General Electric Company

Stephen Wayne Tefft

Theodore Robert Grossman

Paul Stephen Manicke

James Robert Reinhardt

Tag Allen Koenig

Paul Charles Madix

Roswitha Sue Ann Schneider

A rotating structure of a gas turbine engine is provided by furnishing a rotor disk comprising a hub with a plurality of hub slots in a periphery of the hub, each hub slot having a hub slot surface, and furnishing a plurality of rotor blades. Each rotor blade includes an airfoil, and a root at one end of the airfoil, with the root being shaped and sized to be received in one of the hub slots of the rotor disk. A protective coating is deposited by a wire spray process at a location which will be, upon assembly, disposed between the root of each rotor blade and the respective hub slot surface. The protective coating is a protective alloy having, in weight percent, from about 6.0 to about 8.5 percent aluminum, from 0 to about 0.5 percent manganese, from 0 to about 0.2 percent zinc, from 0 to about 0.1 percent silicon, from 0 to about 0.1 percent iron, from 0 to about 0.02 percent lead, remainder copper and impurities. The rotor blades are assembled into the hub slots of the rotor disk to form the rotating structure, which is then operated at a temperature such that the root is at a temperature of from about 75&deg; F. to about 350&deg; F.

Method for providing a rotating structure having a wire-arc-sprayed aluminum bronze protective coating thereon

A deposit is formed on a deposition substrate using a deposition gun that bums a mixture of a fuel and an oxidizer to form a deposition gas flow, mixes a powder into the deposition gas flow to form a deposition mixture flow, and projects the deposition mixture flow therefrom. The deposition gun is provided with a flowing coolant. A flow rate of the fuel to the deposition gun, a flow rate of the oxidizer to the deposition gun, a flow rate of the powder to the deposition gun, and a cooling capacity of the coolant flow are all measured. The flow rate of the fuel, the flow rate of the oxidizer, the flow rate of the powder, and the cooling capacity of the coolant flow are all controlled responsive to the step of measurements.

High-temperature powder deposition apparatus and method utilizing feedback control

A system and method of using at least one computer to construct a technical plan for a specific process. The invention includes providing a rule-based logic model for the specific process and inputting data relating to the specific process. The data is compared to the logic model to identify exceptions in the data to rules in the logic model. The data are formatted into a technical plan that includes the exceptions. The technical plan is then outputted for review.

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Cincinnati, OH, United States of America

Stephen Wayne Tefft