Pratt-whitney Canada Corp

Pierre Gaudet

Patrice Remy

Jiemin Wang

The method of assembling the rotor assembly can include obtaining geometrical reference values about the individual rotor components, based on the geometrical reference values, determining a combination of relative circumferential positions of the individual rotor components associated to a bow shape configuration of the centers of mass along the axially-extending sequence; and assembling the rotor components to one another in said determined combination of relative circumferential positions, into the rotor assembly.

Rotor assembly, associated method of assembly, and computer program product therefor

A method of assembling a first part to a second part while applying thermal energy to at least one of the parts. The application of thermal energy is terminated when the first part and second part are in a completed assembly position relative to each other. The thermal energy absorbed by the at least one of: the first part; and the second part is then dissipated until the first part and second part are engaged in an interference fit.

In-situ heating/cooling tool for turbine assembly on a shaft

A method of validating a compressive axial preload on adjacent rotatable elements serially arranged around a shaft, created through application of a progressively increasing axial tension to a tensioning member configured to compress the elements when the axial tension is applied. The method includes monitoring a load in the tensioning member and/or in one or more of the elements, and an elongation of the tensioning member, during application of the axial tension, determining at least one validation parameter from the load and the elongation, comparing each validation parameter with a respective predetermined range therefor; and if at least one of the at least one validation parameter is out of the respective predetermined range, correcting the preload on the elements, and repeating the method. A method of applying the compressive preload and a system for validating the compressive preload are also described.

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Montreal, Canada

Pierre Gaudet