Here is a photo taken by a submersible of the area showing the passengers....
Posted on 06/25/2023 1:21:39 PM PDT by Steely Tom
Rather long video by Scott Manley, who normally blogs about things space related.
This is a "rant," in which he streams his thoughts and responds to questions and comments from viewers.
One interesting thing he did say that I made note of, concerning the energy released when the Titan submarine imploded.
If we assume that it made it to a depth of 8000 feet, we can estimate the amount of energy that was focused on its occupants by just turning the situation around (in a sense) and calculating the amount of energy needed to clear one cubic meter of volume of water at that depth.
That is, calculate the force on an area of one square meter. Then sweep that square meter along a line one meter long. The result is the amount of energy released if that one-cubic-meter volume collapses.
I just did that calculation using Excel. Assuming a depth of 8000 feet (2438.4 meters), I get an energy release of 24.6 mJ/m3.
The amount of energy contained in one kilogram of TNT is given (on the internet) as 4.6 mJ per kg.
This means that each cubic meter of empty space at a depth of 8000 meters releases the amount of energy in 11.7 pounds of TNT.
The Titan submersible's interior volume has been given as 5 m3, which works out to 58.7 pounds of TNT equivalent energy.
So the passengers of the Titan experienced getting into a pressure vessel along with a bomb consisting of almost 60 pounds of TNT, then setting it off.
This explains why no remains of their bodies are expected to be found.
Speaking of typos, a priest, a pastor and a rabbit walked into a bar...
Not having arranged anything ahead of time, it took several days to get suitable equipment to the site. One is a French robot and another is a Canadian one. Not many things can go that deep.
When its telemetry was lost. About 3000’.
Certainly the mothership had an ROV on standby, didn't it? In case the sub got entangled or otherwise needed help?
If it didn't that is just criminal negligence, IMO.
mJ is “milli-Joule,” or 1/000 of a Joule.
Want to check your units again?
Did you mean MJ, MegaJoule, 1,000,000 Joules?
That’s a beauty?
Anyone remember the Windecker Eagle?
That is what you do in a steam plant on a ship; feel around with brooms. Live dry steam is impossible to see.
#24 I was told that tale from a engineer back in the early 1980’s!!
“Power plant guys tell tales of plant personnel walking around with broom sticks searching for the leak. I never did find out if that is an old wives tale or true”
#28 joules have no meaning!!!
What are the WATTS!! : )
So what you’re telling me is that if I buy one of these fancy new composite airframes, I’m literally getting a disposable product with a finite/defined max life.
No more 1950s airframe with 33,000+ TT on it.
This one should be on the Math SAT.
I actually studied mechanical engineering, but only worked in that field for a half a year.
IIRC carbon fibre has a higher tensile strength than steel but has a catastrophic stress failure point - so great for say airframes with low pressure but back for deep sea. When it breaks, it does so suddenly with no warning.
But I’d like to read what mechanical engineers who actually stayed in the field and have experience have to say
Pretty much as I understand it. The only way to check carbon fiber is to cut it up and look at it which of course destroys its functionality. They find out how many cycles before cracks start showing up.
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