US 12,071,858 B2
Fire retardant engine casing apparatus
Manish Singhal, Bengaluru (IN); Vishnu Das K, Bengaluru (IN); Sagar Pradhan, Bengaluru (IN); and Ravindra Shankar Ganiger, Bengaluru (IN)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed by GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed on Dec. 6, 2021, as Appl. No. 17/543,347.
Claims priority of application No. 202111046647 (IN), filed on Oct. 13, 2021.
Prior Publication US 2023/0111191 A1, Apr. 13, 2023
Int. Cl. F01D 25/24 (2006.01); F01D 5/28 (2006.01); F01D 25/00 (2006.01); F02C 7/25 (2006.01)
CPC F01D 25/24 (2013.01) [F01D 5/28 (2013.01); F01D 25/005 (2013.01); F02C 7/25 (2013.01); F05D 2230/31 (2013.01); F05D 2230/90 (2013.01); F05D 2240/14 (2013.01); F05D 2250/283 (2013.01); F05D 2300/133 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An engine casing comprising:
an inner shell circumferentially surrounding blades of a fan, a compressor, or a turbine;
an outer shell positioned around the inner shell;
a fire retardant material between the inner shell and the outer shell; and
an internal structure coupled to the inner shell and the outer shell, wherein a volumetric ratio of the internal structure and the fire retardant material between the inner shell and the outer shell is based on at least one of an area of implementation within an axial flow engine or a size of the axial flow engine.
 
10. An apparatus comprising:
means for producing aerodynamic forces;
a casing positioned around the means for producing aerodynamic forces, the casing including a cavity between an inner radial surface of the casing and an outer radial surface of the casing;
means for retarding fire inside the cavity; and
means for providing structural support coupled to the inner radial surface and the outer radial surface, wherein a volumetric ratio of the means for providing structural support and the means for retarding fire within the cavity is based on at least one of an area of implementation of the casing in an axial flow engine or a size of the axial flow engine.