Mistuning of turbine blades with one or more internal cavities

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11319815
APP PUB NO 20210010375A1
SERIAL NO

17040222

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Abstract

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A bladed rotor system includes first and second sets of blades with respective airfoils each having at least one internal cavity. The airfoils of both the first and second sets of blades have identical outer shapes defined by an outer surface of an outer wall of the respective airfoils. The airfoils of the first set of blades are distinguished from the airfoils of the second set of blades by a geometry and/or position of at the least one internal cavity, which is unique to blades of a given set. The natural frequency of a blade of the first set differs from the natural frequency of a blade of the second set by a predetermined amount. The blades of the first set and the second set are alternately arranged in a periodic fashion in said circumferential row, to provide a frequency mistuning to stabilize flutter of the blades.

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Patent Owner(s)

Patent OwnerAddress
SIEMENS ENERGY GLOBAL GMBH & CO KGOTTO-HAHN-RING 6 MÜNCHEN 81739

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eshak, Daniel M Orlando, US 12 85
Kamenzky, Susanne Berlin, DE 9 11
Miller,, Jr Samuel R Port St. Lucie, US 11 57
Schmitt, Stefan Mülheim an der Ruhr, DE 80 587
Stüer, Heinrich Haltern, DE 8 25
Vöhringer, Daniel Berlin, DE 8 9
Zhou, Yuekun Charlotte, US 5 11

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