| Popis: |
Magnetic gears are currently being developed for use in a variety of industries such as wind and automotive, because of their higher reliability and lower maintenance cost than their mechanical counterparts. The bulk of magnetic gear development to date has focused on maximizing the technology's volumetric torque density (torque per unit volume). In contrast, the primary performance metrics for an aircraft's gear box are its mass and efficiency. To that end, this paper presents a study of the achievable electromagnetic specific torque (torque per unit electromagnetic mass) and efficiency of concentric magnetic gears. NASA's second magnetic gear prototype is used as the baseline for this study. Achievable electromagnetic specific torque and efficiency trends are presented with respect to higher-level design variables such as gear ratio and radius. |
