A pump for a gas turbine engine is provided. The pump includes a first drive track having a spline and a first gear each rigidly attached to a first driveshaft. The pump also includes a second drive track having a second gear rigidly attached to a second driveshaft. The second gear is mechanically c
A pump for a gas turbine engine is provided. The pump includes a first drive track having a spline and a first gear each rigidly attached to a first driveshaft. The pump also includes a second drive track having a second gear rigidly attached to a second driveshaft. The second gear is mechanically coupled to the first gear. Additionally, a first lubrication supply pump is mechanically coupled to the first driveshaft and a second lubrication supply pump is mechanically coupled to the second driveshaft. The first and second lubrication supply pumps are together configured to provide a desired amount of lubrication to the gas turbine engine.
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1. A pump for a gas turbine engine comprising: a first drive track including a first driveshaft, a spline, and a first gear, the spline and the first gear each rigidly attached to the first driveshaft;a second drive track including a second driveshaft and a second gear, the second gear rigidly attac
1. A pump for a gas turbine engine comprising: a first drive track including a first driveshaft, a spline, and a first gear, the spline and the first gear each rigidly attached to the first driveshaft;a second drive track including a second driveshaft and a second gear, the second gear rigidly attached to the second driveshaft and mechanically coupled to the first gear;a first lubrication supply pump mechanically coupled to the first driveshaft; anda second lubrication supply pump mechanically coupled to the second driveshaft, the first lubrication supply pump and second lubrication supply pump together configured to provide a desired amount of lubricant to the gas turbine engine. 2. The pump of claim 1, wherein the first lubrication supply pump is configured to provide the gas turbine engine up to about half of a desired amount of lubricant, and wherein the second lubrication supply pump is also configured to provide the gas turbine engine up to about half of the desired amount of lubricant. 3. The pump of claim 1, further comprising: a first scavenge pump mechanically coupled to the first driveshaft; anda second scavenge pump mechanically coupled to the second driveshaft, the first and second scavenge pumps each configured in fluid communication with a sump of the gas turbine engine for removing a desired amount of lubricant from the sump of the gas turbine engine. 4. The pump of claim 1, further comprising: a first mid scavenge pump mechanically coupled to the first driveshaft and fluidly connected to a first lubrication exit of a mid sump;a second mid scavenge pump mechanically coupled to the second driveshaft and fluidly connected to a second lubrication exit of the mid sump;a first AGB scavenge pump mechanically coupled to the first driveshaft and fluidly connected to a first lubrication exit of the AGB;a second AGB scavenge pump mechanically coupled to the first driveshaft and fluidly connected to the second lubrication exit of the AGB;a third AGB scavenge pump mechanically coupled to the second driveshaft and fluidly connected to a third lubrication exit of the AGB; anda fourth AGB scavenge pump mechanically coupled to the second driveshaft and fluidly connected to a fourth lubrication exit of the AGB. 5. The pump of claim 1, further comprising: a first scavenge pump mechanically coupled to the first driveshaft and including an outlet;a first return line for fluidly connecting the outlet of the first scavenge pump to a tank of the gas turbine engine; anda first return valve positioned in fluid communication with the first return line, the first return valve movable between an open position allowing a flow of fluid through the first return line and a closed position blocking a flow of fluid through the first return line. 6. The pump of claim 5, wherein the first return valve is a hydraulic valve movable to the open position when a pressure differential across the first lubrication supply pump is greater than a predetermined threshold. 7. The pump of claim 1, further comprising: a first lubrication supply line fluidly connected to the first lubrication supply pump for providing a flow of lubricant from the first lubrication supply pump to the gas turbine engine; anda first check valve positioned in the first lubrication supply line for blocking a flow of lubricant through the first lubrication supply line from the gas turbine engine towards the first lubrication supply pump. 8. The pump of claim 1, wherein the first driveshaft of the first drive track defines a shear section, and wherein the second driveshaft of the second drive track also defines a shear section. 9. The pump of claim 1, wherein the first gear is a first spur gear, and wherein the second gear is a second spur gear. 10. A gas turbine engine comprising: a compressor section;a turbine section mechanically coupled to the compressor section; anda pump, the pump including a first drive track including a first driveshaft, a spline, and a first gear, the spline and the first gear each rigidly attached to the first driveshaft;a second drive track including a second driveshaft and a second gear, the second gear rigidly attached to the second driveshaft and mechanically coupled to the first gear;a first lubrication supply pump mechanically coupled to the first driveshaft; anda second lubrication supply pump mechanically coupled to the second driveshaft, the first lubrication supply pump and second lubrication supply pump together configured to provide a desired amount of lubricant to the gas turbine engine. 11. The gas turbine engine of claim 10, further comprising a sump positioned at least partially in at least one of the compressor section or turbine section of the gas turbine engine;a first scavenge pump mechanically coupled to the first driveshaft; anda second scavenge pump mechanically coupled to the second driveshaft, the first and second scavenge pumps each configured in fluid communication with the sump for removing a desired amount of lubricant from the sump. 12. The gas turbine engine of claim 11, wherein the first scavenge pump is configured to remove up to about half of a desired amount of lubricant from the sump, and wherein the second scavenge pump is also configured to remove up to about half of the desired amount of lubricant from the sump. 13. The gas turbine engine of claim 10, wherein the first lubrication supply pump is configured to provide the gas turbine engine up to about half of a desired amount of lubricant, and wherein the second lubrication supply pump is also configured to provide the gas turbine engine up to about half of the desired amount of lubricant. 14. The gas turbine engine of claim 10, further comprising a plurality of sumps positioned in at least one of the compressor section or the turbine section;a first plurality of scavenge pumps mechanically coupled to the first driveshaft of the first drive track, each of the first plurality of scavenge pumps fluidly connected to one of the plurality of sumps and configured to remove up to about half of a desired amount of lubricant from the respective sump; anda second plurality of scavenge pumps mechanically coupled to the second driveshaft of the second drive track, each of the second plurality of scavenge pumps fluidly connected to one of the plurality of sumps and configured to remove up to about half of the desired amount of lubricant from the respective sump. 15. The gas turbine engine of claim 10, further comprising a first scavenge pump mechanically coupled to the first driveshaft and including an outlet;a first return line for fluidly connecting the outlet of the first scavenge pump to a tank of the gas turbine engine; anda first return valve positioned in fluid communication with the first return line, the first return valve movable between an open position allowing a flow of fluid through the first return line and a closed position blocking a flow of fluid through the first return line. 16. The gas turbine engine of claim 15, wherein the first return valve is a hydraulic valve movable to the open position when a pressure differential across the first lubrication supply pump is greater than a predetermined threshold. 17. The gas turbine engine of claim 10, further comprising a first lubrication supply line fluidly connected to the first lubrication supply pump for providing a flow of lubricant from the first lubrication supply pump to the gas turbine engine; anda first check valve positioned in the first lubrication supply line for blocking a flow of lubricant through the first lubrication supply line from the gas turbine engine towards the first lubrication supply pump. 18. The gas turbine engine of claim 10, wherein the first driveshaft of the first drive track defines a shear section, and wherein the second driveshaft of the second drive track also defines a shear section. 19. The gas turbine engine of claim 10, wherein the first gear is a first spur gear, and wherein the second gear is a second spur gear. 20. The gas turbine engine of claim 10, wherein the gas turbine engine is an aeronautical gas turbine engine.
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이 특허에 인용된 특허 (7)
Gibson, Nathan; Hogan, John; Robinson, John D.; O'Brien, Mike, Emergency engine lubrication systems and methods.
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