Bearing housing
AssigneePratt & Whitney Canada Corp.
InventorsGuy Lefebvre, Remy Synnott, François Doyon
Life of this patent
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Abstract
There is disclosed a bearing assembly for a gas turbine engine including at least two bearings axially spaced from one another relative to a central axis, and a squirrel cage secured to a casing of the gas turbine engine. The squirrel cage supports respective bearing loads of the at least two bearings. The squirrel cage has a frangible section between the bearings configured to preferentially fail upon application of a load greater than a preselected threshold bearing load.
Claims20
A bearing assembly for a gas turbine engine comprising at least two bearings axially spaced from one another relative to a central axis, and a squirrel cage secured to a casing of the gas turbine engine, the squirrel cage supporting respective bearing loads of the at least two bearings, wherein the squirrel cage has a frangible section between the bearings configured to preferentially fail upon application of a load greater than a preselected threshold bearing load.
A gas turbine engine, comprising a shaft rotatable about a central axis, the shaft at least partially supported by two bearings and a casing, the two bearings being axially spaced apart relative to the central axis, a squirrel cage extending between the two bearings having a reduced cross-section frangible section configured to fail upon application of a bearing load greater than a preselected threshold load.
A method of operating a bearing assembly, comprising:
- coupling a first bearing to a second bearing via a squirrel cage, the first and second bearings being axially spaced apart relative to a central axis;
- receiving a first load at the first bearing and a second load at the second bearing;
- and
- preferentially failing the squirrel cage at a frangible portion between the first and second bearings upon a preselected load differential between the first load and the second load.
Dependencies are inferred from the claim text.