| 摘要 |
A rotor, 24, has a rotor body, 28, for rotation about a shaft. A plurality of permanent magnets, 30, are spaced circumferentially about the rotor body, 28. A containment band, 32, is positioned radially outwardly of the permanent magnets, 30. The containment band, 32, has a containment band coefficient of thermal expansion. The permanent magnets have a permanent magnet coefficient of thermal expansion, taken parallel to a magnetic alignment. A ratio of the containment band coefficient of thermal expansion to the permanent magnet coefficient of thermal expansion is less than or equal to 1.15. |
