Quote:
Originally Posted by afc wimbledon
fair enough, I still can't see anyway this wasn't sudden and unexpected
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I think you are comparing this failure to a vaccuum collapse of a tank, rail car or pop can caused by condensing Vapours. In that scenario you rapidly go from 15psia to 0psia and rapidly cross the 1PSI or so vaccuum rating of these things and the metal yields and fails relatively instantly.
In this scenario to have a composite material so you likely have delamonations which are week points that start to crack and arrest themselves at various pressures as decent is occuring. You are also only gaining about 200 kpa of pressure a minute on something designed to 35000 kpag.
You also have the strain gauges on the inner hull which as the hull becomes compromised would show increased strain.
So in general I don’t think collapse is instant, also given the reporting they had dropped ballast and were ascending when the failure occurred so they knew they were in trouble.