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We all live in a yellow Submarine (or maybe not)

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Polarbear
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PostPosted: 22:48 - 24 Jun 2023    Post subject: Reply with quote

Ribenapigeon wrote:

I was think in terms of fart gas and air in the human gut. Shocked


Could 5 people shitting themselves just before the sub imploded release enough methane to do said diesel ignition? I think it could.
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grr666
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PostPosted: 23:16 - 24 Jun 2023    Post subject: Reply with quote

Obviously, the scale and suddenness of the implosion depends upon the depth reached before hull failure, but
assuming a significant depth was reached it was literally so fast they wouldn't have even registered it happening.

This video gives a good if somewhat dark explanation.
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Easy-X
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PostPosted: 00:45 - 25 Jun 2023    Post subject: Reply with quote

I apologise for my previous comment. We of course need to know how such worthy people died, it's deeply important.
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Ribenapigeon
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PostPosted: 10:13 - 25 Jun 2023    Post subject: Reply with quote

grr666 wrote:
Obviously, the scale and suddenness of the implosion depends upon the depth reached before hull failure, but
assuming a significant depth was reached it was literally so fast they wouldn't have even registered it happening.

This video gives a good if somewhat dark explanation.


That supports my splattered and dieseled theory.
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M.C
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PostPosted: 18:26 - 28 Jun 2023    Post subject: Reply with quote

They've recovered some of the wreckage: https://www.bbc.co.uk/news/world-us-canada-66045554
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Islander
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PostPosted: 20:11 - 28 Jun 2023    Post subject: Reply with quote

M.C wrote:
They've recovered some of the wreckage: https://www.bbc.co.uk/news/world-us-canada-66045554


More specifically a titanium end cap minus the view port window. You know, the bit that was only rated to 1300m that they took to 3000m a number of times...
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Ribenapigeon
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PostPosted: 15:17 - 29 Jun 2023    Post subject: Reply with quote

I wonder if there was a black box recorder on board?
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The Artist
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PostPosted: 15:30 - 29 Jun 2023    Post subject: Reply with quote

Ribenapigeon wrote:
I wonder if there was a black box recorder on board?


https://www.youtube.com/watch?v=18N2k1TBBRE
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Islander
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PostPosted: 16:18 - 29 Jun 2023    Post subject: Reply with quote

Ribenapigeon wrote:
I wonder if there was a black box recorder on board?


Nope.

Piss poor corner cutting design philosophy throughout.
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Ribenapigeon
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PostPosted: 16:39 - 29 Jun 2023    Post subject: Reply with quote

Bit odd not having any logging technology on board what is supposedly an experimental craft. Beyond being piss poor to just plain stoopid.
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jeremyr62
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PostPosted: 18:09 - 29 Jun 2023    Post subject: Reply with quote

Islander wrote:
M.C wrote:
They've recovered some of the wreckage: https://www.bbc.co.uk/news/world-us-canada-66045554


More specifically a titanium end cap minus the view port window. You know, the bit that was only rated to 1300m that they took to 3000m a number of times...


Might not be significant. The implosion would send all manner of weird forces through those parts of the hull.It will be a plug type window so a positive pressure wave could just pop it out.
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Islander
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PostPosted: 19:40 - 29 Jun 2023    Post subject: Reply with quote

jeremyr62 wrote:
Islander wrote:


More specifically a titanium end cap minus the view port window. You know, the bit that was only rated to 1300m that they took to 3000m a number of times...


Might not be significant. The implosion would send all manner of weird forces through those parts of the hull.It will be a plug type window so a positive pressure wave could just pop it out.


Indeed. But the fact that it was so grossly underrated for service at that depth may well be significant.
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MCN
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PostPosted: 22:02 - 29 Jun 2023    Post subject: Reply with quote

Someone highlighted a couple of significant points.

Directed at the design. Or failings in the design.

Fibre wrap is used for breathing air bottles. Primarily to reduce their weight.

The trade off is that steel bottles are able to be cycled (pressurised-depressurised) indefinitely, provided the pass their 5yr hydrostatic pressure test. The bottle is filled with water and pressurised to ? x the bottles maximum working pressure.

Wrapped bottle have to be scrapped after a certain number of cycles.

Also fibre wrap vessels are good at holding pressure in but remarkable s4ite at keeping pressure out.

The decision to use a composite hull rather than a steel hull will be a thing needing answers.

The vessel had already been in use for some time and several cycles.

Since the CEO mandate was that testingbwas unnecessary, it will probably be proved that testing was critical for this vessel.

Bought the interior lighting from a camping shop. FFS.
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Islander
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PostPosted: 22:07 - 29 Jun 2023    Post subject: Reply with quote

MCN wrote:
Someone highlighted a couple of significant points.

Directed at the design. Or failings in the design.

Fibre wrap is used for breathing air bottles. Primarily to reduce their weight.

The trade off is that steel bottles are able to be cycled (pressurised-depressurised) indefinitely, provided the pass their 5yr hydrostatic pressure test. The bottle is filled with water and pressurised to ? x the bottles maximum working pressure.

Wrapped bottle have to be scrapped after a certain number of cycles.

