🎥 WATCH NEXT: 🎥 Coast Guard Has OFFICIAL OceanGate Titan Sub Transcript: ua-cam.com/video/yNqp2_70hwg/v-deo.html 🎥 OceanGate Titan Sub Debris Video Shows How It Imploded: ua-cam.com/video/cFQGJKsN-Pg/v-deo.html 🎥 OceanGate Titan Sub Coast Guard Hearing SHOCKING Facts: ua-cam.com/video/i7Fseh64Lq8/v-deo.html 🎥Coast Guard Video: Titan Sub Salvaged Off Ocean Floor: ua-cam.com/video/bX04xMem3-I/v-deo.html 🎥 NTSB Titan Sub Report: Carbon Fiber Hull Defects, More: ua-cam.com/video/Z7xaePm9QhY/v-deo.html 🎥Titan Sub: Fired OceanGate Employees Show What REALLY Happened ua-cam.com/video/Wd5d5tyXKec/v-deo.html
Not only will Stockton Rush be studied in all engineering classes in the world, but he will probably be studied in a whole lot of psychology classes as well. -lol
It actually worked fine and gave plenty of advanced warning- they just didn't bother heeding the warnings, or even analyzing it or comparing it from one dive to the next.
Yeah I would also argue that the data pretty clearly showed the hull was dying. They heard a giant bang and it obviously showed a change in strain profile.
I'm I'm Tampa and Milton just came through. Power is out for everyone here. I love your Titan videos and you're helping me get through this while I wait for power to be restored. Keep the videos coming!
@@ellenkass9410 yes I'm ok, thanks. Some minor damage around ny home and a fallen power line, but the worst part right now is no power and it's so humid! Thankfully I can charge my phone and watch these videos.
Based on the scale test imploding at 6000+, he probably (mistakenly) thought they had a safety margin of almost 2x, when in reality it was barely over 1x.
I don't think it would've mattered how much warning or data he had. He saw and believed what he wanted to see and believe and ignored anything that didn't fit that view.
Agreed! He didn’t listen to the RTM system he created or even the loud crack heard at the end of dive 80 with worsening data for all subsequent dives. You would think there were audible cracks when diving during dive 81 to their last dive besides the RTM data. Truly unbelievable!
Okay, some back of the napkin math- Titan's carbon fiber hull was 66 inches in diameter and 99.6 inches long. 66 x 3.14= 207.4 inches in circumference Pressure at the depth of the Titanic is roughly 6,000 lbs per square inch So, 207.4 x 6,000 = 1,243,440 pounds of compressive load per linear inch of hull length Hull length 99.6 inches x 1,243,440 = 123,846,624 lbs of total compressive load. But we also have to add in the load added by the spherical end caps Surface area of a 66 in diameter hemisphere is 13,684.78 square inches 13,684.78 x 6,000 = 82,108,680 lbs compressive load So if we add 82,108,680 + 123,846,624 we get 205,955,304 lbs of compressive load at depth. This should give everyone an idea of the incredible stresses involved. This can be handled by Carbon fiber *if* there are no lay up defects, no voids or delamination defects. The reason it is important that the assembly be free of defects, is because as wall thickness increases, the stress gradients in the hoop and radial stress increase. Enter the snap buckling mentioned in testimony. Here is a link to a paper published in 1990 regarding snap buckling in composite structures- gkardomateas.gatech.edu/Journal_papers/23_Kardom_CompSciTech.pdf The risk is great enough, even when a perfect lamination/ fiber lay up is achieved. Having a wavy lay up defect like Titan did is actually conducive to a snap buckling moment occurring. Adding in voids and delamination defects and it becomes a ticking time bomb. Once again, there are VERY good reasons why we don't see cylindrical and carbon fiber hulls at those depths. Some rules cannot be broken.
Just FYI, those nice and neat charts that we got were built by the NTSB, Oceangate never thought to graph the data with reference to depth. Instead they were just looking at events over time.
stand out piece of info to me, if they properly presented their data they could have detected what was almost certainly some manner of structural failure.
