Abstract
Melt-textured YBCO superconductors are capable of carrying higher current densities thancomparable copper conductors, and can therefore be used in electromechanical devicesrequiring high power densities. The advantage of textured YBCO superconductors is mostpronounced in large systems such as electromagnetic launchers for aircraft carriers. Ingeneral, an electromagnetic launcher consists of a series of stationary pulsed electromagnets(the primary), which attract and/or repel a carriage carrying one or more magnets (thesecondary). Several possibilities exist for the incorporation of HTSs into EM launchers,with the most direct being upgrading the magnets in the secondary to melt-texturedYBCO. A system was developed to study propulsive force in a coaxial-type launcher.Results from this study are presented and their implications for launcher developmentdiscussed. A second type of launcher was also studied, with a power supply integrated intothe launcher primary, so that the primary serves as a superconducting magnetic energystorage system. A method of optimizing energy conversion in a system of this type hasbeen found. The time dependence of the magnetic field in this type of launcher ispresented.
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