Why are mobile phones banned on airplanes Why are mobile phones banned on airplanes

Airplanes fly according to the prescribed route at high altitude, and if they deviate from the route and break the order of air traffic, it will be very dangerous. Therefore, the aircraft will communicate with the ground navigation station in real time through the radio navigation equipment during the flight, and the navigation equipment can measure the accurate position of the aircraft and help the aircraft navigate after receiving the electromagnetic wave signals continuously emitted by the ground navigation station. The mobile phone will emit electromagnetic wave signals during the call or answer, and will constantly contact the ground base station in the standby state.

As a result, it can seriously interfere with the navigation equipment on the aircraft, leading to dangerous situations.

Society is progressing, transportation is becoming more and more developed and faster, and the earth has begun to become a veritable global village. The plane is very fast, I believe that those who have taken the plane will find a problem, that is, to disable mobile phones on the plane, what is the reason? I believe that many friends don't know much, so let me answer your doubts.

The aircraft flies in a prescribed course at high altitude, and the entire flight process is under the command of the ground aviation management personnel. At high altitude, the pilot pilots use the communication and navigation equipment on the plane to communicate with the ground while flying the aircraft. The navigation equipment on the aircraft uses radio waves to find and navigate, and it receives continuous emissions from the ground navigation station'After electromagnetic waves, the exact position of the aircraft can be measured.

If the aircraft is found to be off course, the autopilot will immediately and automatically "correct" the error, allowing the aircraft to fly normally.

When the mobile phone is working, it will also radiate electromagnetic waves, which may interfere with the navigation equipment and operating system on the aircraft, so that the aircraft automatic control equipment receives wrong information and carries out wrong operations, which causes danger and even crashes the aircraft.

In addition to mobile phones, pagers and computers that use the Internet also emit electromagnetic waves, so these devices cannot be used on airplanes.

Because the test has shown that many avionics systems are transmitted by simulating mobile** communications. The use of mobile** devices can have a significant negative impact on the performance of these devices.

While these devices can withstand some interference from mobile** devices, in the worst-case scenario, they are not yet fully resistant to interference.

So for safety reasons, don't use your phone on the plane.

The use of the above-mentioned items on the aircraft will interfere with the wireless signal connection between the aircraft and the ground, especially when the aircraft takes off and descends, and even if it only causes a small angle of course deviation, it may also lead to the consequences of aircraft destruction and death. Except, of course, for the exclusive electronic entertainment provided on board.

The use of mobile phones can interfere with the normal flight status of the aircraft. The reason why the mobile phone will interfere with the normal flight of the aircraft is that in the take-off and landing phases, the mobile phone will search for signals after it is turned on, and the frequency used by the mobile phone and the electromagnetic wave frequency of the aircraft and the tower are similar or even superimposed, which may be regarded as the operation signal sent by the tower, causing misoperation.

But with the progress of science and technology, this problem has already been solved, this solution is the flight mode on the smartphone, but the Civil Aviation Administration of China has not certified the flight mode, and whether it is a Chinese manufacturer or a foreign manufacturer, whether it is a brand manufacturer or a copycat manufacturer, they are developing their own "flight mode" function, so it is difficult to guarantee that there is no problem. In other words, the approach taken by the Civil Aviation Administration of China is undoubtedly the safest and at the same time the least flexible. At the end of October last year, the FAA approved the ability for users to turn their mobile phones into "airplane mode" without turning them off during flights, but of course, the call function of mobile phones during flights is still expressly prohibited.

The ban on the plane to make a mobile phone is: 1, because after the mobile phone is turned on, the mobile phone band signal will interfere with flight communication and navigation safety, now civil aviation flight, computer automation dependence is very high, so it is particularly important to eliminate non-human factor interference, so passengers can not use mobile phones in the cabin. iPad (non-3G), laptop, MP4, PSP and other devices can be used in level flight, but do not turn on the Wi-Fi function.