Hey thanks for another Titan video. One long time request- please note the audio volume of sound effects in your videos. It’s very jarring when you’re talking calmly then suddenly a loud alarm plays. Thank you
Thanks again, Jeff - incisive, detailed, well-reasoned exploration. By the end of your video it crossed my mind that a great deal could be learned from the Titan disaster about materials and designs (and RTMs!) in hostile environments, with this kind of examination of the many factors.
Rush invented the submarine "tip-n-tell" sticker. It's a small square plastic sticker filled with colorful pellets. If it's smashed into a pile of dust, that means the sub imploded.
I think, as others have pointed out, the issue is that it wasn't looked at cumulatively but as a one-to-one basis. Like they didn't do the comparisons or ignored that it was getting worse. Whats worse, as you said, is that even though this is totally reactionary, it actually worked, they just ignored it.
They really should have tested two pressure hulls to failure in that lab with the system. One to determine the limit of the pressure hull when brand new. And another that would be subjected to numerous dives at 2/3rds the point of failure to gauge whether repeat dives would reduce the design’s crush depth over time.
Really makes one wonder if Rush was suffering some kind of neurological disorder, he was so adverse to listening to warnings that he even ignored his own. Feels like he would've jumped out an airplane without a parachute just to spite anyone who told him it's _kinda_ dangerous.
He had what is commonly known as delusions of grandeur. Meaning he was a 1st class A1 narcissist. So yes, he had a psychological disorder....but not a neurological disorder.
How could he even be interpreting anything. He had no baseline calibration to say what any sounds meant in terms of the vessel's integrity. It could have just said it was Leprechauns for all the evidence he had.
To be fair despite how poorly designed the Titan was.... It was "capable" of being used for very very short dives like no more then 30-100 metres but no more at all. But even then it was quite a death trap if something went wrong.
If something brittle starts making a sound on extreme compression, then I think it is too late, at least steel is more malleable, ok it would be heavier, cost more to transport, but they would probably all be here today after their trip to the Titanic. Gaz UK
They only tested the third scale model to 108.33% of the submersible maximum dive depth whilst the industry standard is 150%. This safety margin is too small. Titan could be viewed as not having one hull but five. Each one inch hull was glued to the adjacent hulls.
Even if reinforcing the hull with steel rings would help (I doubt it), Stockton Rush will not allow it because of the added weight. He decided to use carbon fiber because it saved him weight and, most importantly, money when operating.
Yeah, like he 👆 said, carbon fiber was cheaper, and the cylindrical shape allowed more passengers and a better experience (if you lived, and if the terrifying cracking sounds didn't leave you with PTSD). Also, as I understand it, the carbon fiber was much lighter and required less foam-type-stuff to give it the right buoyancy, which allowed it to be more compact -- two factors which together meant Oceangate could rent a smaller mother-ship to carry it out to sea, which, again, would reduce expenses. Of course, ironically, that last season they had to downsize the mother-ship even more, which meant they towed Titan out to sea, which meant it could have been much heavier then after all.
I watched the engineer testify and he is finished. I can see why Rush picked him. He was good to pull out when he did, but he was complicit far too long.
thank you for the clear analysis and presentation! And I appreciate it coming from an engineer! Not a very good warning system if the time between detecting the precursor event (noise or strain gauge disturbances) and the catastrophic event is measured in milliseconds...
Well when Stockton said he wants to add value to society it's probably his only truth. His legacy to us was never cut corners and be so innovative that you risk lives through guessing, EVER.
perhaps the monitor was made with the same slapdash attitude as the rest of that cowboy operation. or maybe it worked perfectly and announced 'hull will implode in 10secs'. which is a great consolation when you're 4km down...
Jeff-with what I know about the psychology of people like him, it’s fairly likely even if the warning system went off, Stockton wouldn’t believe it and keep going.
Someone made a comment about the voids that might of had high pressure water get in, mixed with the craft being left outside in sub zero temperature 🌡️, water expansion,
Although far from identical, the carbon fiber versus titanium, reminds me of a Corvette body versus a metal body. On a fender bender the fiberglass doesn't bend, it fractures and breaks on an impact where on a steel fender, it will just push it in some.
