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[–] 19 points 4 months ago (4 children)

I think that part kinda makes sense. The lid is domed, which increases its strength. The seam where the lid meets the walls would tend to be the weakest point. I'm more surprised there was such a violent explosion in the first place, usually they just burn. Could be that tank was partially empty and the area beneath the lid was a highly combustible fuel/air mix. Drone hits the tank, vapour ignites, and pop.

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  • [–] 11 points 4 months ago (1 child)

    Domes are great in one direction, because any given section has something below it. They’re a 3D arch, something whoch would fall apart immediately if turned upside down. The great part about big rounded edges is that they distribute pressure more evenly and reduce the amount of seams present unlike a welded cube, for example.

    More likely is that, yes, the connection between the roof and the rest was the weaker point and also the dome was able to basically be a parachute so it coukd catch air instead of just being flung in some random direction.

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  • [–] 5 points 4 months ago (1 child)

    IIRC, the lid can move up and down depending on how much content there's in the tank. Something something provides pressure if it's a gas.

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