F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 7/00 (2006.01) F01D 5/06 (2006.01) F01D 5/08 (2006.01) F01D 25/00 (2006.01) F16B 35/00 (2006.01)
Patent
CA 2364768
Rotor disk stress is reduced in a bolted joint (52) for connecting adjacent rotor disks in a gas turbine engine (10). The bolted joint (52) includes a bolt hole (70) formed in the first rotor disk (40) and a tube (82) disposed in the bolt hole (70) such that a channel (84) is defined between the tube (82) and the bolt hole (70). A bolt (66) is disposed in the tube (82) such that a gap (88) is defined between the bolt (66) and the tube (82). The gap (88) thermally insulates the bolt (66) from hot fluid in the channel (84). A first passage (96) provides fluid communication between the channel (84) and a forward cavity, and a second passage (98) provides fluid communication between the channel (84) and an aft cavity. Hot fluid passing through the channel (84) reduces thermal gradients in the first rotor disk (40). The tube (82) thermally shields the bolt (66) from the hot fluid to minimize differential thermal growth.
Ebert Todd Alan
Pepi Jason Francis
Company General Electric
Craig Wilson And Company
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