Aeronautical Electrical Conductor with Silvered Copper Alloy Strand

The patent applies composite materials by creating a strand with a copper core surrounded by a silvered copper alloy layer. The copper core provides excellent electrical conductivity, while the silvered copper alloy layer enhances mechanical resistance and tensile strength. This composite structure allows the strand to simultaneously achieve both high electrical conductivity and high mechanical resistance, resolving the contradiction between these two properties.

The patent applies parameter changes by precisely controlling the silver content in the copper alloy layer to be between 0.1% and 0.5% by mass. This optimized silver content provides sufficient mechanical resistance enhancement while minimizing the weight increase that would result from higher silver concentrations. The parameter optimization allows achieving the desired mechanical properties without excessive weight gain.

The patent applies segmentation by dividing the conductor into multiple independent strands, each with a copper core and silvered copper alloy layer. These segmented strands are then assembled in specific configurations (such as the 19-strand configuration with central, intermediate, and peripheral strands). This segmentation allows each strand to be optimized for both mechanical and electrical properties while the overall assembly achieves the desired performance, managing complexity through modular design.

The patent applies local quality by placing silvered copper alloy layers specifically on the peripheral strands that are in contact with connection parts, rather than uniformly across all strands. This localized application of the silvered layer targets the specific areas where contact resistance is most critical, minimizing contact resistance at connection points while reducing the overall manufacturing complexity compared to applying silvered layers to all strands.