When a light bird collides with an airplane, does it cause an egg to hit a rock? What's the basis?

In fact, it would be more accurate to say that the plane hit the bird. There is a big difference in speed between the two. How can we say that a bird hit the plane? Besides, the sea and sky are vast, even birds can fly, but airplanes are outsiders! Of course, we are used to exclusivity. It's the bird's fault. Look at the exaggerated accident this bird caused! It stands to reason that a small, lightweight bird should be strawed into the wind when it collides with an airplane made of steel. Why would they crash the plane? This is because the damage comes primarily from the speed of the aircraft rather than the mass of the bird itself.

According to the momentum theorem, when a 0.45kg bird collides with an airplane traveling at 80km/h, it will produce an impact force of 153kg; when a 7kg bird hits an airplane traveling at 960km/h, the impact will be The force will reach 144 tons. The high-speed movement makes the destructive power of a bird collision reach an alarming level. A sparrow is enough to crash the engine of a landing aircraft. So it was most likely damaged after hitting a bird. However, due to the limited flight height of birds, aircraft generally take off or land when they collide with birds.

At this time, the speed of the plane was not very fast. At this time, if the nose of the aircraft or a solid part of the aircraft collides with the bird, it will not be a big problem. Of course, it is not just civilian aircraft that hit birds, but also fighter jets and slow-flying helicopters. For example, the F16 fighter jet hit a bird several times. Fortunately, the bird broke through the canopy and entered the cockpit. The pilot's helmet was covered with bird scraps, and the cockpit was a mess! There was also a relatively low-speed helicopter that was actually hit by a bird with a big hole in it.

Is this helicopter too weak? Actually not. The large-area glass cockpit structure of a helicopter is actually much more dangerous than a fighter jet. The aircraft's navigation system is mostly located forward. Due to the need for navigation, the mechanical strength of the protective covers of these devices, including the windshield, is poorer than other parts and is more likely to be damaged after being struck by a bird. However, the flight height of birds is limited. When an airplane descends to a height where it can hit a bird, it usually takes off or lands quickly. The speed is not very high at this time. At around 150km/h, racing cars are far faster than this. At this time, if a solid part such as the nose or wing root hits a bird, the problem is not serious, but at most it will scare the pilot. Even if the cockpit glass is smashed, it will feel like opening the window on the highway, and there will not be much problem in returning immediately.