Lightweight clad bi-metal conductors for cryogenic applications

Abstract

Abstract Lightweight cryogenic conductors are required for applications in electric propulsion, such as cryogenically-fueled electric airplanes and ships. Clad bi-metal conductors allow to consider certain conductor metals that would not be feasible as a single conductor. This includes materials that are chemically reactive and materials that would not have the right mechanical properties to draw wires. The Ashby method is used to compare material combinations systematically. Manufacturing techniques and applications are also discussed. Copper-clad lithium wire stands out as one of the promising new types of clad bi-metal conductors for cryogenic applications.