Methods, systems and/or apparatus relating to frequency-tuned turbine blades
OwnerSiddaraja M. Devangada, Ravindra Kumarinventors
Life of this patent
Estimating the term…
Abstract
A method of tuning a compressor stator blade, having a base portion and an airfoil portion, to achieve a desired natural frequency, comprising: a) identifying the natural frequency of the compressor stator blade; b) determining a different target natural frequency for the compressor stator blade; and c) removing material from at least one of the side surfaces of the base portion of the compressor stator blade in an amount and in a configuration that achieves the target natural frequency.
Claims20
A method of tuning a compressor stator blade, having a base portion and an airfoil portion, to achieve a desired natural frequency, comprising:
- a) identifying the natural frequency of the compressor stator blade;
- b) determining a different target natural frequency for the compressor stator blade;
- and
- c) removing material from at least one of the side surfaces of the base portion of the compressor stator blade in an amount and in a configuration that achieves the target natural frequency.
A compressor stator blade that includes an airfoil portion and a base portion that is substantially rectangular with side surfaces that include a pressure side, a suction side, a leading face and a trailing face, and a radially inner surface and a radially outer surface, the compressor stator blade comprising at least one groove formed in at least one the side surfaces that is configured such that the compressor stator blade has a desired natural frequency.
Dependencies are inferred from the claim text.