2. In Article 88 of the Civil Aviation Law of the People's Republic of China, restrictions are placed on the use of portable electronic devices by passengers on board, and provisions are made in Article 200 to impose public security administrative penalties and even criminal penalties on violators. Airlines have also included a requirement for passengers to turn off portable electronic devices carried on board, including mobile phones, pagers, game console remote controls, amateur radio receivers, laptops, CD players, etc., which are prohibited from being used on board.

3. "Phone airplane mode" is not allowed.

Many passengers don't want to turn off the plane on the plane, so they turn on airplane mode", which is generally not allowed on the plane. Because airplane mode is only when you want to use certain functions in the phone, such as calculator, stopwatch, and clock, and you don't want to be disturbed by the outside world, the anti-interference state enabled at this time is not the state of the phone cutting off the signal. From a scientific point of view, flight mode is not 100 percent zero."

This means that the emergence of the concept of "flight mode" has nothing to do with smart machines, let alone with being able to use them on airplanes. So on the plane, it is still necessary to turn off the whole time. Therefore, there are some factors that prohibit the use of mobile phones on board the aircraft.

Airplanes fly in the air and rely mainly on communication systems and operating systems to work. The use of mobile phones on the plane may cover the electromagnetic waves of the aircraft, resulting in communication interruption and ambiguous instructions, especially when the aircraft take-off and landing communication is busy, the interference is greater. Therefore, please cherish life and consciously turn off the computer to protect safety.

The aircraft will pass through the atmospheric ionosphere during take-off and landing, and in this space, the signal of any electromagnetic equipment is easy to be amplified, which affects the normal operation of the electronic equipment on the flight frame, so the general flight attendant will ask you to turn off your mobile phone when taking off and landing, which is responsible for yourself and the safety of others' lives.

Because a mobile phone can affect the plane, the plane cannot have a single accident, otherwise hundreds of lives will destroy the plane and kill people, and you can't afford to play. That's why it's strictly forbidden.

Fear that the signals sent and received by the mobile phone will interfere with the signals sent and received by the aircraft and affect the flight.

Why is it forbidden to use mobile phones on airplanes?

Because the aircraft will always keep the information flowing with the control center of the airport during the flight process, if the passenger dials the mobile phone, the mobile phone signal may interfere with the information flow between the aircraft and the control center, thereby affecting the flight safety of the aircraft. So it is recommended that when you take the plane, do as required and turn off your mobile phone.

Radio waves from mobile phones may also cause** or affect the navigation system of an airliner flying at an altitude of 9,500 meters. 1. Scientific evidence also shows that the use of mobile phones on board is indeed potentially dangerous. If the frequency of the electrical appliance is more different from that of some aircraft, the interference caused will be minimized or completely undisturbed.

In addition to the strength of the electrical signals transmitted by mobile phones, computers, radios, etc., which affect the aircraft, if the frequency they transmit happens to be the same or similar to the frequency of the aircraft, plus the amplitude (or amplitude), it will cause the greatest damage and a dangerous situation. 2. On the plane, the mobile phone in use will interfere with the communication, navigation and control system of the aircraft, which is a threat to flight safety"Killers"。Throughout the flight, the flight has used the on-board radio navigation equipment to maintain real-time contact with the ground navigation station and control the flight path.

In the case of low visibility, the instrument landing system needs to be used for landing, that is, the blind landing platform on the runway is used to send electromagnetic signals to the aircraft to determine the runway position. The mobile phone not only emits electromagnetic signals during the call or reception, but also constantly contacts the ground base station in the standby state. In its search process, although the time for each transmission signal is short, there is a strong continuity.

Therefore, the electromagnetic waves emitted by the mobile phone will cause interference to the navigation system of the aircraft.

Mobile phones also need a signal, and if you use your phone on a plane, it will interfere with the plane's signal, which can be serious.

This affects the aircraft's communication system.