Why are the fan blades of wind turbines used for wind power generation so small[3]

I think it is a matter of weight, because if it is made larger and the fan blades are heavier, they will be less likely to be blown by the wind, so it should be the calculated volume and wind-receiving area that are most likely to be blown. Because the fan blades of large-scale wind turbines are relatively large and cannot be compared with those of electric fans, and their weight is relatively heavy. If there are too many blades, the weight will become a hindrance to rotation.

As for the second question, I think 1 is the cost, and 2 is to consider the air flow. Maybe if they are close, the wind flow will interfere with each other.

?Recently, another murder occurred in Chengbu Miao Autonomous County, Shaoyang City, Hunan Province. This accident was a traffic accident, and the culprit was a wind power fan blade. It is understood that the specific situation was that a van and a heavy truck, that is, a truck carrying wind turbine fan blades, collided. What's even more frightening is that the blades of the fan blades loaded on the van were inserted directly from the front windshield side of the van. Right up to the back seat of the van. After the accident, one member of the van was killed and one injured.

After the incident, the police immediately intervened to investigate the situation. After investigation, it was found that the van driver, 26-year-old Yang Moumou, was a villager in Nanmu Village, Rulin Town, Chengbu Miao Autonomous County, and Yang's friend from the same village, 28-year-old Peng Moumou, was also sitting in the van. They drove a van and hit the wind turbine fan blades loaded on the vehicle driven by 44-year-old Song Moumou from Xiangtan City. In the end, Yang's friend died on the spot, and Yang was also injured but not life-threatening. Some netizens also said that the fan blades looked very long, and there were no professional escorts when waiting at the red light. It is also possible that the van driver's vision was blocked and the accident occurred.

Regarding this very large fan blade, it is at least tens of meters long, and transportation is an even more difficult process. Traffic accidents may easily occur if there are no professional escorts. And for these wind power companies, it is very important to choose a route when transporting such ultra-large power generation equipment. Safety must be considered first. Even if traveling to sparsely populated areas will increase costs, safety cannot be ignored for the sake of some benefits.

Wind power is what we often call clean energy, and in some uninhabited areas, the fan blades of wind power are even larger. With the advancement of our science and technology, more and more large-scale equipment are approaching our lives, so we must always pay attention to dangers when we go out. We are happy with the big equipment brought by technology, but we must always pay attention to the dangers brought by big equipment and always put safety first.