Patent ID: 9677423
Date: 2017-06-13
CPC Classifications: F01D,F05D

Claim:
1. An aft hub sealing assembly for a gas turbine engine, the aft hub sealing assembly comprising: an aft hub including a bearing assembly housing; a bearing assembly located radially inward from the bearing assembly housing and connected to the bearing assembly housing, the bearing assembly supporting the aft hub at the body portion; a bearing cap axially forward of the bearing assembly housing, the bearing cap including an air shield axially forward of the bearing cap, the air shield including an aft baffle located between the air shield and the disk portion, the aft baffle including a baffle forward surface facing the disk portion aft surface, the baffle forward surface generally following a contour of the disk portion aft surface and configured to reduce windage heating of compressed gas flowing axially aft of the aft hub; a first seal disposed between the bearing cap inner portion forward end and the body portion; a second seal disposed between the bearing cap inner portion aft end and the body portion; and a third seal disposed between the air shield inner flange and the body portion.