From Colombia aeroplane crash on aircraft lightning protection measures

Civil aircraft in how lightning in thunderstorms and lightning on aircraft and? what's hurting? currently aircraft lightning protection has become protected security masses an important field.

August 16, a passenger plane in Colombia San Andres Island lightning crashes when landing, there was one death, 120 people were injured, of which five were injured, airframe was broken into 3 sections, severe aircraft damage. Aircraft lightning protection once again become the focus of everyone talked about, whether by plane, the plane on Lightning Safety and the protection measures?

A passenger plane in Colombia Saint lightning crashes when landing aircraft lightning protection measures focus

We know that often lightning have three major forms: one is charged clouds and the Earth at a point between the rapid discharge phenomenon, known as the "lightning".

The second is the role of charged clouds as static induction, causes the ground to a certain extent with dissimilar charge. When lightning occurs later, cloud live quickly disappeared, and ground some scope due to the large bulk flow resistance, resulting in a local high-voltage, or a lightning discharge process, the powerful pulse current around the conductor or metal produce Electromagnetic induction occurred due to high voltage lightning phenomenon occurs is called the "second ray" or "lightning". The third, "ball lightning." Through the description of the event, the lightning strike should belong to the second "second ray", for the aircraft in a relatively large.

And severe thunderstorms often accompanied by lightning, Thunder, storm, Gale, and sometimes tornadoes and hail, microburst, hazardous weather.

When the aircraft entered a strong thunderstorm activity area, light to cause damage to the aircraft weight machine crash. Half of the world, in a plane crash caused by thunderstorms. As of 22 June 2000 start of airlines that is caused by a thunderstorm. In the face of such fierce lightning, aircraft and do what lightning protection measures?

It is understood that an aircraft in flight is not installed lightning, but air or with lightning.

In fact the lightning rod is a cited Lei needle, installed in the floor of a building or structure, its role is to air the current lightning, by jieshan Qi, down lead and grounding to the Earth, protecting property and personal safety. While the aircraft and the ground is not a contact, the aircraft did not lightning rod. Aircraft lightning protection equipment is installed in the aircraft main wing or tail tip's "electrostatic discharge", it is like a brush as brush metal discharge, about 3 finger thick root by dozens of very thin needle, the total resistance is relative to the fuselage is very small. According to the principle point discharge, discharge brush to the airplane outer covering huge charge into the atmosphere, some aircraft on installation of electrostatic discharge for up to ten.

In addition, the shell-metallic material structure is generally equipped with lightning, for example, nose radome lightning of the surface, the tail is also buried the lightning, their role is to make the lightning current smooth surface through the enclosure.

Therefore, when the plane was struck by lightning, lightning protection equipment mentioned above will help the current through the enclosure to the fuselage or wings out of metal discharge brush and rapid discharge. Tens of thousands of hours each flight the aircraft may have been struck by lightning, but most of all is the conductor of the enclosure, so when the aircraft struck by lightning, current flows through the enclosure will not be formed "voltage difference", and the fuselage or wings out of lightning discharge, and will not enter the conductor had internal injuries to passengers, and sometimes strong currents in the flow through the fuselage or the wing skin is left small holes or gaps, the ablation on flight and, because modern new aircraft have the seal resistance and prevent sparks ignite the fuel tank of the structure.

Basic aircraft lightning protection measures is feeding the enemy on the first

At the same time, small series also informed that the plane will be fitted with a radar antenna towards the ground, so that the plan position indicator on the display shows a "radar map", the pilot by watching radar map, you can always know thunderstorms occur, ensure that the aircraft by the airline.

It can be said that the aircraft was in response to lightning ready.

The aircraft itself has done considerable lightning protection measures, but to avoid being struck by lightning event occurs, you also need to strictly enforce the thunderstorm, etc.

After all, the power of lightning is quite large, it is a good protection measures are likely to have problems, use of radar and lightning region know in advance, the advance of bypass is the guarantee of fundamental guarantees the safety of aircraft. Seen from this Colombia event, the pilot on the from the runway is very close to the lightning was found, but did not avoid landing, as usual, is still causing accidents. Fortunately, no large casualties, amidst misery.