Fire retardant engine casing apparatus
AssigneeGeneral Electric Company
InventorsManish Singhal, Vishnu Das K, Sagar Pradhan, Ravindra Shankar Ganiger
Life of this patent
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Abstract
Fire retardant engine casing apparatus are disclosed. An example engine casing includes an inner shell circumferentially surrounding blades of a fan, a compressor, or blades of a turbine, the inner shell including perforations to receive acoustic waves, an outer shell positioned around the inner shell, a fire retardant material between the inner shell and the outer shell, and a screen positioned between an outer radial end of the perforations and the fire retardant material.
Claims21
An engine casing comprising:
- an inner shell circumferentially surrounding blades of a fan, a compressor, or blades of a turbine, the inner shell including perforations to receive acoustic waves;
- an outer shell positioned around the inner shell;
- a fire retardant material between the inner shell and the outer shell;
- and
- a screen in contact with an outer radial surface of the inner shell and positioned between an outer radial end of the perforations and the fire retardant material.
An axial flow engine casing comprising:
- an inner shell including perforations to receive acoustic waves;
- an outer shell positioned around the inner shell;
- a fire retardant material between the inner shell and the outer shell, wherein the fire retardant material is in contact with at least one of an outer radial surface of the inner shell or an inner radial surface of the outer shell;
- and
- a screen positioned between the perforations and the fire retardant material.
An apparatus comprising:
- means for producing aerodynamic forces;
- means for circumferentially surrounding positioned around the means for producing aerodynamic forces, the means for circumferentially surrounding including a cavity between an inner radial surface of the means for circumferentially surrounding and an outer radial surface of the means for circumferentially surrounding, the inner radial surface including means for receiving acoustic waves;
- means for retarding fire inside the cavity;
- and
- means for screening positioned between the means for retarding fire and the means for receiving acoustic waves to inhibit at least one of (i) the means for retarding fire from flowing through the means for receiving acoustic waves or (ii) the means for retarding from oxidizing from airflow produced by the means for producing aerodynamic forces.
An engine casing comprising:
- an inner shell circumferentially surrounding blades of a fan, a compressor, or blades of a turbine, the inner shell including perforations to receive acoustic waves;
- an outer shell positioned around the inner shell;
- a fire retardant material between the inner shell and the outer shell, wherein the fire retardant material defines between 60-80% of a volume between the inner shell and the outer shell;
- and
- a screen positioned between an outer radial end of the perforations and the fire retardant material.
Dependencies are inferred from the claim text.