Bearing support assembly
A bearing support may include a central shaft, a flange shaft, and a tube boss. The central shaft may include a central longitudinal axis extending between a first end and a second end of the bearing support. The flange shaft may extend radially outward of the central shaft at an acute angle, relative to the central longitudinal axis from the first end to the second end, and the flange shaft may include a rim defining an aperture. The tube boss extends from the central shaft radially outward through the aperture, according to various embodiments. An annular channel may be between the rim and the tube boss.
1. A bearing support comprising:
a central shaft comprising a central longitudinal axis extending between a first end and a second end of the bearing support;
a flange shaft extending radially outward of the central shaft at an acute angle, relative to the central longitudinal axis from the first end to the second end, wherein the flange shaft comprises a rim defining an aperture; and
a tube boss extending from the central shaft radially outward through the aperture, wherein an annular channel is defined between the rim and the tube boss;
wherein:
the rim comprises a first side disposed toward and facing the first end of the bearing support;
the rim comprises a second side disposed toward and facing the second end of the bearing support;
the first side of the rim extends directly from the central shaft via a connector segment; and
the second side of the rim is floating relative to the central shaft such that a gap is defined between the second side and the central shaft.
2. The bearing support of claim 1 , wherein the central shaft and the flange shaft together form a unitary, integral structure.
3. The bearing support of claim 1 , wherein the tube boss comprises a centerline axis, wherein the tube boss and the annular channel are concentric about the centerline axis.
4. The bearing support of claim 1 , wherein the tube boss is a first tube boss, wherein the rim is a second tube boss.
5. The bearing support of claim 4 , wherein:
the second tube boss comprises the first side facing the first end of the bearing support;
the second tube boss comprises the second side facing the second end of the bearing support;
the first side of the second tube boss extends from the central shaft; and
the second side of the second tube boss is floating relative to the central shaft.
6. The bearing support of claim 1 , wherein the gap enables radial deflection of the flange shaft in response to load on the bearing support.
7. The bearing support of claim 1 , wherein:
a first cavity is defined within the central shaft;
a second cavity is defined between the central shaft and the flange shaft; and
a third cavity is defined radially outward of the flange shaft.
8. The bearing support of claim 7 , wherein the tube boss is configured to fluidly connect the first cavity to the third cavity.
9. The bearing support of claim 8 , wherein the annular channel is open to and extends between the second cavity and the third cavity.
10. The bearing support of claim 9 , wherein an annular sealing member is configured to be disposed within the annular channel to fluidly separate the second cavity from the third cavity.
11. A gas turbine engine comprising:
a bearing support comprising:
a central shaft extending around and along an engine central longitudinal axis of the gas turbine engine, wherein the bearing support comprises a first end and a second end;
a flange shaft extending radially outward of the central shaft at an acute angle, relative to the engine central longitudinal axis from the first end to the second end, wherein the flange shaft comprises a rim defining an aperture; and
a tube boss extending from the central shaft radially outward through the aperture, wherein an annular channel is defined between the rim and the tube boss; and
an annular sealing member disposed within the annular channel;
wherein one side of the rim is directly connected to the central shaft and an opposing side of the rim is floating relative to the central shaft such that a gap is defined between the opposing side and the central shaft.
12. The gas turbine engine of claim 11 , wherein the annular sealing member comprises a sleeve and a piston ring.
13. The bearing support of claim 11 , wherein:
a first cavity is defined within the central shaft;
a second cavity is defined between the central shaft and the flange shaft;
a third cavity is defined radially outward of the flange shaft;
the tube boss is configured to fluidly connect the first cavity to the third cavity; and
the annular sealing member is configured to fluidly separate the second cavity from the third cavity.
14. The gas turbine engine of claim 11 , wherein the tube boss comprises a centerline axis, wherein the tube boss and the annular channel are concentric about the centerline axis.
15. The gas turbine engine of claim 14 , wherein the tube boss is a first tube boss, wherein the rim is a second tube boss.
16. The gas turbine engine of claim 15 , wherein:
the second tube boss comprises the one side facing the first end of the bearing support; and
the second tube boss comprises the opposing side facing the second end of the bearing support.
17. The gas turbine engine of claim 16 , wherein the central shaft and the flange shaft together form a unitary, integral structure.