Constant speed transmission for gas turbine engine
First Claim
Patent Images
1. A gas turbine engine comprising:
- a spool;
a constant speed transmission driven by said spool;
a first pump driven by said constant speed transmission; and
a second pump driven by said constant speed transmission.
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Abstract
A gas turbine engine includes a constant speed transmission driven by a spool. The constant speed transmission drives a first pump and a second pump. In a further non-limiting example, the first pump is driven by a first drive shaft which is driven by the constant speed transmission and the second pump is driven by a second drive shaft which is driven by the first shaft through a gearbox to provide a constant speed ratio between the first shaft and the second shaft.
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Citations
17 Claims
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1. A gas turbine engine comprising:
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a spool; a constant speed transmission driven by said spool; a first pump driven by said constant speed transmission; and a second pump driven by said constant speed transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10)
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8. A gas turbine engine comprising:
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a spool; a constant speed transmission driven by said spool; a first pump driven by said constant speed transmission; and a second pump driven by said constant speed transmission, wherein said first pump is driven by a first drive shaft driven by said constant speed transmission and said second pump is driven by a second drive shaft driven by said first shaft through a gearbox to provide a constant speed ratio between said first shaft and said second shaft.
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11. A gas turbine engine comprising:
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a spool; a constant speed transmission driven by said spool; a first pump driven by said constant speed transmission; a second pump driven by said constant speed transmission; an Air-Oil Cooler downstream of said first pump; and an Air-Air PreCooler downstream of said second pump, said Air-Air PreCooler downstream of said Air-Oil Cooler. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification