The truth about cell phones on the plane
The whole truth about Mobile telefnah the plane. Are mobile phones can lead to the collapse of an airliner? Several researchers decided to test this claim.
Passenger aircraft are actually forbidden to include mobile phones in flight. Some argue that the phones can lead to faulty electronics board aircraft. Others say that this is just a ploy to get the passengers to use the expensive phones that are installed in the aircraft.
Wishing to understand this question, the researchers decided to recreate the cockpit with all appliances. Then, they could see how they will affect mobile phones. The researchers bought the navigation and communication equipment - all that can affect radio. After a day of hard work they have to get a working cockpit. These devices easily able to detect beacon airport navigation system in San Francisco.
How do mobile phones can affect the plane? There are two options.
- First, turn off your phone's signal may be a radio signal from a tower or lighthouse.
- Secondly, the signal may interfere directly with the electronics of the navigation equipment.
The researchers felt that the interference - it is more probable version. Almost all electronic devices emit radio frequency radiation, whether game console or a DVD-player. To determine which power radio waves emitted by mobile phones, the researchers needed a spectrum analyzer. They are also used in isolation from external influences container, a so-called Faraday cage.
It is entirely made of brass wire and not miss radio. Inside it the researchers measured the radiation from the three items that often take passengers to board the plane. Radio emission from the CD-player, MP3 players and portable game console appeared faint. But as soon as the mobile phone has been activated, the spectrum analyzer recorded a strong jump. There were reasons to believe that the output power of a mobile phone can interfere with aircraft equipment.
Enlisting the help of an aerospace engineer Jeff Guth, researchers have tried to simulate a radio link between the airport and the aircraft. Also, they had a generator of cellular communication, through which it was possible to try to destroy this relationship. Mobile generator can create waves of varying strength. Through it you can see what force should be a signal that it could affect the radio equipment in the cockpit.
"After a long" bombardment "
Equipment no distortion was observed "
First, researchers have begun testing using wave standard GSM 1800. Phone with the standard used by millions of people around the world. However, after a long "bombardment" of equipment no distortion was observed. Even when the signal in 100 times the signal strength phones, aircraft equipment is operating normally. But when the generator is reconfigured to the frequency 800-900 MHz, strange things began to happen. The arrow of the device, which indicates where the aircraft is relatively runway, started strongly rejected. In fact, according to the experiment, devices operating at a frequency of 800-900 MHz, can greatly affect the navigation equipment of the aircraft.
It was only an intermediate result of the research, as all experiments were performed in the laboratory. The researchers decided to go to the airport and turn on the generator of mobile frequencies in this plane. Over several hours, they were exposed to plane waves for the different frequencies. We used the old analog phones standard PCS, and advanced smart phones. Many of them operate at 800-900 MHz. However, nothing has happened. None of the phone has not had an impact on the aircraft communications system to the ground. Mobile sabotage failed. The fact is that in contrast to the laboratory, all kilometers wires extending on the plane, are screened. Therefore, whatever signal is not working on them, it did not affect the operation.
"Check all for exposure
Interference from mobile phones too expensive.
Nobody wants to take risks, that's all. "
Why, then, there is a ban on the use of mobile phones in the aircraft? It seems that airlines simply reinsured.
Expert: The aircraft has a huge amount of equipment and systems. Check all to the effect of interference from mobile phones too expensive. Nobody wants to take risks, that's all. This is important, given that the new phones running on different frequencies, appear every month.
On the part of the International Civil Aviation Organization safer simply prohibit the use of phones on board. It is always one possibility out of a million that interference from the phone could affect the operation of onboard systems.
- Aviation and literature
- A uniform
- Military aviation
- Civil Aviation
- Helpful information
- The calendar
- Aviation and music
- game air
- Plane Crash
- Aviation and cinema
- Educational establishments
- Author's articles
- Assemblies and units of air equipment
- The probability of catastrophes
- Online Timetable
- The calculation of the distance
Best in the world of aviation