초록 ▼

A combustion chamber for a gas turbine engine comprising at least one Helmholtz resonator having a resonator cavity and a resonator neck in flow communication with the interior of the combustion chamber. The cavity extends around at least part of the neck and is spaced apart therefrom to define a co

A combustion chamber for a gas turbine engine comprising at least one Helmholtz resonator having a resonator cavity and a resonator neck in flow communication with the interior of the combustion chamber. The cavity extends around at least part of the neck and is spaced apart therefrom to define a cooling chamber therebetween. The cooling chamber allows the neck and the cavity to be cooled with a flow of cooling air. The sunken neck allows the resonator to be located within enclosures with minimal volume without compromising on the damping properties afforded.

대표청구항 ▼

We claim: 1. A combustion chamber for a gas turbine engine comprising at least one Helmholtz resonator having a resonator cavity and a resonator neck in flow communication with the interior of the combustion chamber, wherein the cavity extends around at least part of the neck and is spaced apart th

We claim: 1. A combustion chamber for a gas turbine engine comprising at least one Helmholtz resonator having a resonator cavity and a resonator neck in flow communication with the interior of the combustion chamber, wherein the cavity extends around at least part of the neck and is spaced apart therefrom to define a cooling chamber therebetween. 2. A combustion chamber according to claim 1, wherein the neck and the cooling chamber are coaxial. 3. A combustion chamber according to claim 1, wherein the cooling chamber is annular. 4. A combustion chamber according to claim 1, wherein the cooling chamber has a closed end and an open end. 5. A combustion chamber according to claim 4, wherein the closed end has at least one purging hole that in use directs a flow of purging air into the cavity. 6. A combustion chamber according to claim 4, wherein the open end has at least one cooling hole that directs a flow of cooling air from the cooling chamber into the resonator neck. 7. A Helmholtz resonator for use in a combustion chamber of a gas turbine engine, having a resonator cavity and a resonator neck, wherein the cavity extends around at least part of the neck and is spaced apart therefrom to define a cooling chamber therebetween.