This fan blade is about 70 meters.
According to the official website of wind turbines, the mainstream blade shapes of wind turbines are 126, 110, 114, etc., and the corresponding blade sizes are 68m, 54m, 56m. Now the largest wind turbine blade diameter has exceeded It's 70 meters, equivalent to the wingspan of a Boeing airplane.
This fan blade uses wind energy to generate electricity. The design of the blade in the wind turbine directly affects the conversion efficiency of wind energy and directly affects its annual power generation. It is an important part of wind energy utilization.