Under normal process, carbon fiber propellers with metal edging hardly increase aerodynamic resistance and can even reduce resistance losses after long-term use; Only when the edging process is rough and the adhesion is poor, will the resistance be slightly increased. The key lies in the forming process, adhesion, and shape design of the metal edging, rather than the edging itself.

Metal edging with formal craftsmanship, without additional resistance, can optimize long-term aerodynamic performance. Metal edging is designed for the aerodynamic shape of the blade, with the core being the local edging of the blade leading edge, mainly reflected in the following three key elements:

1. Streamlined seamless fit: The metal edging is electroplated with a thickness of only 0.1~0.5mm (depending on the blade size), fully fitting the streamline of the carbon fiber blade leading edge, with a smooth transition without steps or gaps, and without generating additional eddy current resistance;

2. Only partial edge wrapping, without changing the aerodynamic shape of the blade body: The edge wrapping only covers the wear-resistant area at the leading edge of the blade, and the blade surface, back, and trailing edge of the blade maintain the original aerodynamic design of carbon fiber. The overall aerodynamic profile remains unchanged, and the lift to drag ratio of the core is not affected;

3. The metal surface is smoother and reduces abrasion resistance: The leading edge of carbon fiber will be eroded by dust and airflow for a long time, resulting in fuzzing and micro defects, leading to surface roughness and increasing aerodynamic resistance; And metal edging (nickel alloy) has high hardness and smooth surface, which can maintain the aerodynamic smoothness of the leading edge for a long time, avoiding the later resistance increase caused by carbon fiber abrasion, and indirectly stabilizing the aerodynamic performance of the blade.

In short, choosing the right process is key: electroplating, high-precision cold bending bonding of metal edging, no additional resistance, and can also improve the long-term stability of blade aerodynamic performance.