A dense residential...

Recently, such a thrilling scene happened to Wang Jiandong, a pilot of a certain brigade of the Chinese Air Force Aviation. Finally, Wang Jiandong successfully avoided the residential area and parachuted.

While being moved by our heroes, we had to turn our eyes to the culprit that caused the accident: flying birds!

According to the statistics of the Aviation Safety Net of the Flight Safety Foundation, there were 51 incidents of passenger plane crashes caused by "birds colliding with planes" worldwide from 1955 to 2007. "Bird collision" caused much more damage to military aircraft: The figures of the International "Bird collision" committee showed that between 1959 and 1999, birds crashed and destroyed 283 military aircraft. The annual losses caused by "birds colliding with planes" are about 1.2 billion US dollars.

In recent years, various kinds of bird damage news have also emerged in endlessly:

 Singapore "Lianhe Zaobao" (Kathmandu 17:55) A Chinese passenger plane carrying 212 passengers had an accident at Kathmandu Airport in Nepal. The passenger plane crashed into a bird on the left engine a few seconds before takeoff. Fortunately, the pilot “braked in time” ", the passenger plane stopped before the end of the runway and escaped an air crash.

Xinhuanet, New Delhi, August 17: A domestic civil flight in India was hit by a bird shortly after taking off from the southern port city of Madras on the morning of the 17th. Fortunately, the pilot found it in time and returned to the airport for a forced landing.

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Bird infestation can have a huge impact on the safe flight of aircraft. The prevention and control of bird damage at airports has always been an important work point for daily airport protection. However, most of the current domestic bird repelling methods have little effect and still have no obvious effect on birds. , The protection range is small, and frequent maintenance is required. There is an urgent need for a safe, effective and maintenance-free way of repelling birds.

According to a study by the International Bird Strike Committee, bird eyes are most sensitive to laser beams with a wavelength of 532nm. Based on this, the laser bird repeller developed by Usiland company uses bionics as a design inspiration and emits a 532nm green laser when working. It can not only cover a protection area of more than 100m, but also has the advantages of no harm to birds, no consumables, and automatic work. It has been widely used in substations, photovoltaic power plants, military airports and civil aviation airports.

(A laser bird repeller in operation at an airport)