261–270 of 649 posts
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You will never “run out of air” at 3000 meters. That’s under 10K feet. Even pilots only have to wear oxygen for sustained flight about 12.5K feet (and that’s for cognition, not survival).
You will absolutely run out of air 3000 meters underwater , as being discussed here.
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Who’s hiring? :-D
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It's very common for recreational divers to visit ships with bodies still in them. Maybe it's morbid, but it's common and generally you don't need to be "0.1%" to do it. If this story were about some working class people who died while scuba diving around a wreck in shallow water, would you still be trying to vilify them for it?
True about recreational divers. I'm trying to explain the sentiments which user paganel originally voiced - which I suspect are kinda common. My sense is that the strong negative feeling are tied to how much of a "just too many emotional points against it" corner case this is. A famous & famously tragic shipwreck, the dangers inherent in their extreme tourism, how very few people can imagine "it coulda been someone l…
If this had been the original diving expedition to the Titanic to find the wreck for the first time, or even the followups, and people had potentially died then, I doubt we would have had this many people out in the comments about how its distasteful and they're hoping it would dissuade anyone from doing it again.
At least "I hate rich people" is a consistent view whether you agree or not. Trying to make that view more socially acceptable by adding new and inconsistent layers on top about how visiting a place people died is inherently something that makes them unsympathetic just feels weird.
Skimming the website, I assume this submersible is using electromagnetically attached drop-weights so that if anything goes wrong and power is lost, the weights drop off and the submersible floats up to the surface again? And 96 hours of life support sounds good, but unless there is another submersible nearby that can dive down, find them AND attach a line, the number of hours of life support will be irrelevant. Of c…
David Pogue went down with the same vessel last year for CBS: https://www.youtube.com/watch?v=29co_Hksk6o "I couldn't help noticing how many pieces of the sub seemed... improvised."
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I'm no expert, but I do know there's anything fundamentally flawed about polymer composites (including carbon fibre composites) in place of metals. Composite properties can be fairly accurately measured and tested, just like any other material including plate steel or aluminium. If a structural failure has occurred, it's related to a design, manufacture or maintenance issue. For example, not enough layers, or a weakn…
> Composite properties can be fairly accurately measured and tested, just like any other material including plate steel or aluminium Metals are uniform and broadly predictable. Composites vary cure to cure. We simply don’t have the deep engineering tables that let you know how a material will behave without destructive testing.
I’m by no means a structural engineer, but with bike parts — in steel or aluminum, if you get a tiny 1mm chip in the material, you can more-or-less just treat it as if the steel is 1mm thinner. With engineering tolerances it is irrelevant.
But in a carbon fiber, that 1mm chip could be totally unnoticed for months, while slowly causing an invisible hairline crack, until the entire component suddenly explodes with no warning.
Maybe someone can verify if that is possible at a larger scale, but I feel like it must be to some extent.. especially if there is an invisible manufacturing imperfection due to the higher precision required in carbon fiber
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David Pogue, who traveled to the Titanic with OceanGate last summer, has said that he was on the control ship when a previous sub was "lost for about 5 hours". Source: https://twitter.com/Pogue/status/1670835763536183297
Is there some sort of underwater "GPS" tracker they can use to track the sub?
One thing the military does/did to communicate with subs is use low-bandwidth text-only very low frequency radio, but you need colossal transmitters and there's no way the mother ship carries one. Hydrophones are also an option, and IIRC NATO even has a working sound-based modem to transmit digital signals to subs, but not sure if that has spread in the civilian market.
Skimming the website, I assume this submersible is using electromagnetically attached drop-weights so that if anything goes wrong and power is lost, the weights drop off and the submersible floats up to the surface again? And 96 hours of life support sounds good, but unless there is another submersible nearby that can dive down, find them AND attach a line, the number of hours of life support will be irrelevant. Of c…
edit: No cites, sorry.
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I found the (wireless, $30) game controller: https://www.amazon.com/Logitech-Wireless-Nano-Receiver-Contr... and this from a review: “Pretty good controller, fits in hand comfortably and is compatible with anything I throw at it in a Debian linux environment. The conductive pads are extremely low quality though as I've had to replace them 3 times in the 2 years Ive been using it. For a Logitech product I expect bette…
Good lord, at least use an Xbox controller. They are supported pretty much everywhere and are very durable. The US Navy uses them because they are durable and because new recruits are already intimately familiar with them.
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