Type A blades: Use flaps (ailerons) as braking devices on the outside of the leading edge;
Type B blades: Use tip braking devices, and lightning strike points basically occur a few kilometers away from the tip. Within a range of ten centimeters or on the edge of the tipping bucket support bearing;
C-type blade: It is a relatively new blade with a tip braking structure composed of steel wire cao. The lightning strike point of the C-type blade is also basically the same. It occurs within tens of centimeters from the tip or on the edge of the tipping bucket support bearing;
D type blades: all made of insulating materials.
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