Titanic tourist sub missing

MRC_Hans said:
Well, I don't know how the Titan worked, but I know a bit about older types of deep-sea vessels.

Carbon fibre is at least partially conductive, so I doubt Bluetooth (which works in the microwave band) can penetrate it very well, if at all. It certainly can't penetrate metal, not even tin foil.

Lower wavelengths could probably go through the CF hull, such as the ones used in NFC.

In traditional bathyscaphes, where the hull is a metal sphere, all functions going through the hull, i.e. windows, hatches, wires, are essentially made in the same way: Cones. A suitable conical hole is made in the hull, and a conical glass pane (VERY thick), or hatch, or insulator with a centre wire, is fitted into the hole. There are of course seals or gaskets and retaining rings or opening mechanisms as appropriate, but what keeps the opening shut and water-tight is the pressure from outside. Thus, the pressure on, say, a window is transferred to the surrounding hull through the conical shape and balances the forces from the hull. So, if made right (there will be a bit of engineering to figure out the exact slope of the cone), the holes will not weaken the hull significantly.

Presumably, the window of the Titan was made in this way. This also explains why it was not present when the wreckage was recovered: It was simply blown outwards by the explosive phase of the implosion. ... And being made of acrylic, it was probably shattered.

Come to think of it: While the CF cylinder would be more or less conductive, it would probably be possible to apply a voltage between the end domes and thus have a way to pass a signal to the outside equipment. It would be a single channel, but you could probably pass an USB channel through that way. It would have a very low impedance, but that is only a question of a proper driver.

Hans
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Thank you! :thumbsup:

This makes things somewhat clearer for me.
And yes, I had forgotten about the conductivity of Carbon fiber. Good point.
 
MRC_Hans said:
...snip.....

In traditional bathyscaphes, where the hull is a metal sphere, all functions going through the hull, i.e. windows, hatches, wires, are essentially made in the same way: Cones. A suitable conical hole is made in the hull, and a conical glass pane (VERY thick), or hatch, or insulator with a centre wire, is fitted into the hole. There are of course seals or gaskets and retaining rings or opening mechanisms as appropriate, but what keeps the opening shut and water-tight is the pressure from outside. Thus, the pressure on, say, a window is transferred to the surrounding hull through the conical shape and balances the forces from the hull. So, if made right (there will be a bit of engineering to figure out the exact slope of the cone), the holes will not weaken the hull significantly.

Presumably, the window of the Titan was made in this way. This also explains why it was not present when the wreckage was recovered: It was simply blown outwards by the explosive phase of the implosion. ... And being made of acrylic, it was probably shattered.

...snip...
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Hard to tell with the distortions caused by the acrylic but it may not have been. Had a look for a photo of the viewport and this is the best one I've found.




 
Darat said:
Hard to tell with the distortions caused by the acrylic but it may not have been. Had a look for a photo of the viewport and this is the best one I've found.

...snip...
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Picture from the recovery of the wreckage and the viewport was constructed as Hans describes:

 
The batteries will be outside as well. They were in the old crafts. Lead-acid batteries, topped up with oil to keep the water out. Why, the Trieste would even drop the batteries if the power ran out.

Hans
 
bruto said:
But it might depend on how you power the electromagnets. We need to get the power to the electromagnets. Hey, Harvey, grab that drill over there. I need to run some wires through the hull.
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Well, the motors are outside so they must have a source of power outside too
 
Here is a very detailed description of the Deep Sea Challenger systems and construction.

https://www.oceannews.com/featured-...e-expedition-part-3-of-3-deepsea-challenger-1

More and more, I get a feeling for the piece of junk Titan was.

I have looked long and hard for info on how communication takes place between the pressure vessel and the various systems of the vessel proper of Deepsea Challenger, and have not found anything conclusive.

In this image:

https://i.dailymail.co.uk/i/pix/2012/03/27/article-2121234-1249C37C000005DC-468_634x433.jpg

I suspect the thingy's on the back of the vessel provide a hard interface - cables.
 
