Composite containment casings having an integral fragment catcher

A composite containment casing comprising:

• a body having an interior;
• a fragment catcher integrally joined to the interior of the body of the containment casing;
• an abradable system integrally joined to the interior of the body of the containment casing such that the fragment catcher is positioned in a forward orientation in the containment casing with respect to the abradable system, the abradable system comprising:
• a sandwich structure including:
• a first facesheet and a second facesheet position about at least one core layer;
• and
• at least one abradable layer applied to the sandwich structure
• wherein the at least one core layer comprises any of a cell configuration, a columnar configuration, or a truss configuration and wherein the sandwich structure is strong radially and weak circumferentially.

A gas turbine engine fan assembly comprising a composite containment casing having:

• a body having an interior;
• a fragment catcher integrally joined to the interior of the body of the containment casing;
• an abradable system integrally joined to the interior of the body of the containment casing such that the fragment catcher is positioned in a forward orientation in the containment casing with respect to the abradable system, the abradable system comprising:
• a sandwich structure including a first facesheet and a second facesheet position about at least one core layer;
• and
• at least one abradable layer applied to the sandwich structure
• wherein the at least one core layer comprises any of a cell configuration, a columnar configuration, or a truss configuration and wherein the sandwich structure is strong radially and weak circumferentially.