While I'm not a licensed engineer I was understanding fibers are strong in tension not compression like the guy who was asking why he was pulling a chain around town and he asks have you tried to push a chain? Also I don't know the numbers of material shrinkage under pressure but am willing to bet the numbers for composite and titanium are different. Ie two materials are moving differently sooner or later the site where they meet will fail
Risk management 101 calculations for OceanGate Titan: 1)identify inherent risk (probability x impact) = inevitable x death = SEVERE 2)identify control = acoustic and strain monitoring 3)identify residual risk after applying controls (probability x impact) = likely x death = SEVERE 4)determine if residual risk exceeds risk appetite = Naaaahhh, It'll be fine... 5)assess control design effectiveness regularly = Probably NEVER DONE 6)assess control operating effectiveness ongoing = Clearly NEVER DONE if several monitors clearly never worked!!!
The reason the sub was not spherical Carbon Fibre is that 1) they wanted to have space for 5. 2) They tried spherical carbon endcaps in early testing which failed under pressure.
it imploded like a can of Pillsbury biscuits. simple as that. the design was wrong, the materials were wrong, the maintenance was wrong. this was basically a con so Stockton could make a name for himself by using a material no other manufacturer uses. but that's for good reason, Stockton knew carbon fiber wasn't actually the best, yet he ignored regulations and basic engineering principles and professional standards for personal gain. he wanted to be known like Elon Musk as an investor and innovator and that was more important than safety in every single way.
SpaceX 3d print the most powerful rocket engines in the world which hold up to immense forces and temperatures. This dude makes his own coffin out of the same stuff my phone case is made of, then sells tickets for a ride in his suicide tube.
The issue with a reactive acoustic monitoring system in the Titan is obvious. When failure to death is measured in microseconds, nobody onboard would have been reacting to anything as humans reactivity is measured in tens of milliseconds. The first they would be aware of the implosion is when they arrived at the pearly gates or in Stockton's case a firey pit.
The three sensors that never recorded data were at the forward part of the "sub". My very uneducated guess is that since the implosion appears to have started at this point, had these sensors been operational, it might have prevented this tragedy.
Rush knew, he just didn’t care. He ignored the damage that was clearly happening over time. The idiot light was on for dive after dive. Hell, the hull even SCREAMED at him just like he said it would before it failed. He kept diving anyway. He is a murderer in my eyes.
making it spherical would only delay the problem, laminated materials will fail when you repeatedely compress them. Making them more thick or better shaped will only buy you time before a failure. This is why composite materials are not used on theese scenarios anywhere in the industry.
You have to take account that he was charging like millions of dollars for admission. How much does money play a roll, I mean he didn't even have enough money to manufacture multiple hulls.
Since all the 'heavy' noises happened after the dive it cannot be related to the pressure. There was none. But the vessel was in contact with the platform. So it is hard to say whether the platform and contact to it or external sources were the reason for it. It would have needed a test to determine where the source of those noises was. So monitoring when it was on the platform would have be the way to go. And seeing how long those noises were sustained. Until you have a proper explanation of the noises and what caused them. I think Stockton simply thought along these lines: No pressure so it must be something else. I would have wanted to know whether the noises were from expansion under atmospheric conditions. Or from the air getting into contact with the hull. Or whatever.
Russian deep dive sub Losharik able to reach 3000-6000m depth is made of a number of spherical parts, not a one long cylinder. Probably the engineers knew something.
The RTM did the job. It seems that the data wasn't analyzed to look for progressive failure over numerous dives or they would have seen the anomalies and retired the sub. This is just one of the many issues that was bound to happen. I am a pilot too, I agree with the the experimental aircraft quote. Stockton was careless.
I feel like they were using the data to maximize how many trips they could make before needing to build a new titan sub, these delusional people at ocean gate probably had projected a much larger number of dives, and when their data started to say otherwise, they probably said something like "oh that's a small curve we can continue monitoring it for a deviation of X and right now its only a small deviation from norm so we probably still have 20 dives left" something absolutely absurdly dumb like that is what I picture Stockon saying... the company needed to raise as much money as possible in order to build a new model right? So it makes sense such a big gambling man would also gamble on how many dives oceangate sub could do without imploding. The guy just loved to gamble, perhaps addicted to it.
