Is anyone working on the black box of the human body?

It's to look at Pipiru, right?

There is a book that says that the black box in the body is in the left ear, but it is a fairy tale book, and there is no guarantee that it will be.

In the aftermath of the plane accident, people are looking for the "black box" that was originally installed on the plane to find out the truth about the crash, so what is the black box?

Recently, air accidents have become an infectious disease all over the world, and many countries and regions have experienced the tragedy of plane crashes. While people are looking at rescuing survivors and salvaging the bodies of victims, they are also looking at a device – the black box, which tells us why the plane crashed. The black box, which is used as a "witness" to the flight condition of the aircraft, is not actually black, but often orange-red.

Because it can help decipher the secrets of flight accidents, especially the flight status of the plane at the moment of the crash and some time before the crash, it is called the "black box". The black box shell is solid and cuboidal, approximately equal to.

Four or five bricks are generally large together. Inside it is purely some electrical components, which are essentially a transceiver. During the flight of the aircraft, it can receive all kinds of information collected by the sensors in the aircraft in time, and automatically convert it into the corresponding digital signal for continuous recording; When a plane crashes, an emergency locator transmitter that relies on a black box automatically emits a radio signal with a specific frequency (e.g., 37 5 kHz), similar to a heartbeat, in all directions, to "announce" its position so that the seeker can trace the wave.

The "black box" is one of the electronic recording devices dedicated to aircraft, and its real name is Aviation Flight Recorder. It is equipped with flight data recorders and cabin sound recorders, and all mechanical parts and electronic instruments of the aircraft are connected to them by sensors, just like the nerves in various parts of the human body communicate with the brain. It can record the relevant technical parameters and the sound in the cockpit half an hour before the plane stops working or crashes, and re-releases the recorded parameters when necessary for flight experiments and accident analysis.

The black box has strong resistance to fire, pressure, shock and vibration, seawater (or kerosene) immersion, magnetic interference, etc., even if the aircraft has been completely damaged, the recorded data in the black box can be preserved intact. All the causes of air crashes in the world are found through the black box, so it has become a witness to the accident and a "lesson from the past" to avoid the same accident and take better safety measures.

Aircraft black box Although modern civil airliners adopt a large number of new technologies and take many safety precautions, accidental crashes are still difficult. Once a plane crash occurs, people always do everything possible to find a black box from which to analyze the cause of the accident. In fact, the black box.

The reason why it uses orange red is mainly to distinguish it from the color of the surrounding terrain and landforms, and to make it easy to find. It is a streamlined container made of a special solid material. The black box is an in-flight information memory, i.e. a tape recorder, which records important parameters during the flight, such as the aircraft's relative ground state, speed, altitude, heading, speed, fuel, and so on.

Following these parameters, it is easy to plot the track. The information is recorded and washed, but the hail is kept hours before the plane crash. In addition to the orange appearance, in order to make it easier to find, the black box is also equipped with a radio beacon, which can automatically and regularly transmit a certain radio signal to the outside for a special receiver to receive.

The black box housing is very robust and coated with thermal insulation. It can withstand the impact of kilogram-heavy objects from three directions for up to 5 minutes at the same time; Able to withstand the impact of a 230 kg weight falling from a height of 3 meters; Able to withstand ****, and can burn in the fire of 1100 for half an hour; It can be immersed in water at a depth of 3 meters for 30 days. In order to ensure that the black box can work properly, like all aerospace designs, it has a high degree of "self-protection" and "mutual protection" in working procedures and fault considerations.

This is like the rules and regulations for entering a bank vault, which is intended to be foolproof. For example, the power supply of the black box is very special. Under normal circumstances, the direct current required by the black box is supplied by the aircraft's power generation system.

This kind of generator is an AC/DC converter, which converts the emitted alternating current directly from the DC motor into direct current. In the event of a generator failure, it is automatically switched to battery power to provide the required voltage. Another example is that the working switch of the black box should be switched on before the aircraft starts, but even if the pilot forgets it, it does not matter.

When the aircraft taxied on the runway to a certain speed, the landing gear automatically retracted, and the working switch of the black box was automatically switched on due to the pressure of the landing gear struts. The black box that is currently under development will tend to be computerized. The electronic device is housed in a protective case, which consists of three main parts: an interface card for collecting data, a memory and a program to encode the information into memory.

It has great advantages over traditional black boxes, for example, it can change the recording speed of parameters, and when there is an abnormality, it will automatically speed up the recording speed for more accurate analysis, and in addition, it will be greatly reduced. Only the code.

In the aftermath of the plane accident, people are looking for the "black box" that was originally installed on the plane to find out the truth about the crash, so what is the black box?

The black box is a recording instrument on an aircraft, and one is a flight data recorder. It can record the aircraft's altitude, speed, heading, climb rate, descent rate, acceleration, fuel consumption, landing gear release, Greenwich Mean Time, as well as aircraft system working conditions and engine operating parameters and other flight parameters. The other is the cockpit voice recorder.

