Solar Turbines Inc.

Cory Patrick Muscat

Gary Paul Vavrek

James Eric Miller

Laura Elizabeth McDonald

Dover M Fernandez

James A Barber

A method for balancing a compressor rotor assembly including a forward weldment () and an aft weldment () includes pre-balancing the aft weldment () of the compressor rotor assembly () with compressor disks () prior to populating the compressor disks () with circumferentially installed compressor rotor blades (). Pre-balancing the aft weldment () includes measuring a rotational balance of the aft weldment (). Pre-balancing the aft weldment () also includes determining a number of underplatform weights () needed and a location for each underplatform weight () within a circumferential slot () of one the compressor disks (). Pre-balancing the aft weldment () further includes mounting each underplatform weight () in the determined location.

Gas turbine engine compressor rotor assembly and balancing system

A first stage compressor disk of a gas turbine engine includes a body. The body includes a forward end, an aft end, and an outer surface. The body also includes a plurality of forward balancing holes through the outer surface. The forward balancing holes align circumferentially about the body. The body further includes a plurality of aft balancing holes through the outer surface. The aft balancing holes align circumferentially about the body and are located aft of the forward balancing holes. The first stage compressor disk also includes a radial flange at the aft end of the body. The radial flange extends radially outward from the body. The radial flange includes slots for mounting airfoils.

First stage compressor disk configured for balancing the compressor rotor assembly

A method for balancing a rotating assembly of a gas turbine engine includes removing a stator vane from a section of the gas turbine engine. Removing the stator vane provides access to a rotating assembly of the gas turbine engine. The method further includes at least one of adding, removing, and repositioning a weight with respect to the rotating assembly via access to the rotating assembly provided by removing the stator vane.

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Poway, CA, United States of America

Cory Patrick Muscat