The difference in the compression ratios of the titanium and the CF is most likely the cause of the failure. It also would explain the complete and clean shearing of the lip on the dome mounting ring. Were there any materials engineers involved in the design of this disastrous cobbled together mess?
I'm confused about how anyone could think that carbon fiber could protect against a compression, instead of a tensile strain. That would be like compressing a rope vs climbing a rope. Wouldn't the vessel be as strong as the glue that's holding it together?
Submarines have ribs or rings inside the hull or tube to strengthen them - the idea of the cylinder being 10 inches thick sounded a lot better also saying it was certified and proven to be safe at those depths - I worked in the offshore oilfields for yrs - when divers lost air pressure at 300 ft there body's were often smashed into there helmet and there wetsuit was pretty much flattened - That's what water does also at time if a brake line brake was at the surface and a check valve failed at the helmet - blood shot out the hose at high pressure as the diver compresses - There were many divers accidents up till the 1970s -
the data was there, but who was the arbiter of the data? Was there a board of stakeholders making a decision based on the data? Honestly Stockton is lucky he went down otherwise he'd be in prison. They should throw all the upper management along with Spencer composites in prison.
🎥 WATCH NEXT:
🎥 Coast Guard Has OFFICIAL OceanGate Titan Sub Transcript: ua-cam.com/video/yNqp2_70hwg/v-deo.html
🎥 OceanGate Titan Sub Debris Video Shows How It Imploded: ua-cam.com/video/cFQGJKsN-Pg/v-deo.html
🎥 OceanGate Titan Sub Coast Guard Hearing SHOCKING Facts: ua-cam.com/video/i7Fseh64Lq8/v-deo.html
🎥Coast Guard Video: Titan Sub Salvaged Off Ocean Floor: ua-cam.com/video/bX04xMem3-I/v-deo.html
🎥 NTSB Titan Sub Report: Carbon Fiber Hull Defects, More: ua-cam.com/video/Z7xaePm9QhY/v-deo.html
🎥Titan Sub: Fired OceanGate Employees Show What REALLY Happened ua-cam.com/video/Wd5d5tyXKec/v-deo.html
Not only will Stockton Rush be studied in all engineering classes in the world, but he will probably be studied in a whole lot of psychology classes as well. -lol
"You are remembered for the rules you break."
@@Gutbomber ''Well guess what ? I did''
And ethics classes.
Too bad they won’t be able to analyze his brain. That would have been better.
@@PetesGuideI was just thinking they’d store his brain in a jar if there was anything left of it.
This system is comparable to an airbag giving you notice an accident is about to happen.
It actually worked fine and gave plenty of advanced warning- they just didn't bother heeding the warnings, or even analyzing it or comparing it from one dive to the next.
It like a few drives before the accident your airbag beeps
Yeah I would also argue that the data pretty clearly showed the hull was dying. They heard a giant bang and it obviously showed a change in strain profile.
Well an airbag goes off when what could go wrong goes wrong.
Yeah, a real time monitoring system is useless when you need ahead of time warning.
I'm I'm Tampa and Milton just came through. Power is out for everyone here. I love your Titan videos and you're helping me get through this while I wait for power to be restored. Keep the videos coming!
Hope you are ok.🌺
@@ellenkass9410 yes I'm ok, thanks. Some minor damage around ny home and a fallen power line, but the worst part right now is no power and it's so humid! Thankfully I can charge my phone and watch these videos.
@@JGD185 You don't have a generator?
@@ANGAHMONTOYA nope, but I'll definitely be getting one after this!
I'm from Europe, what is happening there? I hope it's not flooding. be safe.
That system recorded the defects per dive, not the overall damage. They really should have added them up
Like "Congrats on the powerpoint, Skipper. Now do something with all that info."
Yeah, an RTM system that alerts you to a potential implosion condition that takes at least 2 hours to escape .. yup, grand logic right there
The irony here is the data was giving warning they just choose to ignore them
Based on the scale test imploding at 6000+, he probably (mistakenly) thought they had a safety margin of almost 2x, when in reality it was barely over 1x.
I don't think it would've mattered how much warning or data he had. He saw and believed what he wanted to see and believe and ignored anything that didn't fit that view.
Agreed
Kinda like his qualifications to the people that hired him.
Wow! The fact that his warning system was giving him clues that he ignored it is so mind-boggling and unbelievable.
They were probably looking at them dive to dive, so previous data was likely ignored or not to hand
Agreed! He didn’t listen to the RTM system he created or even the loud crack heard at the end of dive 80 with worsening data for all subsequent dives. You would think there were audible cracks when diving during dive 81 to their last dive besides the RTM data. Truly unbelievable!
Okay, some back of the napkin math-
Titan's carbon fiber hull was 66 inches in diameter and 99.6 inches long.
66 x 3.14= 207.4 inches in circumference
Pressure at the depth of the Titanic is roughly 6,000 lbs per square inch
So, 207.4 x 6,000 = 1,243,440 pounds of compressive load per linear inch of hull length
Hull length 99.6 inches x 1,243,440 = 123,846,624 lbs of total compressive load.
But we also have to add in the load added by the spherical end caps
Surface area of a 66 in diameter hemisphere is 13,684.78 square inches
13,684.78 x 6,000 = 82,108,680 lbs compressive load
So if we add 82,108,680 + 123,846,624 we get 205,955,304 lbs of compressive load at depth.
This should give everyone an idea of the incredible stresses involved.
This can be handled by Carbon fiber *if* there are no lay up defects, no voids or delamination defects.
The reason it is important that the assembly be free of defects, is because as wall thickness increases,
the stress gradients in the hoop and radial stress increase. Enter the snap buckling mentioned in testimony.
Here is a link to a paper published in 1990 regarding snap buckling in composite structures-
gkardomateas.gatech.edu/Journal_papers/23_Kardom_CompSciTech.pdf
The risk is great enough, even when a perfect lamination/ fiber lay up is achieved. Having a wavy lay up
defect like Titan did is actually conducive to a snap buckling moment occurring. Adding in voids and delamination defects and it becomes a ticking time bomb.
Once again, there are VERY good reasons why we don't see cylindrical and carbon fiber hulls at those depths.
Some rules cannot be broken.
Just FYI, those nice and neat charts that we got were built by the NTSB, Oceangate never thought to graph the data with reference to depth. Instead they were just looking at events over time.
stand out piece of info to me, if they properly presented their data they could have detected what was almost certainly some manner of structural failure.
Hey thanks for another Titan video. One long time request- please note the audio volume of sound effects in your videos. It’s very jarring when you’re talking calmly then suddenly a loud alarm plays. Thank you
I'm completely addicted to these videos
Thanks again, Jeff - incisive, detailed, well-reasoned exploration. By the end of your video it crossed my mind that a great deal could be learned from the Titan disaster about materials and designs (and RTMs!) in hostile environments, with this kind of examination of the many factors.
He thought, the failure would “look the same” for a different vehicle.
That’s wild.
I was checking your channel this morning for an update, and I just needed to be a little more patient. Thank you for being my #1 go-to!!
Rush invented the submarine "tip-n-tell" sticker. It's a small square plastic sticker filled with colorful pellets. If it's smashed into a pile of dust, that means the sub imploded.
The how, and the why, for every hole in this collossal swiss cheese, can be encapsulated into just two words:
*Stockton.*
*Rush.*
I think, as others have pointed out, the issue is that it wasn't looked at cumulatively but as a one-to-one basis. Like they didn't do the comparisons or ignored that it was getting worse.
Whats worse, as you said, is that even though this is totally reactionary, it actually worked, they just ignored it.
They really should have tested two pressure hulls to failure in that lab with the system. One to determine the limit of the pressure hull when brand new. And another that would be subjected to numerous dives at 2/3rds the point of failure to gauge whether repeat dives would reduce the design’s crush depth over time.
Thanks for posting these videos. Been fascinated by this event since it happened last year. I’ve learned so much just following you and others videos.
Three more data point sets would have just been three more data point sets ignored by the supreme god of innovative mushification.
I find these videos interesting, Thanks Jeff
Thank you for your in depth no bs content. Just thanks!
Really makes one wonder if Rush was suffering some kind of neurological disorder, he was so adverse to listening to warnings that he even ignored his own. Feels like he would've jumped out an airplane without a parachute just to spite anyone who told him it's _kinda_ dangerous.
