鸟是人类的朋友。它能够消灭危害农作物的害虫，五颜六色的羽毛，俏皮可爱的动作给我们带来了无尽的欢乐。对于有的人来说，每天早晨能伴着鸟儿欢快清脆的歌声中醒来，别提是多么幸福的一件事了。 Birds are human friends. It can eliminate pests that harm crops, colorful feathers, and cute and cute gestures that bring endless joy to us. For some, it is a happy thing to wake up every morning with the sound of the birds singing and singing. 但机场附近的鸟类却是民航人的心头大患。从人类从事飞行活动之初，鸟类就被认为是对飞行活动的一种威胁。飞机被鸟类撞击，轻则航空器表面结构受损，航班返航备降；重则发动机被摧毁造成几百万的经济损失：甚至机毁人亡，后果不堪设想。推荐：www.ldgcasting.com www.chongjizuantou.com.cn www.helesuliao.com But the birds near the airport are a worry for civil aviation officials. Birds are considered a threat to flight at the beginning of their flight. The aircraft was struck by birds, and the aircraft's surface structure was damaged. The heavy engine was destroyed and caused millions of economic damage: even the destruction of the machine, the consequences would be disastrous. Recommendation: www.ldgcasting.com www.chongjizuantou.com.cn www.chongjizuantou.com.cn 据FAA（Federal Aviation Administration;美国联邦航空管理局）统计，每年美国有超过1万次鸟击飞机的事件，其中最常见的危害是损伤发动机，这类损伤一年要造成航空业9.5亿美元的损失。同样，近几年我国运输类飞机因鸟击导致的事故征候占总事故征候的很大比例，是数量最多的事故征候类型之一。频繁且严重的鸟击事件使得鸟击事件得到重视，目前国际航空联合会已把鸟击升级为A类航空灾难。鸟击对于民航的打击是沉重的，因此鸟害防治显得尤为重要。 According to the Federal Aviation Administration; The federal aviation administration) statistics, each year the United States has more than 10000 events of bird strike aircraft, including the dangers of the most common is the damage to the engine, such as the loss of the damage caused to aviation industry $950 million a year. In the same way, the number of accidents caused by bird strikes in China in recent years is one of the most common types of accidents. The frequent and serious bird strikes have taken the bird's strike seriously, and the international air federation has now upgraded the bird to A class A aviation disaster. Bird strikes are heavy on civil aviation, so bird prevention is particularly important. 区区小鸟为何会有如此大的威力？我们可以借助高中物理的动量守恒原理来解释：假设鸟的重量为0.225kg，鸟的飞行速度为150km/h,飞机的飞行速度取700km/h，鸟撞击飞机时间为1s，鸟撞击飞机后相对飞机静止。根据M(V初-V末)=F×t,公式，将上述数据带入可知，该鸟对飞机的作用力为1048N。我们再假设鸟与飞机的接触面积为18cm2 ，根据压强=力/接触面积可知，此时鸟对飞机的作用力就相当于一个重达1048kg的物体砸向飞机，（我们取该物体与飞机的接触面积为180平方厘米)。 Why is it so powerful? We can use the momentum conservation principle of high school physics to explain: assuming that bird is 0.225 kg, the weight of the bird's flight speed of 150 km/h, the speed of 700 km/h, bird hit the plane for 1 s, bird hit the plane after relatively static plane. According to M (initial - V) = F * t, formula, the above data is taken into the data, and the force of the bird to the plane is 1048N. We suppose the bird with the plane of the contact area for 18 cm2, according to the pressure = force/contact area, the forces of birds on the plane is equivalent to an object weighing 1048 kg at the plane, (we take the object and the plane of the contact area is 180 square centimeters).