Proximity Fuze - Acoustic Sensing

Acoustic Sensing

Acoustic sensing used a microphone in a missile. The characteristic frequency of an aircraft engine is filtered and triggers the detonation. This principle was applied in British experiments with bombs, anti-aircraft missiles, and airburst shells (circa 1939). Later it was applied in German anti-aircraft missiles, which were mostly still in development when the war ended.

The British used a Rochelle salt microphone and a piezoelectric device to trigger a relay to detonate the projectile or bomb's explosive.

Naval mines can also use acoustic sensing, with modern versions able to be programmed to "listen" for the signature of a specific ship.

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Famous quotes containing the word sensing:

    Something was still there, that something that distinguishes an artist from a performer: the revealing of self. Here I be. Not for long, but here I be. In sensing her mortality, we sensed our own.
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