Back box in the investigation of a plane crash? How does this device help with investigations?

What is a black box?

The color of the black box is not black, but orange. It is an electronic recording device made of steel or titanium, which helps investigators find the cause of a plane crash.
Black bucks are also called flight recorders. There are two types of this. Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR). Combined with both devices, it is a shoebox-sized unit.
The FDR records approximately 80 movements per second, such as wind speed, altitude, upward speed, and fuel flow. It has 25 hours of recording storage.
The CVR records cockpit sounds. Records the interaction of pilots with their vehicle traffic control. It also records switches and engine noise.

Why the need for a black box?

Equipped with radio, radar and electronic navigational tools, the buck was born in a British combat aircraft during World War II. Until that time, investigators were not involved in plane crash cases.
It was a secret electronic device kept in a non-reflective black box. It later took the shape of two orange bins to detect an accident as soon as possible. In the early days, metal strips were used as a recorder. Which later became a magnetic stripe and then solid state memory chips. Black boxes are mandatory on any commercial flight and corporate jet.
This Black Bucks is a document of the flight history of the aircraft, which is placed in the tail of the aircraft. So that it has the least impact when crashing. The CVR can record two hours of cockpit sounds.

How to get a black box?

The black box is equipped with an underwater locator beacon (ULB). If a plane sinks in the water, the beacon sends an ultrasonic pulse that can be detected by sonar and audio devices at a depth of 14,000 feet.
It runs on a beacon battery with a shelf life of 6 years. Once it starts giving the signal, it then sends a signal every second until the battery power runs out for 30 days.

Can another device work instead of a black box?

Possibilities are being explored how to send all the necessary data directly to ground-based stations in real time instead of small black boxes.
The air-to-ground system sends flight data to the ground using satellite. This will prevent the need to find a black box. Investigation time will be saved. The aircraft can also be rescued in times of crisis.
Scientists are also working on satellite and GPS
capabilities, data storage speeds and battery life. So that new innovations become faster and lighter.
The challenge is to create systems that can handle large volumes. Tracks all commercial flight activities. Especially with the help of satellite and data storage.

How long does it take for black box data to be analyzed?

Typically, data from a black box is analyzed in 10-15 days. In the meantime, they analyze the pilots' conversations with the Air Traffic Controller (ATC) before the accident.
Helps investigators understand whether the pilots knew the plane was heading toward an accident. It is also understood that he had difficulty controlling the aircraft.
Apart from this the investigating officers also look at different data recorders at the airport. It shows the point of touch down on the runway and the speed of time.