An aircraft engine starter assembly provides for liquid cooling of the clutch assembly and overrunning engine by integrating a pitot pump in the system. The system includes a starter motor, a torque transfer connection, a clutch assembly and the pitot pump. The torque transfer connection is adapted
An aircraft engine starter assembly provides for liquid cooling of the clutch assembly and overrunning engine by integrating a pitot pump in the system. The system includes a starter motor, a torque transfer connection, a clutch assembly and the pitot pump. The torque transfer connection is adapted to be coupled to the aircraft engine. The clutch assembly is coupled to one of the starter motor or the torque transfer connection. The pitot pump is coupled to one or both of the torque transfer or the clutch assembly via a first oil line and a second oil line. The pitot pump comprises a pitot tube in fluidic communication with an oil reservoir for the delivery of oil under pressure to lubricate one or both of the torque transfer or the clutch assembly.
대표청구항▼
What is claimed is: 1. An aircraft engine starter having a centerline of rotation and comprising: a) a torque transfer connection adapted to be coupled to the aircraft engine; b) a starter motor; c) a clutch assembly coupled to one of the starter motor or the torque transfer connection, the clutch
What is claimed is: 1. An aircraft engine starter having a centerline of rotation and comprising: a) a torque transfer connection adapted to be coupled to the aircraft engine; b) a starter motor; c) a clutch assembly coupled to one of the starter motor or the torque transfer connection, the clutch assembly formed a radial distance from the centerline of rotation, the clutch assembly comprising a notch plate rotationally coupled to one of the starter motor or the torque transfer connection, a strut pocket plate rotationally coupled to the other of the starter motor or the torque transfer connection, an inter-plate space defined between the notch plate and the strut pocket plate, at least one spring having first and second ends, the first end bearing against the strut pocket plate, and at least one strut having first and second ends, the first end bearing against the strut pocket plate and the second end free to move toward the notch plate; d) an oil reservoir formed within the aircraft engine starter and having an oil supply within, the oil reservoir formed a radial distance from the centerline greater than the radial distance of the clutch assembly from the centerline of rotation; and e) a pitot pump coupled to one or both of the notch plate or strut pocket plate and positioned within the oil reservoir, the pitot pump configured to deliver oil under pressure to the inter-plate space through one or more holes in either the strut pocket plate or the notch plate or both, the oil under pressure in the inter-plate space creating an axially directed force tending to separate the strut pocket plate and the notch plate. 2. The starter of claim 1, wherein said pitot pump comprises a pitot tube in fluidic communication with the oil reservoir. 3. The starter of claim 2, wherein said pitot tube is an elongated tube that terminates in a tapered open end. 4. The starter of claim 2, wherein said pitot pump further comprises a trough, wherein said trough is at least partially submerged in the oil reservoir for channeling oil to said pump via said pitot tube. 5. The starter of claim 2, wherein said pitot pump further comprises a trough having contained therein lubricating oil. 6. The starter of claim 2, wherein said pitot pump delivers oil under pressure to the clutch assembly via a channel in fluidic communication with the pitot tube and the clutch assembly. 7. The starter of claim 1, wherein the notch plate includes a first face with at least one notch therein, the strut pocket plate includes a second face substantially parallel to the first face and spaced apart therefrom by the inter-plate space, wherein the second face has at least one pocket therein facing toward the first face. 8. An aircraft engine starter, comprising: a torque transfer connection adapted to be coupled to the aircraft engine; a starter motor; a clutch assembly formed a radial distance from the centerline of rotation, the clutch assembly comprising a notch plate rotationally coupled to one of the starter motor or the torque transfer connection, a strut pocket plate rotationally coupled to the other of the starter motor or the torque transfer connection, at least one spring having first and second ends, the first end bearing against the strut pocket plate, and at least one strut having first and second ends, the first end bearing against the strut pocket plate and the second end free to move toward the notch plate; an oil reservoir formed within the aircraft engine starter and having an oil supply within, the oil reservoir formed a radial distance from the centerline greater than the radial distance of the clutch assembly from the centerline of rotation; and a pitot pump coupled to one or both of the notch plate or strut pocket plate and positioned within the oil reservoir, the pitot pump configured to deliver oil under pressure to the clutch assembly through one or more holes in either the strut pocket plate or the notch plate or both. 9. The starter of claim 8, wherein said pitot pump comprises an elongated pitot tube that terminates in a tapered open end, in fluidic communication with the oil reservoir. 10. The starter of claim 9, wherein said pitot pump further comprises a trough, wherein said trough is at least partially submerged in the oil reservoir for channeling oil to said pump via said pitot tube. 11. The starter of claim 9, wherein said pitot pump further comprises a trough, wherein oil is trapped in said trough. 12. The starter of claim 9, wherein said pitot pump delivers oil under pressure to the clutch assembly through one or more holes in the clutch assembly. 13. The starter of claim 8, wherein the notch plate includes a first face with at least one notch therein, the strut pocket plate includes a second face substantially parallel to the first face and spaced apart therefrom by an inter-plate space, wherein the second face has at least one pocket therein facing toward the first face. 14. The starter of claim 8, wherein the pitot pump is coupled to one or both of the notch plate or strut pocket plate and delivers oil under pressure to the inter-plate space through one or more holes in either the strut pocket plate or the notch plate or both, the oil under pressure in the inter-plate space creating an axially directed force tending to separate the strut pocket plate and the notch plate. 15. The starter of claim 8, further including a first support bearings having a first race coupled to the strut pocket plate and a second race coupled to a first stator and a second support bearing having a first race coupled to the notch plate and a second race coupled to a second stator for radially supporting the strut pocket plate with respect to the notch plate. 16. An aircraft engine starter, comprising: a torque transfer connection adapted to be coupled to the aircraft engine; a starter motor; a clutch assembly formed a radial distance from the centerline of rotation, the clutch assembly comprising a notch plate rotationally coupled to one of the starter motor or the torque transfer connection, a strut pocket plate rotationally coupled to the other of the starter motor or the torque transfer connection, at least one spring having first and second ends, the first end bearing against the strut pocket plate, and at least one strut having first and second ends, the first end bearing against the strut pocket plate and the second end free to move toward the notch plate; an oil reservoir formed within the aircraft engine starter and having an oil supply within, the oil reservoir formed a radial distance from the centerline greater than the radial distance of the clutch assembly from the centerline of rotation; and a pitot pump coupled to one or both of the notch plate or strut pocket plate and positioned within the oil reservoir, the pitot pump configured to deliver oil under pressure to the clutch assembly, the pitot pump comprising an elongated pitot tube that terminates in a tapered end, in fluidic communication with the oil reservoir. 17. The starter of claim 16, wherein said pitot pump delivers oil under pressure to the clutch assembly through one or more holes in either the strut pocket plate or the notch plate or both. 18. The starter of claim 16, wherein said pitot pump delivers oil to the clutch assembly via a first oil line and oil is returned to the pitot pump via a second oil line.
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이 특허에 인용된 특허 (5)
Erickson ; John W. ; Williams ; Carter P., Lubricant cooling for high-speed pitot pump.
Libera, Tony; Pardini, Ronald; Peck, Ronald A., Air turbine starter systems including gearbox-integrated clutch modules and gas turbine engines employing the same.
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