Abstract: Various embodiments include a rotor having a dovetail slot with a bulbous fillet region, and in some cases, recessed inclined bearing surfaces. Various embodiments include methods of forming such a slot in a turbomachine rotor.

Abstract: A load coupling for adjusting torsional natural frequency of a power train includes a first flange having a plurality of annularly arranged connecting holes, a second flange having a plurality of annularly arranged connecting holes and a shaft that extends between the first flange and the second flange. A threaded bore hole is defined within one of the first flange or the second flange radially outward from the plurality of connecting holes. A first threaded plug is seated within the threaded bore hole. The first threaded plug includes a turning end that is axially separated from a contact end. A second threaded plug is seated within the threaded bore hole. The second threaded plug includes a turning end that is axially separated from a contact end. The contact end of the first threaded plug is axially loaded against the contact end of the second threaded plug.

Abstract: A load coupling for adjusting torsional natural frequency of a power train includes a first flange having a plurality of annularly arranged connecting holes, a second flange having a plurality of annularly arranged connecting holes and a shaft that extends between the first flange and the second flange. A threaded bore hole is defined within one of the first flange or the second flange radially outward from the plurality of connecting holes. A first threaded plug is seated within the threaded bore hole. The first threaded plug includes a turning end that is axially separated from a contact end. A second threaded plug is seated within the threaded bore hole. The second threaded plug includes a turning end that is axially separated from a contact end. The contact end of the first threaded plug is axially loaded against the contact end of the second threaded plug.

Abstract: A turbomachine is provided and includes a blade wheel having an outer radial portion defining first and second nested pockets, a blade having a root section, which is receivable in the first pocket and thereby securable in the first pocket in circumferential and radial dimensions and an insert, which is receivable in the second pocket and configured to secure the root section in an axial dimension with positive retention.

Abstract: Various embodiments include a rotor having a dovetail slot with a bulbous fillet region, and in some cases, recessed inclined bearing surfaces. Various embodiments include methods of forming such a slot in a turbomachine rotor.

Abstract: A clocking bar includes a rod and an indicator located along a length of the rod, wherein the indicator has a pair of indication components with a predetermined spacing therebetween. The bar also includes a hole one locator located along the length of the rod, and a rear hole locator located along the length of the rod. The clocking bar is configured to identify a stack bolt hole one from among a plurality of bolt holes on a rotor through use of a relationship between physical features of the rotor.

Abstract: A first plate includes an opening configured to be placed over a blade of a first rotor. A second plate includes an opening configured to be placed over a blade of a second rotor. Each plate includes a first pin configured to contact a leading edge of a blade located on one side of the blade in the opening and a second pin configured to contact a leading edge of a blade located on an opposite side of the blade in the opening, and a third pin configured to contact a leading edge of the blade in the opening. An indicator line is marked on the first plate and a pair of boundary lines marked on the second plate are spaced apart a distance indicative of an acceptable range for blade clocking between the first and second rotors when the indicator line is located between the boundary lines.

Abstract: A first plate includes an opening configured to be placed over a blade of a first rotor. A second plate includes an opening configured to be placed over a blade of a second rotor. Each plate includes a first pin configured to contact a leading edge of a blade located on one side of the blade in the opening and a second pin configured to contact a leading edge of a blade located on an opposite side of the blade in the opening, and a third pin configured to contact a leading edge of the blade in the opening. An indicator line is marked on the first plate and a pair of boundary lines marked on the second plate are spaced apart a distance indicative of an acceptable range for blade clocking between the first and second rotors when the indicator line is located between the boundary lines.

Abstract: A clocking bar includes a rod and an indicator located along a length of the rod, wherein the indicator has a pair of indication components with a predetermined spacing therebetween. The bar also includes a hole one locator located along the length of the rod, and a rear hole locator located along the length of the rod. The clocking bar is configured to identify a stack bolt hole one from among a plurality of bolt holes on a rotor through use of a relationship between physical features of the rotor.