Most are triggered by the thunder and lightning hit the plane, the remaining 10% (start of natural lightning) in the process of hit the plane, the plane itself caused by the electric field distortion also played a key role, it could prompt discharge are more likely to produce, starting from the body’s “pilot” will start towards the cloud of “pilot” development, leading to the final lightning.
Although aircraft can be struck by lightning, most of them do not have catastrophic consequences.
“This is mainly due to the fact that the skin of commercial aircraft is metal material, which provides good shielding effect, and the personnel and equipment inside the aircraft are relatively safe.”
But that doesn’t mean the plane didn’t suffer any damage from the lightning strike, Mr. Lu said.
The plane is not a completely shielded Faraday cage. There are many holes in it, some areas are non-metallic (such as the cover at the front of the plane), and some antennas are exposed. The intense electromagnetic radiation from lightning can still cause serious damage.
In addition, strong lightning currents can cause metal to melt.
In view of the aircraft itself, there are two main lightning protection methods: one is to use good conductor to connect or cover the bad conductor part of the casing to channel the current.
Because airplanes are made of lightweight metals and have a large body area, they can easily become giant electrostatic reservoirs when they are rubbed with air and induced by charged bodies.
When flying in the air, because of the electrostatic shield, the charge accumulates on the surface of the hull, and these charges must be released somehow, otherwise they can easily cause damage on the ground.
This calls for a second method, which uses a discharge brush from the fuselage or wings.
The discharge brush is installed on the surface of the aircraft.
The charge is concentrated on the sharp, thin edge of the plane’s surface. Without a discharge brush, when the charge accumulates to a certain amount of energy, it will cause a breakdown and discharge between the body and the air.
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