After a Gatwick-bound Air India plane(AI171) crash, the search for the flight's black box continues, which is crucial equipment to find out what happened moments before the disaster.
About Black box:
It is a small machine that records information about an aircraft during its flight.
This bright orange or yellow rectangular box is crafted to withstand explosions, fire, water pressure, and high-speed crashes.
It was discovered by Australian scientist David Warren, it is used to discover the cause of a plane crash.
Most aircraft are required to be equipped with two black boxes — the cockpit voice recorder (CVR) and the flight data recorder (FDR) — that record the information about a flight and help reconstruct the events leading to an aircraft accident.
The CVR records radio transmissions and other sounds in the cockpit, such as conversations between the pilots and engine noises.
The flight data recorder records more than 80 different types of information, such as altitude, airspeed, flight heading, vertical acceleration, pitch, roll, autopilot status, etc.
The recording devices are stored inside a unit that is generally made out of strong substances such as steel or titanium and are also insulated from factors such as extreme heat, cold or wetness.
To protect these black boxes, they are equipped towards the tail end of the aircraft, where the impact of a crash is usually the least.
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