Tourist mini sub missing off titanic

[Chocaholic]

Originally Posted by sc_rufctr

Apologies if this has already been posted (19 hours ago).

It’s funny (but expected)…all the experts that hit the media circus to say they knew it all along now that it’s over.

[masraum]

Originally Posted by flatbutt

At the risk of being truly macabre....yes our skin would unless it gets pierced by fragmented debris. Then...well... I do hope that it was as near to instantaneous as would avoid that pain.

Right. I'm hoping that it was effectively instantaneous. I assume it may have been seconds, but hopefully, if it was a few seconds, there was so much going on that they either didn't feel any pain or didn't realize it.

Originally Posted by Chocaholic

It’s funny (but expected)…all the experts that come to the surface to say they knew it all along now that it’s over.

Right. But then, if your neighbor, Bob, was doing something and you were sitting there thinking "this is a Darwin moment waiting to happen," it's not like there's much if anything that you can do. And saying anything may have opened you up to litigation of some sort. And just imagine the BS when it worked. My guess is that the experts have been talking to friends or others privately or in small groups, but not announced it on TV.

[Chocaholic]

Originally Posted by masraum

Right. But then, if your neighbor, Bob, was doing something and you were sitting there thinking "this is a Darwin moment waiting to happen," it's not like there's much if anything that you can do. And saying anything may have opened you up to litigation of some sort. And just imagine the BS when it worked. My guess is that the experts have been talking to friends or others privately or in small groups, but not announced it on TV.

Except that it is standard fare following every major world event. Do you remember following the 2008 mortgage crisis? We had more experts telling us they knew it was going to happen than there are fish in the sea!

[J-Mac]

Originally Posted by HobieMarty

It just astounds me that Stockton Rush was told so many times that the submersible that he was building was unsafe and he didn't listen, he was going to build it his way regardless of what anyone thought. Well, his way was obviously WRONG!!!!

Sent from my SM-N950U using Tapatalk

I have to believe that, deep down, he knew he was wrong.

[john70t]

nsfw language https://communities.win/c/ConsumeProduct/p/16bPnwIYfJ/epic-qrd-on-the-submarine/c/

Uh oh.

[The Synergizer]

Wouldn't be the first person where the more you tell them it's wrong, the more they double down in stubbornness.

[john70t]

[BK911]

Originally Posted by john70t

nsfw language https://communities.win/c/ConsumeProduct/p/16bPnwIYfJ/epic-qrd-on-the-submarine/c/

Uh oh.

Through bolts on anything critical. Rookies.

[Chocaholic]

That doesn’t look like CF. I’m sure there’s an inner wall specifically for mounting equipment.

Rookies, indeed.

[unclebilly]

^^^ in an earlier picture I posted that inner liner is all dented up. Clearly not the hull.

I still think that if there was any type of explosion, it was due to a pressure imbalance wherein the inside of the hull had more pressure than the outside as the sub ascended after the ballast was jettisoned.

Those poorly glued lap joints holding the ends in couldn’t take much internal pressure (maybe 100psi). It would not take much.

[speeder]

Originally Posted by MMiller

How do people with unlimited funds (billionaires) opt for a budget trip/vessel to go to the Titanic wreckage? I would have spent any amount necessary to increase my odds of survival if it was something I really wanted to do..

Is Oceangate the only option available to someone with those financial means?

I’m going to go out on a limb and say that Oceangate is no longer one of their options.

[flatbutt]

Originally Posted by speeder

I’m going to go out on a limb and say that Oceangate is no longer one of their options.

I wonder if there is any foundation for any lawsuits. IDK the wording of the waivers but do those cover negligence? Incompetence?

[Mahler9th]

As I suspected, one of my good friends got to meet Mr. Rush at least once in the past few years, and one of his friends/biz associates was much more than a casual acquaintance (that gentleman is a well-known expert on space and ocean science and has an engineering education from an awesome school-- we'll leave it at that).

If I recall correctly...

The CF tube/Ti pressure capsule concept was at least in part chosen because a larger space for more people could be possible at a weight that is more "enabling."

