An example method of reducing loads on a connection shaft includes disengaging a connection shaft from a motor-generator 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 establis
An example method of reducing loads on a connection shaft includes disengaging a connection shaft from a motor-generator 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 established within the connection shaft. An example turbomachine connection shaft is configured to selectively rotatably couple a turbomachine rotor and a motor-generator. The connection shaft establishes a communication path that selectively vents the motor-generator.
대표청구항▼
1. A turbomachine connection shaft assembly, comprising: a connection shaft that is configured to selectively rotatably couple a turbomachine rotor and a motor-generator,the connection shaft establishing a communication path that selectively vents a fluid from the motor-generator, the communication
1. A turbomachine connection shaft assembly, comprising: a connection shaft that is configured to selectively rotatably couple a turbomachine rotor and a motor-generator,the connection shaft establishing a communication path that selectively vents a fluid from the motor-generator, the communication path established within the connection shaft. 2. The turbomachine connection shaft assembly of claim 1, wherein the fluid moves from the communication path to a turbine engine having the turbomachine rotor. 3. The turbomachine connection shaft assembly of claim 1, wherein the fluid moves from the communication path to ambient. 4. The turbomachine connection shaft assembly of claim 1, further comprising: an expansion plug disposed within an axially extending bore that is established within the connection shaft, the expansion plug defining an aperture that communicates the fluid from a first axial side of the expansion plug to an opposing, second axial side of the expansion plug. 5. The turbomachine connection shaft assembly of claim 4, wherein the aperture is coaxial with the connection shaft. 6. The turbomachine connection shaft assembly of claim 4, including a dollop of solder that moves from a first position when the connection shaft and the motor-generator are rotatably coupled to a second position when the connection shaft and the motor-generator are rotatably decoupled, the dollop of solder configured to restrict flow through the aperture in the first position and allow flow in the second position. 7. The turbomachine connection shaft assembly of claim 1, including a screened plug disposed within a portion of the communication path, wherein the communication path communicates the fluid to an engine. 8. The turbomachine connection shaft assembly of claim 1, wherein the connection shaft defines at least one hole extending from an axially extending bore to a radially outer surface of the connection shaft. 9. The turbomachine connection shaft assembly of claim 8, wherein the communication path comprises portions of the bore, an aperture, and the hole. 10. The turbomachine connection shaft assembly of claim 1, including a journal shaft that receives an end portion of the connection shaft, the connection shaft configured to rotate the journal shaft, wherein the journal shaft is configured to selectively rotatably couple the connection shaft to the motor-generator. 11. The turbomachine connection shaft assembly of claim 1, wherein the motor-generator is a variable frequency generator. 12. A motor-generator assembly, comprising: a motor-generator; anda connection shaft rotatably coupled to a rotor of a gas turbine and selectively rotatably coupled to the motor-generator, wherein the connection shaft establishes a communication path configured to block fluid flow when the connection shaft is coupled to the motor-generator, and to vent the motor-generator when the connection shaft is decoupled from the motor-generator, the communication path established within the connection shaft. 13. The motor-generator assembly of claim 12, including a journal shaft received over one end of the connection shaft, the journal shaft configured to rotate together with the connection shaft. 14. The motor-generator assembly of claim 13, including a radial support bearing arrangement configured to support the connection shaft, wherein the connection shaft rotates with the radial support bearing arrangement when the connection shaft is coupled to the motor-generator, and the journal shaft rotates relative to the radial support bearing when the connection shaft is decoupled from the motor-generator. 15. A method of reducing loads on a connection shaft, comprising: disengaging a connection shaft from a motor-generator such that the connection shaft is not rotatably coupled to the motor-generator; andcommunicating a fluid away from the motor-generator through a communication path established within the connection shaft. 16. The method of claim 15, wherein the disengaging comprises disengaging jaws of a journal shaft with corresponding jaws of the motor-generator. 17. The method of claim 15, wherein the method is performed on an aircraft and the connection shaft is biased axially toward the motor-generator during all stages of flight of the aircraft. 18. The motor-generator assembly of claim 12, including a screened plug disposed within a portion of the communication path. 19. The method of claim 15, including limiting movement of debris along the communication path using a screened plug. 20. The method of claim 15, including blocking the communication path when the connection shaft engages the motor-generator.
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이 특허에 인용된 특허 (10)
Lampe Steven W. (San Diego CA), Clutch to disconnect loads during turbine start-up.
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