He had what is commonly known as delusions of grandeur. Meaning he was a 1st class A1 narcissist. So yes, he had a psychological disorder....but not a neurological disorder.
Dunning-Kruger effect?
How could he even be interpreting anything. He had no baseline calibration to say what any sounds meant in terms of the vessel's integrity. It could have just said it was Leprechauns for all the evidence he had.
There are baseline information for acoustic emission from laminates, but most of them are for laminates in tension rather than compression.
The RTM System did work and warn them, but they failed to look at the warning signs.
They didn't misinterpret the data. They didn't care period
I don’t think they misinterpreted it, I think they knew exactly what was going on but still chose to ignore it
Great Titan submersible content Jeff. Thanks
Let’s make a 10 inch hull and try it lol!! Love this channel!
To be fair despite how poorly designed the Titan was.... It was "capable" of being used for very very short dives like no more then 30-100 metres but no more at all. But even then it was quite a death trap if something went wrong.
If something brittle starts making a sound on extreme compression, then I think it is too late, at least steel is more malleable, ok it would be heavier, cost more to transport, but they would probably all be here today after their trip to the Titanic.
Gaz UK
I plan to license Dr. Rush's sensor patent from his estate. I'll be so rich!
The 1/3 model imploded at 6500 psi which the narrator described to be equivalent to 15kft depth or 4572 m.
They only tested the third scale model to 108.33% of the submersible maximum dive depth whilst the industry standard is 150%. This safety margin is too small.
Titan could be viewed as not having one hull but five. Each one inch hull was glued to the adjacent hulls.
Even if reinforcing the hull with steel rings would help (I doubt it), Stockton Rush will not allow it because of the added weight. He decided to use carbon fiber because it saved him weight and, most importantly, money when operating.
This is pretty insane given the knowledge of material science. ⚓
why was Stockton Rush hell bent on using a carbon fiber cylinder rather than a steel sphere ?
Money. More passengers equals more money.
Money 💰
weight to buoyancy, if you use steel you have to use expensive foam to surround it to make it more buoyant.
Yeah, like he 👆 said, carbon fiber was cheaper, and the cylindrical shape allowed more passengers and a better experience (if you lived, and if the terrifying cracking sounds didn't leave you with PTSD). Also, as I understand it, the carbon fiber was much lighter and required less foam-type-stuff to give it the right buoyancy, which allowed it to be more compact -- two factors which together meant Oceangate could rent a smaller mother-ship to carry it out to sea, which, again, would reduce expenses.
Of course, ironically, that last season they had to downsize the mother-ship even more, which meant they towed Titan out to sea, which meant it could have been much heavier then after all.
Like others said, money. Plus he got a great deal on expired carbon fiber that Boeing could no longer use.
Thanks Jeff, another excellent video
Thanks Jeff..
Hope every at your place survived hurricane Milton
I watched the engineer testify and he is finished. I can see why Rush picked him.
He was good to pull out when he did, but he was complicit far too long.
thank you for the clear analysis and presentation! And I appreciate it coming from an engineer! Not a very good warning system if the time between detecting the precursor event (noise or strain gauge disturbances) and the catastrophic event is measured in milliseconds...
Well when Stockton said he wants to add value to society it's probably his only truth. His legacy to us was never cut corners and be so innovative that you risk lives through guessing, EVER.
good stuff thanks
perhaps the monitor was made with the same slapdash attitude as the rest of that cowboy operation.
or maybe it worked perfectly and announced 'hull will implode in 10secs'. which is a great consolation when you're 4km down...
Jeff-with what I know about the psychology of people like him, it’s fairly likely even if the warning system went off, Stockton wouldn’t believe it and keep going.
Tensile strength is not the same as maintaining structural integrity under compression.
Did they really only use 4 bolts to hold the door closed for a titanic dive? I can't stop thinking about that... 23:13
Someone made a comment about the voids that might of had high pressure water get in, mixed with the craft being left outside in sub zero temperature 🌡️, water expansion,
Did not know that part 😮.
Although far from identical, the carbon fiber versus titanium, reminds me of a Corvette body versus a metal body. On a fender bender the fiberglass doesn't bend, it fractures and breaks on an impact where on a steel fender, it will just push it in some.
Ferrari found this out in the UK when their first prototype CF car got bumped in a gas station and fell apart.
Idk how YT dishes out your DIY/Deal videos & all your disaster/conspiracy stuff at the same time, same channel. Crazy.
Of course the smaller hull was going to be more durable 😂 subtract ➖ the depths as you make it larger
Once again Stockton Rush seems like a prime case of narcesism
I have no knowledge of engineering. One look at this sub screamed "homemade" at first look. Like the kid who built a nuclear reactor in a shed.
I wonder why Stockton didn’t just consider the spherical CF design?
Bcuz he wanted to make money by taking down more than 1 passenger at a time.
While I'm not a licensed engineer I was understanding fibers are strong in tension not compression like the guy who was asking why he was pulling a chain around town and he asks have you tried to push a chain? Also I don't know the numbers of material shrinkage under pressure but am willing to bet the numbers for composite and titanium are different. Ie two materials are moving differently sooner or later the site where they meet will fail
Risk management 101 calculations for OceanGate Titan:
1)identify inherent risk (probability x impact) = inevitable x death = SEVERE
2)identify control = acoustic and strain monitoring
3)identify residual risk after applying controls (probability x impact) = likely x death = SEVERE
4)determine if residual risk exceeds risk appetite = Naaaahhh, It'll be fine...
5)assess control design effectiveness regularly = Probably NEVER DONE
6)assess control operating effectiveness ongoing = Clearly NEVER DONE if several monitors clearly never worked!!!
The reason the sub was not spherical Carbon Fibre is that 1) they wanted to have space for 5. 2) They tried spherical carbon endcaps in early testing which failed under pressure.
I would love to see the remote on the bottem .
I'll bet it still works, unlike anything else on that pos
His warning system was flawed by the fact he is now fish food.
He did not stress test the glue and that's the issue here. May be few more dives the carbon Fibre could break as repeated stress test was not done.
Firemarshal Bill would have set Rush straight!
Any word on Stockton's toupee?
RIP
Send the Triest bathyscaphe down to salvage it.
it imploded like a can of Pillsbury biscuits. simple as that. the design was wrong, the materials were wrong, the maintenance was wrong. this was basically a con so Stockton could make a name for himself by using a material no other manufacturer uses. but that's for good reason, Stockton knew carbon fiber wasn't actually the best, yet he ignored regulations and basic engineering principles and professional standards for personal gain. he wanted to be known like Elon Musk as an investor and innovator and that was more important than safety in every single way.
SpaceX 3d print the most powerful rocket engines in the world which hold up to immense forces and temperatures.
This dude makes his own coffin out of the same stuff my phone case is made of, then sells tickets for a ride in his suicide tube.
🤣🤣🤣…“phone case”.
I don't think anyone is asking how this accident could have happened. I think we're all asking how it didn't happen sooner.
So basically they embedded sensors that they couldn't service or inspect. Check.
The issue with a reactive acoustic monitoring system in the Titan is obvious. When failure to death is measured in microseconds, nobody onboard would have been reacting to anything as humans reactivity is measured in tens of milliseconds.
The first they would be aware of the implosion is when they arrived at the pearly gates or in Stockton's case a firey pit.
The three sensors that never recorded data were at the forward part of the "sub". My very uneducated guess is that since the implosion appears to have started at this point, had these sensors been operational, it might have prevented this tragedy.
Rush knew, he just didn’t care.
He ignored the damage that was clearly happening over time. The idiot light was on for dive after dive. Hell, the hull even SCREAMED at him just like he said it would before it failed. He kept diving anyway. He is a murderer in my eyes.
Why didn't stockon pay someone to make a sub for him?
He thought he could do it better and cheaper.
making it spherical would only delay the problem, laminated materials will fail when you repeatedely compress them. Making them more thick or better shaped will only buy you time before a failure. This is why composite materials are not used on theese scenarios anywhere in the industry.
You have to take account that he was charging like millions of dollars for admission. How much does money play a roll, I mean he didn't even have enough money to manufacture multiple hulls.
The support rings that you mentioned would have not helped at all. Once that carbon fiber hull fails, nothing can stop it.
