R.I.P. Scout26
'Chlorate Candles- Chemical generation of O2. My first boat did not have a Oxygen generator, we burned candles or used the O2 banks.'Those things produce a lot of heat, don't they?
Check Firefox's security settings for the site. (shield emblem in the address bar).If set too high it can sometimes interfere with images on this site. If on max turn off just for this site since I assume you can trust this site.
https://youtu.be/4Dj8IJbP41cIf true apparently they had text based comms with the surface. And if true they descended much too quickly, and when they got alarms weren’t able to abort effectively and ascend.
Even he says it could be fake so take with an internet size grain of salt
Hence the “if true” caveats.
This jives with what Cameron was saying and he says some of the numbers match.So eitherA) It's real and Cameron saw this and they were trying ascend.B) It's fake and someone matched it up with what Cameron was going on about.
The faster descent shouldn’t have been a huge factor in the implosion other than a slower descent might have triggered alarms at a somewhat shallower depth and might have given an opportunity to ascend before disaster. Keep in mind it still took 1:30 instead of 2:30 to get to nearly titanic depth. It’s not like they zoomed down in 5 minutes or something crazy. Structurally speaking that’s still a quasi static load on the sub, not a dynamic, rapidly increasing load.
Structurally speaking that’s still a quasi static load on the sub, not a dynamic, rapidly increasing load.
A heavier than anticipated craft would jive with the slow ascent after they dumped ballast as well.
It would seem to indicate the sub was a bit heavy, unless they were just running the vertical thrusters hard to descend.A heavier than anticipated craft would jive with the slow ascent after they dumped ballast as well.I wonder how much of the descent/ascent was programmed to be thrust and how much was planned to be their natural buoyancy.
I totally accept that with normal materials. I'm just wondering if the carbon fiber component might have been affected. I'm still unclear exactly how that was integrated into the structural design.
Do we know for certain that they jettisoned ALL the ballast? If, again, information so far is accurate, I would guess they did, since they also dropped the skids, and that would seem like "last resort" ballast to me.
A submersible “should” be slightly positively buoyant at max design depth. They should need the thrusters to descend.My best guess is the carbon hull was absorbing substantial water. Possibly from low cycle fatigue cracks from prior dives. That both compromised hull strength and ability to ascend due to the added mass. Eventually the water absorption caused delaminations or just significantly reduced the strength properties of the composite resulting in the pressure hull failing catastrophically.
The cylinder was bonded to the titanium hemispheres. Apparently somewhat sloppily. Epoxy is pretty good in compression so I’m guessing the bonding between the carbon and titanium probably wasn’t the initial failure point. And even if the bond failed before the implosion it’s likely the pressure from the water would have kept a good seal between the carbon fiber and the titanium at depth because the carbon fiber should have been under more compressive strain than the metal. Or at least that’s how’d I’d have told them to design it, if I took sufficient leave from my senses to be involved at all.
