| 摘要 |
A rotor assembly for a gas turbine, the rotor assembly including a turbine shaft 34 and a compressor shaft 32 connected by transmission means. The transmission means between the turbine and compressor includes a first torque means 36, and a second torque means, 46 and 44. The transmission of torque through the second torque means occurs following failure of the first torque means. The first torque transmission means may include a spline 36, which may be helical, and urges the turbine and compressor towards one another under a torque load. The second torque transmission means may include a toothed contact which is engaged following failure of the first torque means. The rotor may have a torsionally weak region 48 located between the first and second torque means which fails when the drive is via the second torque transmission means.
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