Re: OT - Minneapolis bridge collapse


"Bo Raxo" <crimenewscenter@xxxxxxxxx> wrote in message
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"Kris Baker" <kris.baker@xxxxxxxxxxxxx> wrote in message
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"Jonesiecactus" <LongAgo@xxxxxxxxxxx> wrote in message
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"Kris Baker" <kris.baker@xxxxxxxxxxxxx> wrote in message
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Aw cheazzz, how could something so basic, like dangerously cracked
pilons, be ignored????? How can that be? Things like that happen so
often
it seems. Like a missing tile causing the Challenger to explode. Wha-??

jc

The Challenger burned up because the broken tile wasn't discovered.


No, the Challenger exploded because an O-ring gasket in the booster rocket
failed. Exposure to the cold for longer than it was designed for made the
ring lose the structural integrity to contain the burning fuel in the
booster, it burned through far enough to reach additional oxygen and it
exploded.


IIRC, the engineers who designed the O-ring gasket, tried to halt the the
launch of the Challenger *because of* the cold temperatures that day, but
were over-ruled by the those higher up the chain of command & NASA, wanting
to keep 'on schedule'. The engineers *knew* the integrity of the materials
could be comprimised by the cold.


td


You could be thinking of the more recent loss of another shuttle, the
Columbia, which was just a few years ago. But you'd still be wrong: The
tile wasn't missing, it was knocked off during launch when a chunk of
insulation about the size of a briefcase fell the main fuel tank.

You were trying to demonstrate our crumbling infrastructrel; engineering
or
design oversights on extremely rare, expensive, hand-built multi-billion
dollar space vehicles isn't quite the same as not properly maintaining
uncounted bridges, tunnels, highways, and the like.


Bo Raxo








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