It can reduce compression and delay failure
People who jump out of planes also have on a BACK UP to the parachute.
your mic is HOT, back that gain off
No we don’t check our parachutes because it’s prepackaged by a rigger. You’re wrong on that one.
What a stupid idea, even if it worked to perfection it’s doesn’t matter, you’re too deep to do anything about it, you’re still dead
Wouldnt the debris field suggest that they were heading up? They definitely couldn't have been stagnant with how far apart all the pieces are.
Since all the 'heavy' noises happened after the dive it cannot be related to the pressure. There was none. But the vessel was in contact with the platform. So it is hard to say whether the platform and contact to it or external sources were the reason for it. It would have needed a test to determine where the source of those noises was. So monitoring when it was on the platform would have be the way to go. And seeing how long those noises were sustained. Until you have a proper explanation of the noises and what caused them.
I think Stockton simply thought along these lines: No pressure so it must be something else.
I would have wanted to know whether the noises were from expansion under atmospheric conditions. Or from the air getting into contact with the hull. Or whatever.
If the cylinder was made of titanium? Would that have stopped the implosion?
That other father & son changed their stories and milked the attention as much as possible lol
People love telling “I almost died” stories.
I want to know how secure/air tight were the fittings/ holes that allowed the wiring to come in and out of the sub ?
Proactive not reactive ! Doesn't matter what you are doing in life...especially 4,000 meters down !!
My question is if the test hull was one third the size and failed at 6000 then shouldn't the full size hull be weaker by a factor of three (3)?
His first name was Richard? That explains a lot.
Russian deep dive sub Losharik able to reach 3000-6000m depth is made of a number of spherical parts, not a one long cylinder. Probably the engineers knew something.
If there was a version 1 hull, I'd hate to see it.
The RTM did the job. It seems that the data wasn't analyzed to look for progressive failure over numerous dives or they would have seen the anomalies and retired the sub. This is just one of the many issues that was bound to happen. I am a pilot too, I agree with the the experimental aircraft quote. Stockton was careless.
I feel like they were using the data to maximize how many trips they could make before needing to build a new titan sub, these delusional people at ocean gate probably had projected a much larger number of dives, and when their data started to say otherwise, they probably said something like "oh that's a small curve we can continue monitoring it for a deviation of X and right now its only a small deviation from norm so we probably still have 20 dives left" something absolutely absurdly dumb like that is what I picture Stockon saying... the company needed to raise as much money as possible in order to build a new model right? So it makes sense such a big gambling man would also gamble on how many dives oceangate sub could do without imploding. The guy just loved to gamble, perhaps addicted to it.
The difference in the compression ratios of the titanium and the CF is most likely the cause of the failure. It also would explain the complete and clean shearing of the lip on the dome mounting ring. Were there any materials engineers involved in the design of this disastrous cobbled together mess?
Yes,Stockton only wanted them to sign it off as OK. He didn't seem to want any changes
When your beliefs are faulty, you will never come to the right conclusion. Our ego won't let us see the truth.
I'm confused about how anyone could think that carbon fiber could protect against a compression, instead of a tensile strain. That would be like compressing a rope vs climbing a rope. Wouldn't the vessel be as strong as the glue that's holding it together?
Did they actually use Chinesium strain gauges as depicted in your video? They are not the type I would have gone with.
Submarines have ribs or rings inside the hull or tube to strengthen them - the idea of the cylinder being 10 inches thick sounded a lot better also saying it was certified and proven to be safe at those depths -
I worked in the offshore oilfields for yrs - when divers lost air pressure at 300 ft there body's were often smashed into there helmet and there wetsuit was pretty much flattened -
That's what water does also at time if a brake line brake was at the surface and a check valve failed at the helmet - blood shot out the hose at high pressure as the diver compresses -
There were many divers accidents up till the 1970s -
the data was there, but who was the arbiter of the data? Was there a board of stakeholders making a decision based on the data? Honestly Stockton is lucky he went down otherwise he'd be in prison. They should throw all the upper management along with Spencer composites in prison.
Did Stockton ever take his family down there in his experimental sub?
The only way to have more hubris is if they nicknamed the RTM "Cassandra"....
Anyone else on free UA-cam notice this video background plays?