US 12,253,026 B1
Rear bearing air sourced and vented to nose cone
Paul R. Hanrahan, Sedona, AZ (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Apr. 12, 2023, as Appl. No. 18/133,709.
Int. Cl. F02C 7/18 (2006.01); F02C 7/06 (2006.01)
CPC F02C 7/06 (2013.01) [F02C 7/18 (2013.01); F05D 2260/205 (2013.01); F05D 2260/98 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A rear bearing air cooling system comprising:
an engine inlet section housing a nose cone;
a central rotor shaft interior of the nose cone;
a central static tube disposed within the central rotor shaft;
a rear bearing supporting the central rotor shaft; and
a cooling air passage formed through the nose cone and the central rotor shaft, the cooling air passage in fluid communication with the nose cone, the rear bearing and a nose cone vent.