SWComposites
Aerospace
Reverse_Bias - where did you see it was 5 layers?
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Thought all those DEW line radars were replaced by satellite IR launch detection platforms.
That doesn't square with the submersible being unable to find the Titanic when comms with the mother ship were lost, as described on some previous expeditions.As long as that was properly initialised at the start of the dive, that could be quite accurate over the expected 8 to 12 hours of each dive.
“I couldn’t think of any other scenario in which a sub would be lost where it lost comms and navigation at the same time, and stayed out of touch, and did not surface,” Cameron said. “I was also told, and I don’t have confirmation on this, that they were on descent, they were a couple hundred meters above the sea floor and they dropped their weights. Now, the only way for the ship to know that they had dropped their ascent weights – which would be an emergency abort – is if they had called that in.”
Asked about the carbon composite used in Titan’s experimental design, Cameron said, “It’s completely inappropriate for a vessel that sees external pressure.” He went on to say that carbon fiber is very helpful when used for applications subject to internal pressure, like scuba tanks. But, he said, “for something that’s seeing external pressure, all of the advantages of composite material go away and all the disadvantages come into play.”
He stressed that there was nothing controversial about that evaluation.
“These were known things. They were known to the engineering community.”