US 11,674,395 B2
Turbomachine rotor disk with internal bore cavity
Nicholas Joseph Kray, West Chester, OH (US); and Nitesh Jain, Bangalore (IN)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed on Sep. 17, 2020, as Appl. No. 17/24,212.
Prior Publication US 2022/0082022 A1, Mar. 17, 2022
Int. Cl. F01D 5/08 (2006.01); B33Y 80/00 (2015.01); B23P 6/00 (2006.01)
CPC F01D 5/08 (2013.01) [B23P 6/007 (2013.01); B33Y 80/00 (2014.12)] 17 Claims
OG exemplary drawing
 
1. A rotor disk for a gas turbine engine, comprising:
a disk body having a central bore extending therethrough, the disk body comprising a bore body that extends around the central bore, a web that extends radially outward from the bore body having decreased thickness relative to the bore body and a peripheral rim that is located at a radially outer end of the web, the peripheral rim comprising blade mounting structures disposed radially outward of the web and configured to engage complementary mounting structures of rotor blades;
the bore body having a bore cavity that is enclosed by the bore body and that extends continuously through the bore body and about an entire periphery of the central bore, the bore cavity having a central axis that forms a circle about the central bore; and
at least one bleed passage that intersects the bore cavity, the at least one bleed passage including an inner end that intersects the bore cavity and an outer end that intersects an outer surface of the bore body;
wherein the at least one bleed passage extends outward from the bore cavity in a direction toward an outer terminus of the bore body such that the bleed passage extends radially beyond the bore cavity and intersects the outer surface of the bore body closer to the outer terminus than to the bore cavity.
 
15. A method of forming a rotor disk for a gas turbine engine, the method comprising:
selecting a three-dimensional computer model of the rotor disk; printing the rotor disk using the three-dimensional model, the rotor disk, once printed, comprising:
a disk body having a central bore extending therethrough, the disk body comprising a bore body that extends around the central bore, a web that extends radially outward from the bore body having decreased thickness relative to the bore body and a peripheral rim that is located at a radially outer end of the web, the peripheral rim comprising blade mounting structures disposed radially outward of the web and configured to engage complementary mounting structures of rotor blades;
the bore body having a bore cavity that extends continuously through the bore body and about an entire periphery of the central bore, the bore cavity is at least about 25 percent of a cross-sectional area of the bore body, wherein the cross-sectional area is taken in a cross-sectional plane perpendicular to a central axis of the bore cavity and extends radially; and
at least one bleed passage that intersects the bore cavity, the at least one bleed passage including an inner end that intersects the bore cavity and an outer end that intersects an outer surface of the bore body;
wherein the at least one bleed passage extends outward from the bore cavity in a direction toward an outer terminus of the bore body such that the bleed passage extends radially beyond the bore cavity and intersects the outer surface of the bore body closer to the outer terminus than to the bore cavity.