The composite concept was attempted previously: https://en.wikipedia.org/wiki/DeepFlight_Challenger

See also:

https://en.wikipedia.org/wiki/Hawkes_Ocean_Technologies

https://en.wikipedia.org/wiki/Steve_Fossett

https://www.theverge.com/2014/12/13/7387153/virgin-oceanic-plan-to-explore-ocean-depths-scrapped


The Titan CF tube/Ti pressure capsule was tested at Woods Hole and passed at least at some point. Perhaps more than once.

I suspect that computer modeling was done, material scientists and a variety of outside engineers were involved, and if I recall correctly both NASA and Boeing may have been involved at least at some point.

The company has been around since ~2009, and has apparently built more than one submersible (you can see at least one such vessel which I think they named Cyclops in some of the video coverage).

Apparently the Titan vessel that was lost has made about 4 dozen various dives at various depths, and perhaps we will learn more about its history of testing, et cetera.

Apparently one hull exhibited signs of eminent failure in a test at some depth. It was taken out of service and examined and learnings were applied to the next one.

Based on what I have stitched together from public reports, in my opinion it is not appropriate for the Titan vessel to be labeled a high school science project, or a DIY project.

Ocean tourism in submersibles is apparently an "activity of the future." For example folks might want to take a look at the Triton web site. Cameron is apparently a partner in that venture. They have a wide range of subs and might be considered a competitor of sorts to the company run by the departed Mr. Rush.

I hope that more will be learned about what happened for the benefit of family and friends of those lost, and folks working in the field of ocean exploration.

[sc_rufctr]

Originally Posted by Chocaholic

It’s funny (but expected)…all the experts that hit the media circus to say they knew it all along now that it’s over.

This whole event "glows".

[speeder]

Originally Posted by Rawknees'Turbo

Adhesive for the end cap rings applied by hand with bondo spreaders, and apparently not done in a vacuum chamber and with the assembly spinning in order to evenly distribute the adhesive and lesson air bubbles in it (and with glue being the only fastener used? Wow!)- nutz, considering the intended use of that thing.

Unlike a lot of you guys, I have zero training as an engineer but wouldn’t massive external pressure at depth make it impossible for an end cap to come off? Unless of course there is an implosion of the hull, in which case it’s a moot point. If the hull maintains its shape, it ain’t coming off.

So here is a really dumb question; why is there so much pressure as you go deeper in the ocean? Is it just the weight of all the water above you? At what depth does marine life cease to be present? Lastly, would humans just be obliterated at that depth/pressure? So there were never any intact human remains on the Titanic?

[dad911]

I'm surprised the vessel was wound as a cylinder instead of a sphere. Also a bulkhead in the middle of the length would have done alot for strength even if it had a large hole in the center. I suspect the center of the tube crushed, popping off the ends.

But hey, I was an EE not a ME, what do I know?

[Captain Ahab Jr]

[Superman]

Originally Posted by speeder

So here is a really dumb question; why is there so much pressure as you go deeper in the ocean? Is it just the weight of all the water above you? At what depth does marine life cease to be present? Lastly, would humans just be obliterated at that depth/pressure? So there were never any intact human remains on the Titanic?

For the time being, I will remain an expert in deep water submersible engineering.

Denis, that is actually five questions.

1). See below.
2) Yes.
3) Marine life has been found at the bottom of the deepest ocean trench, several miles down, under unfathomable pressures.
4) Yes but....
5) Dead bodies would not necessarily explode. Simply crushed, they would be.

In the case of this submersible, implosion likely happened in the blink of an eye and all occupants would have lost consciousness just that fast.

[Mahler9th]

LOL Captain Ahab!

Perhaps of interest:

https://www.wired.com/story/crash-science-romaine-grosjean/

https://rachellancewrites.com/

She has had a few things to say about salt water, various materials and eddy currents with respect to the Titan tragedy.

I would not be surprised to learn that she knew one of my former engineering mentors who left Dartmouth for Duke moons ago and has since passed away.

If so, more "the world is small."

It appears that she has several areas of interest.

[berettafan]

Originally Posted by Captain Ahab Jr

It's funny when i see public discussions on subjects i truly know about (tax for example) i am astonished at the level of ignorance (true meaning of the word) i see on display. I would imagine structural engineers are feeling the same about now.