Air turbine starter with containment assembly

The air turbine starter of claim 23, further comprising:

• a drive shaft coupled to the turbine member;
• an output gear assembly rotatably coupled to the drive shaft, wherein the drive shaft provides a rotational output to the output gear assembly;
• and
• an output shaft operably coupled to the turbine member by the output gear assembly, wherein the output shaft is operably coupled to a turbine engine, wherein the output shaft rotates a portion of the turbine engine.

An air turbine starter comprising:

• a housing defining an interior, wherein the housing includes a primary inlet and a primary outlet to define a primary air flow path from the primary inlet to the primary outlet;
• a rotatable turbine member comprising a plurality of circumferentially spaced blades extending into the primary air flow path;
• a containment assembly coupled to the housing and circumscribing at least a portion of the plurality of circumferentially spaced blades, the containment assembly comprising:
• a first ring including a set of projections extending radially from the first ring;
• and
• a second ring concentrically arranged with the first ring and including a set of recesses geometrically complementary to the set of projections, the set of projections extending into the set of recess such that the first ring and the second ring are mechanically interlocked.

An air turbine starter comprising:

• a housing defining an interior, wherein the housing includes a primary inlet and a primary outlet to define a primary air flow path from the primary inlet to the primary outlet;
• a rotatable turbine member comprising a plurality of circumferentially spaced blades defining an axis of rotation and extending into the primary air flow path;
• and
• a containment assembly coupled to the housing and circumscribing at least a portion of the plurality of circumferentially spaced blades, the containment assembly comprising:
• a first annular ring having a first inner surface and a first outer surface;
• a second annular ring concentrically arranged with the first annular ring, the second annular ring having a second inner surface and a second outer surface, wherein the second outer surface confronts the first inner surface;
• a set of protrusions extending towards the axis of rotation from the first inner surface;
• a set of recesses defined by the second outer surface, wherein the set of recesses is complimentary to the set of protrusions;
• and
• a mechanical surface interlock securing together the first annular ring and the second annular ring, wherein the mechanical surface interlock is defined by at least the set of protrusions and the set of recesses.