

But also confused why we learn only now that the US Navy already detected an anomaly that’s matching an implosion

Re: Debris found came from missing Titan sub, says friend of passengers

#806

Post by xwdv »

jethro_tell wrote: post #783
xwdv wrote: post #721

Earlier quoted context omitted.

If the explosion was heard Sunday night wouldn’t this mean there’s a possibility the crew was stuck for some time and knew they were likely going to die?

Not a chance. The whole problem with subs is that water weighs about 8lb per gallon. So, at 4000m you're looking at something between 4500 5500 psi. Thats a small truck worth of pressure every square inch in the hull. Once you breach the structure, think crushing a tin can in the middle, things collapse pretty fast. As do bodies. If you figure your body is 2 foot by 6 foot, the pressure would be like parking 100 full…

The timeline says the sub was expected back at 3PM, but the implosion was heard at night. So in between the hours of 3PM to when the explosion was heard, I speculate the sub was somehow trapped and unable to leave the wreck site, until after finally spending all that time at depth something happened that suddenly caused an implosion.

Re: Debris found came from missing Titan sub, says friend of passengers

#807

Post by klysm »

fnord77 wrote: post #232

so let's say you're in an implosion event at 5000 ft. Do you feel it? The brain stays alive for 20 seconds after your heart stops. I would imagine your skull doesn't get crushed because fluids are only a tiny bit compressible with that much pressure I imagine your ribcage would collapse, stopping your heart immediately

Nah you cease to be biology very rapidly (order of few tens of ms).

Re: Debris found came from missing Titan sub, says friend of passengers

#808

Post by LWIRVoltage »

LanceH wrote: post #744
brendamn wrote: post #686

Earlier quoted context omitted.

> How many people died in car accidents the last few days? Car accidents (not involving anyone of note) sadly aren’t novel or newsworthy anymore. A submarine, with people potentially trapped onboard, with limited oxygen, as rescue teams race to the dive site, unfolding in real-time, isn’t exactly something that happens that often.

At the scene of the Titanic. No small feat. If two people had gotten married there, it could make the news for a while.

... that did happen. .

https://www.hindustantimes.com/trending/when-an-american-cou...

http://news.bbc.co.uk/2/hi/americas/1461368.stm

Re: Debris found came from missing Titan sub, says friend of passengers

#809

Post by s1artibartfast »

bilekas wrote: post #773
gmerc wrote: post #748

Earlier quoted context omitted.

600 refugees drowned in the mediterranean and the captain of one of the non profit rescue vessels operating in the mediterranean is facing 20 years in prison. barf.

While on principle I agree. It doesn't matter. There can be 2 problems at the same time. Whatever people focus on shouldn't be a topic. Edit: That seems far more callous than it was meant. You're right, people are forced to travel the sea almost daily, desperate people will do anything. This IS different. And hits different because it was a choice, with a real discussion about "Hey, it's really possible you can die,…

>There can be 2 problems at the same time.

>Whatever people focus on shouldn't be a topic.

On the contrary, I think what people focus on is irrelevant topic for reflection and more importantly introspection. It's important to know what Yanks your emotional chains and who is yanking them.

Looking at what drives public attention lets you know what people really care about, not what they might say they care about. You can learn some hard truth about reality by observing the actions of others.

Re: Debris found came from missing Titan sub, says friend of passengers

#810

Post by xwdv »

Sylamore wrote: post #784
xwdv wrote: post #726

Earlier quoted context omitted.

Would you wager they died faster than the time it takes for a bullet fired into a head to cause death? The water moves faster than a bullet?

This video will give you an idea of how quickly things likely imploded, and they never even got to the kind of pressures they would have experienced in that sub. https://www.youtube.com/watch?v=WD7CfnQC5HQ

It seems the bullet is likely faster, bullet moves about 2.6 feet per millisecond which is more than enough distance traveled to kill a human, but the sub takes about 29 milliseconds to implode and kill occupants.
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