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First, play the role of interception
The anti-hail net can intercept all hail with a diameter greater than or equal to the mesh of the hail-proof net on the net, so that it cannot cause damage to crops.
Second, the buffer effect.
After the hail with a diameter smaller than the mesh falls, it collides with the hail net wire. Most of the kinetic energy of the hail falling is absorbed by the anti-hail net, which acts as a buffer. After the second fall, the kinetic energy of the hail becomes very small, and the kinetic energy of hitting the crops again has Not enough to cause damage to crops. Due to the uneven force on all sides when setting the net, the mesh size is seldom quadrilateral, but mostly rhombus. On the other hand, hail is mostly accompanied by strong wind during the landing process. The smaller the hail, the greater the influence of the wind. If the net is not set up, the windward side of the fruit ears will be severely damaged after the hail falls, and the leeward side will be lighter, and the hail will hit the line at a certain angle during the landing process. Therefore, the actual probability of collision of the hail net will be much higher than the theoretical value; in the end, only a few hail will pass directly through the mesh.
Setting up hail prevention nets is an active and effective defense measure. The successful development of this technology has replaced the anti-aircraft artillery hail prevention that has been used for many years. It is a major technological innovation in the history of artificial hail prevention.