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Comment by wyager | Hacker News Reader

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What electronics could survive that much sustained acceleration? 20kG stretches my sense of plausibility.

Radar sets in anti-aircraft artillery shells, laser terminal guidance in artillery shells.

The proximity fuze, one of the technological secrets which helped win WWII.

https://en.wikipedia.org/wiki/Proximity_fuze

I’d guess the parent is referring to airline flight recorders, aka the “black box”.

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