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This definitely sucks. Submarine lost.

Stolen from barf

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@GreenGO Juan

I know how this happened.

Texas A & M University (aggies) in Bryan / College Station have a tradition of building a giant bonfire every year. One time, the wood and structure collapsed and killed 12 people and injured 27 more.

Experts were mystified because the construction was supervised by engineers. My friend Lee and I look at each other and asked, "Aggie engineers?"

(I was a EE major in 1982 at UT @ Arlington.)

So, I suspect one of the engineers on this was an aggie (or the equivalent.)

There was an aggie woman who was giving birth in a hospital. The doctor said, "Congratulations! It's a girl!"

"Great!" she said. "Is it mine?"
 
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"Machine/mill the carbon fiber into a "round" profile" ?

I'm not a mechanical engineer and I know only a very little about carbon fiber, but the last thing you'd find me doing is machining the carbon fiber of a pressure vessel that is subject to 5,000 PSI. It is my understanding that carbon fiber tears and cracks when machined, if only microscopically. But, in an area that has been mechanically compromised (via machining), it could be the start of a crack that could end up being catastrophically fatal.

I haven't seen anything since the "accident" that would lead me to believe that stockton rush was anything other than an arrogant, boneheaded numbskull. It's too bad the victims believed enough of rush's bullshit that it ultimately go them all killed.
 
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"Machine/mill the carbon fiber into a "round" profile" ?

I'm not a mechanical engineer and I know only a very little about carbon fiber, but the last thing you'd find me doing is machining the carbon fiber of a pressure vessel that is subject to 5,000 PSI. It is my understanding that carbon fiber tears and cracks when machined, if only microscopically. But, in an area that has been mechanically compromised (via machining), it could be the start of a crack that could end up being catastrophically fatal.

I haven't seen anything since the "accident" that would lead me to believe that stockton rush was anything other than an arrogant, boneheaded numbskull. It's too bad the victims believed enough of rush's bullshit that it ultimately go them all killed.
Many of the frame pieces of airplanes that are carbon fiber, frame sections, stringers, etc, I don’t know what they are all called. But they are layed out and cured, then the edges are machined to the precise shape for fitment. This machining is mostly along all the edges, not on the flat area, except mounting holes are in various locations.

when done right it doesn’t cause cracks.

But again, this isn’t cutting layers off the flat areas. Just profiling the edges.
 
Well the higher you go the more air pressure there is up there. Planes go pretty high, so I’d say it’s fairly equivalent to a the pressure a submarine feels.
Um. No.
The most air pressure is at sea level or the few areas that go below sea level. 14.7 psi for sea. Pressure in passenger planes is kept to at best 6000ft or 11.7psi. Outside air pressure at 40,000ft is 2.72psi

Pressure in water increases 1 atmosphere (14.7psi) every 33 ft. 1000ft depth is 433psi. Internet says seawolf class goes to 1600 ft which is 692psi.