Containment system for gas turbine engine

A containment system for a gas turbine engine, comprising:

• an outer containment ring having a plurality of first projections spaced apart about a perimeter of the outer containment ring to define a plurality of first reliefs, and each of the plurality of first projections extend radially inward;
• an inner containment ring having a plurality of second projections spaced apart about a perimeter of the inner containment ring, the plurality of second projections including a first sub-ring of the plurality of second projections and at least a second sub-ring of the plurality of second projections, at least one second projection of the first sub-ring is misaligned with at least one second projection of the at least second sub-ring about a circumference of the inner containment ring, each of the plurality of second projections extend radially outward toward the outer containment ring, and a chamber is defined between the outer containment ring and the inner containment ring in a first state;
• and
• a porous lattice defined within the chamber that spans the chamber, the lattice integrally formed with each of the outer containment ring and the inner containment ring to extend about the perimeter of the inner containment ring and a density of the lattice varies in at least one of an axial direction and a radial direction,
• wherein at least one of the plurality of second projections is configured to interlock with at least one of the plurality of first projections in a second state.

A gas turbine engine, comprising:

• a rotating component;
• a containment system positioned about the rotating component, the containment system including:
• an outer containment ring having a first surface opposite a second surface, a first end opposite a second end, and at least a first projection that extends radially inward from the second surface;
• an inner containment ring having a third surface opposite a fourth surface, a third end opposite a fourth end, and a plurality of second projections that each extend radially outward from the third surface toward the second surface of the outer containment ring, the plurality of second projections including a first sub-ring of the plurality of second projections and at least a second sub-ring of the plurality of second projections, at least one second projection of the first sub-ring is misaligned with at least one second projection of the second sub-ring about a circumference of the inner containment ring, and a chamber is defined between the second surface and the third surface that extends from the first end and the third end to the second end and the fourth end, respectively, in a first state;
• and
• a porous lattice defined within the chamber that spans the chamber, the lattice integrally formed with each of the outer containment ring and the inner containment ring to extend between the second surface and the third surface, and from the first end and the third end to the second end and the fourth end, the lattice surrounds the at least first projection and the plurality of second projections within the chamber,
• wherein at least one of the plurality of second projections is configured to interlock with the at least first projection in a second state.