Also fibre wrap vessels are good at holding pressure in but remarkable s4ite at keeping pressure out.

The decision to use a composite hull rather than a steel hull will be a thing needing answers.

The vessel had already been in use for some time and several cycles.

Since the CEO mandate was that testingbwas unnecessary, it will probably be proved that testing was critical for this vessel.

Bought the interior lighting from a camping shop. FFS.


Although the main hull was 5 inches of carbon fibre which is pretty strong stuff in most applications, I did wonder what the likelihood of eventual delamination would be over multiple pressure cycles. Apparently they didn't even have a satisfactory testing regime for the hull.

But that porthole window was only certified for 1300m...

We'll have to wait for the investigation to conclude before anyone knows what actually happened.
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MCN
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PostPosted: 22:09 - 29 Jun 2023    Post subject: Reply with quote

The titanium end cap was.... wait for it....
Glued on using really strong glue. Shocked

There's a adventure guy was invited to dive in it but there were leaks.

A diving bell that leaks?
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Nobby the Bastard
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PostPosted: 22:25 - 29 Jun 2023    Post subject: Reply with quote

Glue is fine. Glue holds on plane wings. Glue holds f1 cars together.

What was an issue is.using untested kit for tourism.
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Polarbear
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PostPosted: 23:38 - 29 Jun 2023    Post subject: Reply with quote

Nobby the Bastard wrote:
Glue is fine. Glue holds on plane wings. Glue holds f1 cars together.

What was an issue is.using untested kit for tourism.


Yep, glue is a very simple word for some amazing products, just not what you want for an Airfix midget deep sea submarine! Laughing
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Kawasaki Jimbo
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PostPosted: 23:57 - 29 Jun 2023    Post subject: Reply with quote

Nobby the Bastard wrote:
Glue is fine. Glue holds on plane wings. Glue holds f1 cars together.

What was an issue is using untested kit for tourism.


Yep, it would appear they were effectively travelling in an early prototype more suited to unmanned stress testing. Fools. Most rich people get rich through luck rather than judgement.
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Ribenapigeon
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PostPosted: 09:31 - 30 Jun 2023    Post subject: Reply with quote

Kawasaki Jimbo wrote:


Yep, it would appear they were effectively travelling in an early prototype more suited to unmanned stress testing. Fools. Most rich people get rich through luck rather than judgement.


As any con man knows, rich people's egos are their weak point. It doesn't matter if they get rich through luck or ability the ego is along for the ride. You might be able to make incredibly astute judgements about managing a business selling toilets but that doesn't mean you have a clue about plumbing.
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MCN
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PostPosted: 10:23 - 30 Jun 2023    Post subject: Reply with quote

Nobby the Bastard wrote:
Glue is fine. Glue holds on plane wings. Glue holds f1 cars together.

What was an issue is.using untested kit for tourism.


I know glue holds parts of the wings together but glue relies a lot on the surface bonded and the area where the bond is.
If the area is too small then external forces can compromise the bond.

What I saw in the sub construction was the end cover being offered up to the end of the composite tube that had a layer of black glue slabbered over it.

The stresses on an aircraft are not nearly as much as the stress on a deep dive vehicle.
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Easy-X
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PostPosted: 11:14 - 30 Jun 2023    Post subject: Reply with quote

This is like fox hunting. Now bear with me one this one...

"Fox hunting is cruel!"

Yes.

"We should ban it!!!"

No.

"But! But! The poor fox"

Yes but how many people get thrown from horses every year and break their necks.

"I dunno, errr..."

And what sort of people are riding these horses, do you like these people?

"Rich twats... ah... I see."

We should make an experimental cardboard submersible. Charge £500,000 a ticket.
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Ribenapigeon
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PostPosted: 11:36 - 30 Jun 2023    Post subject: Reply with quote

Easy-X wrote:
This is like fox hunting. Now bear with me one this one...

"Fox hunting is cruel!"

Yes.

"We should ban it!!!"

No.

"But! But! The poor fox"

Yes but how many people get thrown from horses every year and break their necks.

"I dunno, errr..."

And what sort of people are riding these horses, do you like these people?

"Rich twats... ah... I see."

We should make an experimental cardboard submersible. Charge £500,000 a ticket.


Sorry i could not bear with you on that one.
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Easy-X
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PostPosted: 12:23 - 30 Jun 2023    Post subject: Reply with quote

Sacrifice the odd fox to top a few toffs is not a good exchange?
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stinkwheel
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PostPosted: 12:31 - 30 Jun 2023    Post subject: Reply with quote

MCN wrote:


There's a adventure guy was invited to dive in it but there were leaks.

A diving bell that leaks?


Umm, diving bells all leak, they have a huge hole in the bottom for the divers to go in and out of, they are also pressurised to a slightly higher level than the outside water so implosion isn't a thing, they can be relatively flimsy. They can't go as deep as titanic in one though and I doubt many billionaires would be prepared to spend a fortnight breathing helium in a tiny decompression chamber after they come back up.
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Raffles
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PostPosted: 12:49 - 30 Jun 2023    Post subject: Reply with quote

MCN wrote:
There's a adventure guy was invited to dive in it but there were leaks.

Are you referring to this nobber?
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