Patent ID: 8689933

Claim:
A resonator with an adaptable resonator frequency for absorbing sound generated by a gas stream of a gas turbine, the resonator comprising: a neck section, a chamber, and a deformable element being deformable under influence of a change of a gas turbine temperature, wherein the deformable element is a bimetallic element and forms a spiral, wherein the shape of the deformable element is predetermined with respect to a respective gas turbine temperature, wherein the neck section and the chamber form a volume of the resonator, wherein the neck section forms a passage coupling the volume with the gas turbine, wherein the deformable element is thermally coupleable to the gas turbine in such a way that the shape of the deformable element depends on the respective gas turbine temperature, wherein the deformable element is installed in the neck section in such a way that an effective diameter of the neck section depends on the gas turbine temperature, and wherein a shape of the spiral depends on the respective gas turbine temperature for selectively adapting the effective diameter of the neck section.