Motor-generator connection shaft vent

摘要

A method of reducing loads on a connection shaft (22,22a) includes disengaging a connection shaft from a motor-generator (26) such that the connection shaft is not rotatably coupled to the motor-generator. The method communicates a fluid away from the motor-generator through a communication path (52,52a) established within the connection shaft. An example turbomachine connection shaft is configured to selectively rotatably couple a turbomachine rotor (14) and a motor-generator. The connection shaft establishes a communication path that selectively vents the motor-generator (26).