It is actually a radio call recorder that can record all kinds of calls on the plane. The four audio tracks on this instrument record the conversation between the pilot and the ground command organization, the conversation between the principal and co-pilot, the captain's and stewardess's threats to the passengers, the abnormal engine sound, and various sounds in the cockpit. The black box provides investigators with information about the operation of the aircraft's systems prior to the accident.

Because air crashes occur in a short moment, sometimes the pilot and all flight attendants are killed at the same time, it will be very difficult to investigate the cause of the accident, and the flight data recorder can provide people with the moment of the plane crash and the period before the crash, the flight status of the aircraft, the working conditions of the equipment on board, etc. The cockpit language recorder can help people analyze the cause of the accident according to the various conversations of the people on board, so as to make the correct conclusion about the accident.

Don't let it go, that's the flight parameter recording device! Something that records how well various equipment works on an airplane. You can't put anything in it!

The so-called "black box" is a flight recorder installed on an airplane. The "black box" is divided into two types according to its function: one is a flight data recorder and the other is a voice recorder.

The flight data recorder is generally installed above the rear cabin roof of the aircraft. As long as one engine is active in flight, it can keep an automatic record and can work continuously for 20 to 50 flight hours. It can record the flight status information of the aircraft, such as flight altitude, speed, heading, vertical overload, pitch, roll, deflection angle of control surfaces, lift, drag and engine power.

Generally, the "black box" on small and medium-sized passenger planes can record more than 10 kinds of flight data, and large passenger planes can generally record more than 100 kinds of flight data, and some can even reach more than 2,000 kinds of flights. The various data recorded must be decoded by a specialized agency before people can understand it.

The voice recorder is installed at the rear door of the cargo compartment at the bottom of the aircraft. It is used to record the conversation of the pilots in the cockpit and the contact between the pilot and the ground within half an hour before the aircraft stops, and even the pilot's speech without a walkie-talkie can be recorded.

Once a plane crashes, the aviation department always has to do everything possible to find the "black box" so that it can analyze the cause of the crash based on the data recorded by the "black box" and the in-flight recordings, in order to achieve the goal of "making up for the dead," preventing the recurrence of similar accidents, and clearly distinguishing responsibilities and doing a good job in dealing with the aftermath.

The so-called "black box" is not black in appearance, but usually in a striking orange color for people to find. In order to ensure the safety of the "black box", people design and manufacture it into a special structure with impact resistance, fire resistance and corrosion resistance. Even if it is burned for 30 minutes and the temperature rises to 1100, the tape inside it will not be burned; After soaking in water for 36 hours, the tape inside it will not get wet.

Once it falls into the sea, it can rely on its own battery within 30 days to make the underwater positioning signal sign send out an ultrasonic signal, so that people can easily determine its underwater position and salvage it.

In the aftermath of the plane accident, people are looking for the "black box" that was originally installed on the plane to find out the truth about the crash, so what is the black box?

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There are two kinds of black boxes: one is the flight data recorder, which records all the data of the flight, including the flight speed, direction, altitude, cabin pressure, etc. of the aircraft; The other is the cabin sound recorder, which can automatically record the crew's calls and the sound in the cockpit on tape. Calls and sound calls and sound in the first half hour of the plane stopped working or crashed were recorded on tape, and when a new sound was recorded, the old (30 minutes old) recording was automatically erased.

In the past, they mostly used 1-inch wide magnetic tape as the medium for recording analog signals, but now they are gradually using integrated circuit memory chips as the medium for recording digital signals.

Today's airplanes are equipped with these two black boxes, which can help solve the mystery of a plane crash if there are no survivors. "The flight data recorder enables the accident investigator to directly obtain or infer the following information: the trajectory of the aircraft, the attitude of the aircraft, the fundamental forces acting on the aircraft (e.g., lift, drag, thrust, etc.) and navigational data, as well as the condition of the aircraft systems; The cabin sound recorder can help accident inspectors link the activities of the crew with the working cabin of the aircraft, identify and judge the working condition of the parts through recording, and provide people with the basis for analysis and research, so as to make correct conclusions about the accident.

Generally speaking, the two recorders are installed in the tail of the aircraft, which is relatively easier to survive in an air crash, and both have an underwater signal marker, which automatically turns on after falling into the ocean at a certain depth, and emits an audio signal of a specific frequency for the seeker to determine its position using a special receiver. "One thing that needs to be mentioned in particular is that the black box we often talk about is not black, but often orange-red, which is also to make it easier for people to find. ”

What is an airplane black box? After reading the Lion Air black box, it will be clear that it is not black.

In the aftermath of the plane accident, people are looking for the "black box" that was originally installed on the plane to find out the truth about the crash, so what is the black box?