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The hits keep on coming. In a news story filed last week, Connecticut's CT Insider, reported on a Connecticut woman named Monica Adorno who paid $105,129 for an August 2021 dive on Titan to view the Titanic. That August she rode OceanGate's support ship to the area above the Titanic. The first group made the dive but the second group -- including Adorno and scheduled to dive the following day -- were told at the last minute their dive was cancelled and the support ship was returning to port. Stockton Rush blamed bad weather.

Adorno glumly accepted her disappointment but asked for a refund. At first she said OceanGate refused, claiming Adorno was not entitled to a refund. That she'd "enjoyed an amazing 8-day adventure on a world-class commercial vessel, she attended every lecture, meal and other form of entertainment that was offered.” Adorno filed a complaint with Connecticut's Department of Consumer Protection. Rush then claimed the trip had been cancelled by what he now called “three days of stormy weather on the site.

Finally, OceanGate offered to credit half her payment towards the $250,000 cost of a ticket in 2023. But by then Adorno had decided not to go. She had learned more about Titan and decided she was probably lucky not to have made the dive. She described her experience at the dive site and weather had been no factor.

The day before [her cancelled trip], another group had made the voyage with much chaos: a delay due to uncharged batteries, a slapdash repair of the Titan vessel, a power failure on the descent and a harrowing loss of communication hours into the dive. There was no nighttime weigh-in, as was customary for the folks heading to their cabins ahead of the 4 a.m. wakeup. The weather seemed okay. And those glitches on the dive the day before hung in the salt air as warning beacons. A Titan stabilizer was fixed with zip-ties, basically. The battery problem was caused by someone tripping over an extension cord, they were told. CT Insider news link
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newyorkguy said:
The hits keep on coming. In a news story filed last week, Connecticut's CT Insider, reported on a Connecticut woman named Monica Adorno who paid $105,129 for an August 2021 dive on Titan to view the Titanic. That August she rode OceanGate's support ship to the area above the Titanic. The first group made the dive but the second group -- including Adorno and scheduled to dive the following day -- were told at the last minute their dive was cancelled and the support ship was returning to port. Stockton Rush blamed bad weather.

Adorno glumly accepted her disappointment but asked for a refund. At first she said OceanGate refused, claiming Adorno was not entitled to a refund. That she'd "enjoyed an amazing 8-day adventure on a world-class commercial vessel, she attended every lecture, meal and other form of entertainment that was offered.” Adorno filed a complaint with Connecticut's Department of Consumer Protection. Rush then claimed the trip had been cancelled by what he now called “three days of stormy weather on the site.

Finally, OceanGate offered to credit half her payment towards the $250,000 cost of a ticket in 2023. But by then Adorno had decided not to go. She had learned more about Titan and decided she was probably lucky not to have made the dive. She described her experience at the dive site and weather had been no factor.
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$105,129 is a small price to pay for a second chance at life. I'd write it off to experience.
 
newyorkguy said:
The hits keep on coming. In a news story filed last week, Connecticut's CT Insider, reported on a Connecticut woman named Monica Adorno who paid $105,129 for an August 2021 dive on Titan to view the Titanic. That August she rode OceanGate's support ship to the area above the Titanic. The first group made the dive but the second group -- including Adorno and scheduled to dive the following day -- were told at the last minute their dive was cancelled and the support ship was returning to port. Stockton Rush blamed bad weather.

Adorno glumly accepted her disappointment but asked for a refund. At first she said OceanGate refused, claiming Adorno was not entitled to a refund. That she'd "enjoyed an amazing 8-day adventure on a world-class commercial vessel, she attended every lecture, meal and other form of entertainment that was offered.” Adorno filed a complaint with Connecticut's Department of Consumer Protection. Rush then claimed the trip had been cancelled by what he now called “three days of stormy weather on the site.

Finally, OceanGate offered to credit half her payment towards the $250,000 cost of a ticket in 2023. But by then Adorno had decided not to go. She had learned more about Titan and decided she was probably lucky not to have made the dive. She described her experience at the dive site and weather had been no factor.
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Interesting business model. :rolleyes:
 
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