Twin spool turbine engine with power take-off means on the low-pressure and high-pressure rotors, and power take-off module for the turbine engine
First Claim
1. A twin spool turbine engine comprising:
- a high-pressure rotor,a low-pressure rotor,at least one accessory gearbox,drive means for driving coaxial transmission shafts that transmit movement to the accessory gearbox, wherein the drive means comprises a high-pressure drive pinion secured to the high-pressure rotor near its upstream end, a low-pressure drive pinion secured to the low-pressure rotor upstream of the high-pressure rotor, anda power take-off module in direct mesh with the drive pinions, driving the transmission shafts, wherein said power take-off module comprises a cylindrical portion secured to said coaxial transmission shafts and a frustroconical portion extending internally from said cylindrical portion, said power take-off module further comprising a high pressure take-off pinion secured to said frustroconical portion and in direct mesh with said high-pressure drive pinion, and a low pressure take-off pinion secured to said frustroconical portion and in direct mesh with said low-pressure drive pinion.
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Accused Products
Abstract
The invention relates to a twin spool turbine engine comprising a high-pressure rotor and a low-pressure rotor, at least one accessory gearbox, a drive means, driving coaxial transmission shafts that transmit movement to the accessory gearbox, characterized in that the drive means comprises a high-pressure drive pinion secured to the high-pressure rotor near its upstream end, a low-pressure drive pinion secured to the low-pressure rotor upstream of the high-pressure rotor, and a power take-off module in direct mesh with the drive pinions, driving the transmission shafts.
By virtue of the invention, the transmission shafts run coaxial with one another and therefore pass through a single arm. The use of a power take-off module simplifies the mechanism. The turbine engine is simpler to assemble.
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Citations
11 Claims
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1. A twin spool turbine engine comprising:
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a high-pressure rotor, a low-pressure rotor, at least one accessory gearbox, drive means for driving coaxial transmission shafts that transmit movement to the accessory gearbox, wherein the drive means comprises a high-pressure drive pinion secured to the high-pressure rotor near its upstream end, a low-pressure drive pinion secured to the low-pressure rotor upstream of the high-pressure rotor, and a power take-off module in direct mesh with the drive pinions, driving the transmission shafts, wherein said power take-off module comprises a cylindrical portion secured to said coaxial transmission shafts and a frustroconical portion extending internally from said cylindrical portion, said power take-off module further comprising a high pressure take-off pinion secured to said frustroconical portion and in direct mesh with said high-pressure drive pinion, and a low pressure take-off pinion secured to said frustroconical portion and in direct mesh with said low-pressure drive pinion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A twin spool turbine engine comprising:
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a high-pressure rotor, a low-pressure rotor, at least one accessory gearbox, a drive means for driving coaxial transmission shafts that transmit movement to the accessory gearbox, wherein the drive means comprises a high-pressure drive pinion secured to the high-pressure rotor near its upstream end, a low-pressure drive pinion secured to the low-pressure rotor upstream of the high-pressure rotor, and a power take-off module in direct mesh with the drive pinions, driving the transmission shafts, wherein said power take-off module is a preassembled module mounted on said turbine engine as a unit comprising a high pressure take-off pinion configured to be in direct mesh with said high-pressure drive pinion, and a low pressure take-off pinion configured to be in direct mesh with said low-pressure drive pinion.
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Specification