Integrated brushless starter/generator system
First Claim
1. An aircraft gas turbine engine brushless starter/generator comprising:
- the aircraft gas turbine engine brushless starter/generator operable to provide both starting and electrical power generation for an aircraft gas turbine engine,a rotor rotatably mounted within a stator mounted within a housing of the aircraft gas turbine engine brushless starter/generator,an oil cooling system for using cooling oil from an aircraft gas turbine engine accessory gearbox for cooling the rotor and the stator,the rotor fixedly mounted on a rotor shaft, andthe oil cooling system including a rotor heat exchanger disposed within the rotor.
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Accused Products
Abstract
A brushless starter/generator includes a rotor rotatably mounted within a stator mounted within a housing and an oil cooling system using cooling oil from an engine accessory gearbox for cooling the rotor and the stator. The rotor is fixedly mounted on a rotor shaft having a rotor heat exchanger disposed therein. A stator heat exchanger for cooling the stator includes an oil jacket around the housing. The stator heat exchanger includes a grooved tube around the housing and axially extending axial passages connected to annular inlet and outlet manifolds in the grooved tube. The rotor shaft is operably connected to a power take-off shaft within the gearbox and rotatably supported by a shaft bearing in a gearbox casing of the accessory gearbox. The oil cooling system is a dry cavity oil cooling system which prevents cooling oil from entering an air gap between the rotor and the stator.
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Citations
20 Claims
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1. An aircraft gas turbine engine brushless starter/generator comprising:
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the aircraft gas turbine engine brushless starter/generator operable to provide both starting and electrical power generation for an aircraft gas turbine engine, a rotor rotatably mounted within a stator mounted within a housing of the aircraft gas turbine engine brushless starter/generator, an oil cooling system for using cooling oil from an aircraft gas turbine engine accessory gearbox for cooling the rotor and the stator, the rotor fixedly mounted on a rotor shaft, and the oil cooling system including a rotor heat exchanger disposed within the rotor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An aircraft gas turbine engine integrated brushless starter/generator system comprising:
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an aircraft gas turbine brushless starter/generator operable to provide both starting and electrical power generation for an aircraft gas turbine engine, the engine brushless starter/generator including a rotor rotatably mounted within a stator mounted within a housing of the aircraft gas turbine engine brushless starter/generator, the brushless starter/generator mounted to an aircraft gas turbine engine accessory gearbox, the rotor fixedly mounted on a rotor shaft extending into the gearbox and operably connected to an aircraft gas turbine power take-off shaft within the gearbox or to a gear train operably connected to the power take-off shaft within the gearbox, an oil cooling system for using cooling oil from the engine accessory gearbox for cooling the rotor and the stator, and the oil cooling system including a rotor heat exchanger disposed within the rotor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification