Patent Number: 8,573,932

Title: Compressor blade root heating system

Abstract: The compressor blade root heating system may be formed from one or more induction heaters formed from one or more induction coils positioned in close proximity to a root of a compressor blade. In one embodiment, the induction heater may be coupled to a static casing component positioned immediately upstream of a first row of compressor blades on a rotor assembly such that the induction heater is stationary during turbine engine operation. The induction heater causes eddy current formation, which heats the row one compressor blades. This heating increases the fracture toughness of the material forming the rotor and compressor blades, thereby increasing the mechanical life cycle.

Inventors: Ross; Christopher W. (Oviedo, FL), Miller; Keith A. (Oviedo, FL)

Assignee: Siemens Energy, Inc.

International Classification: F01D 25/10 (20060101)

Expiration Date: 1/05/12017