GEARED TURBOFAN ENGINE WITH INTER-SHAFT DEFLECTION FEATURE
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United States of America Patent
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Issued Date -
May 23, 2019
app pub date -
Jan 28, 2019
filing date -
Jan 28, 2019
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Abstract
A disclosed gas turbine engine includes a compressor section including a first compressor disposed axially forward of a second compressor, a combustor in fluid communication with the compressor section and a turbine section in fluid communication with the combustor. The turbine section includes a first turbine driving the first compressor and a second turbine driving the second compressor. An inner shaft defines a driving link between the second compressor and the second turbine and an outer shaft defines a driving link between the first compressor and the first turbine. The inner shaft and the outer shaft are concentric about a common axis of rotation. A bumper is disposed on the inner shaft within an axial region common to an aft portion of the outer shaft for accommodating interaction between the inner and outer shafts during high load conditions.
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