The black box is one of the recording devices on the aircraft and has strong impact resistance. What is a black box on an airplane? Why won't it break if it falls from such a height? The black box is one of the electronic recording devices dedicated to aircraft. Its real name is Aviation Flight Recorder. It is equipped with flight data recorders and cabin recorders, and all mechanical parts and electronic instruments of the aircraft are equipped with sensors connected to them, just like the nerves in various parts of the human body communicate with the brain. It can record relevant technical parameters and sounds in the cockpit half an hour before the aircraft stops working or crashes, and releases the recorded parameters again when flight experiments and accident analysis are required. The black box has strong fire resistance, pressure resistance and impact resistance. The causes of all air crashes in the world are found through the black box, so it becomes a witness to the accident and prevents the same accident from happening. The black box is not black, but usually orange-red, mainly for eye-catching color and easy to find. It has a rectangular shape and a solid shell, about the size of four or five bricks stacked together. The material of the black box is very special

In order to withstand the violent impact and high-temperature flames when the plane crashes, the outer shell of the black box design has a thick steel plate and multiple layers of heat insulation and anti-collision materials. And in order to be as safe as possible, the black box is usually installed in the safest part of the tail of the aircraft, which is the part with the least damage in the event of a crash. In the event of a plane crash, the black box can withstand 30 minutes of roasting in a flame at 1,100°C. Functions of black boxes

Currently, most aircraft black boxes use two recording media, one is magnetic tape and the other is crystal memory board. As airlines began a full shift toward electronic technology, black box manufacturers stopped making recorders. Electronic recorders use stacked memory chips. Compared with tape technology, memory is not easily damaged, but whether it is easy to repair after damage depends on the program that damaged the black box and whether important components are damaged.

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