Comments by "Tx240" (@Texas240) on "FOX 13 Seattle" channel.

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  5.  @faded6089  - Thanks for the comment and opportunity to clarify my previous. There's another comment where someone who is an engineer explains that carbon fiber is a great material to use in aircraft because it is strong under expansion pressure, which is the condition it sees when an airplane cabin is pressurized to greater than the outside atmospheric pressure at cruising altitude. He went on to explain that carbon fiber is weak to compression forces which is what it will experience when used as a pressure hull in a submersible vessel. I did a quick search to corroborate his statements and then am passing on the word. The part about galvanic corrosion, carbon stealing electrons from aluminum, I knew about because I'd seen it happen in modified car culture where carbon fiber hoods were failing and flying off because they were installed with aluminum hood fastening pins and looked up the condition (which also affects non noble metals on boats parked in salt water, and can be an issue in aircraft that mix carbon and aluminum). I don't know how the sub was built, but when I saw an interview with ocean gate guy from a couple years ago and he mentioned needing cost efficient vehicle, substituting aluminum for titanium was the first thing that came to mind. Titanium won't interact with carbon fiber but it's more expensive. If aluminum was used in the sub, it could've caused segregation to the carbon fiber pressure hull. Combine that with what our engineer explained about the weakness of CF under compression. Even without aluminum and galvanic corrosion, each submersion and surfacing cycle causes the CF to compress and expand. That will degrade the material. Add a lighting strike that fried some of the on board electronics and that particular sub was a ticking time bomb painted in red flags. My "intelligence" is just life experience and looking into a broad range of subjects as I come across things I don't understand or that interest me and of which I want to learn more. This incident bothers me because I'm very much against "Millennial Think". That's my term for the currently pervasive concept that if a person is allowed to do something that thing must be safe (like play on a padded playground or ride a carbon fiber sub down to 375 times normal atmospheric pressure or drive a car, even).
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