Sonobuoy

A sonobuoy -short for sonar-buoy- is a relatively small expendable sonar system that is dropped from military aircraft performing anti-submarine warfare. The buoys are ejected from aircraft in canisters and deploy upon water impact. An infatable surface float with a radio transmitter rises to the surface for communication with the aircraft, while hydrophone(s) sensors and stabilizing equipment descend below the surface to a depth that is variable depending on environmental conditions and the search pattern. The buoy relays acoustic information from its hydrophone(s) via radio frequency to operators onboard the aircraft.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Sonar: Sonar (sound navigation and ranging) is a technique that uses sound propagation under water to navigate or to detect other watercraft. There are two kinds of sonar, active and passive....

Buoy: A buoy is a floating device that can have various purposes, which determine whether the buoy is anchored (stationary) or allowed to drift: The word is derived from the Dutch 'boei'. In North American English it is pronounced as "Boo-ee", while in Commonwealth English, the pronunciation is virtually ...

Anti-submarine warfare: Anti-submarine warfare (ASW, or in older form A/S) is a branch of naval warfare that uses surface warships, aircraft, or other submarines to find, track and deter, damage or destroy enemy submarines....