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Analysis and Examination of Eddy Current Brake for Aircraft Using Composite Disc

This study discusses using eddy current brake (ECB) as next-generation non-contact brakes in aircraft. This paper describes composite disc ECBs. In this paper, first, numerical analysis using COMSOL Multiphysics was performed and the distribution of magnetic flux density and current density was measured in the disc. From this analysis, it was confirmed that a use of a composite disc reduces the magnetic gap, increases the magnetic flux density, and increases the generated current density. Based on the results of this analysis, the braking torque was measured using an experimental device. Three experiments were performed under three-phase AC excitation. The experiment was conducted to study excitation frequency characteristics, excitation current characteristics, and disc rotation speed characteristics. From these experiments, it was confirmed that the braking torque increased when a composite disc was used. In addition, using a composite disc met 80.3 % of the braking torque required for regional jets.