| 摘要 |
An automotive power plant includes three turbine rotors, of which one forms a spool together with the compressor, and the other two rotors are interconnected by a gearing. The first turbine rotor is undersized, and cannot provide the necessary power for driving the compressor at full load, although the spool does not have to drive any internal auxiliaries. A slim shaft, carried in air bearings and rotating at supercritical speed, also when the plant is idling, transfers power from the gearing to the compressor spool.
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