Gear arrangement
First Claim
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1. A gas turbine engine gearbox arrangement, comprising:
- a disconnect shaft;
a gearbox shaft having a first end rotatably coupled to an accessory gearbox; and
a cup shaped journal shaft received over an opposing second end of the gearbox shaft, the cup shaped journal shaft configured to rotate together with the gearbox shaft, the cup shaped journal shaft further configured to selectively rotatably engage with the disconnect shaft to drive a rotor shaft of the gas turbine engine, wherein the cup shaped journal shaft includes walls extending along a rotational axis and a floor extending radially toward the axis past splines on the second end of the gearbox shaft.
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Abstract
An example gear arrangement includes a gearbox shaft and a journal shaft. The journal shaft establishes an opening that receives an end portion of the gearbox shaft. The gearbox shaft is configured to rotate the journal shaft. The journal shaft is configured to selectively rotatably couple with another shaft. The journal shaft is allowed to align to the bearing surface while the gearbox shaft allows for misalignment between the accessory and gearbox drive.
38 Citations
8 Claims
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1. A gas turbine engine gearbox arrangement, comprising:
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a disconnect shaft; a gearbox shaft having a first end rotatably coupled to an accessory gearbox; and a cup shaped journal shaft received over an opposing second end of the gearbox shaft, the cup shaped journal shaft configured to rotate together with the gearbox shaft, the cup shaped journal shaft further configured to selectively rotatably engage with the disconnect shaft to drive a rotor shaft of the gas turbine engine, wherein the cup shaped journal shaft includes walls extending along a rotational axis and a floor extending radially toward the axis past splines on the second end of the gearbox shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification