US 12,173,612 B2
Power turbine shaft with hub assembly for gas turbine engine
Kwok-Kwong B. Tse, San Diego, CA (US); and George L. Prater, San Diego, CA (US)
Assigned to Solar Turbines Incorporated, San Diego, CA (US)
Filed by Solar Turbines Incorporated, San Diego, CA (US)
Filed on Feb. 22, 2023, as Appl. No. 18/112,972.
Prior Publication US 2024/0280022 A1, Aug. 22, 2024
Int. Cl. F01D 5/02 (2006.01); F01D 17/06 (2006.01); F16D 1/08 (2006.01)
CPC F01D 5/025 (2013.01) [F01D 5/027 (2013.01); F01D 17/06 (2013.01); F16D 1/08 (2013.01); F05D 2220/32 (2013.01); F05D 2240/24 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A hub for a turbine shaft, the hub comprising:
a cylindrical main body that is open at a forward end and at least partially closed at an aft end along a longitudinal axis, wherein the aft end comprises a plurality of first axial apertures;
a middle portion extending outward from the main body, wherein the middle portion includes a plurality of trim-weight holes arranged circumferentially around the longitudinal axis, wherein each of the plurality of trim-weight holes is configured to hold a trim weight; and
a flange extending outward from the middle portion, wherein the flange includes a plurality of second axial apertures;
wherein the main body further comprises a plurality of engagement members arranged around a circumference of an inner surface of the main body.