Locking spacer assembly

A rotor assembly, comprising:

• a rotor disk comprising forward and aft posts defining a continuous circumferentially extending attachment slot;
• a plurality of rotor blades, each of the plurality of rotor blades extending from one of a plurality of platforms, wherein each of the plurality of platforms is secured to the attachment slot by an inwardly extending root;
• and
• a locking spacer assembly disposed in a space between at least two of the plurality of platforms, the locking spacer assembly comprising:
• a first end piece configured to fit into the space between the platforms of the adjacent rotor blades, the first end piece comprising a platform portion and a root portion, the platform portion and the root portion defining a first inner surface, the root portion defining a first projection and an opposing second projection, the first projection having an outer profile adapted to project into a first lateral recess of the attachment slot and the second projection having an outer profile adapted to project into a second lateral recess of the attachment slot;
• a second end piece configured to fit between the first inner surface of the first end piece and a sidewall portion of the attachment slot, the second end piece having a platform portion and a root portion;
• a borehole that extends continuously through the first end piece and the second end piece;
• and
• a fastener that extends through the borehole, wherein one end of the fastener engages with a sidewall portion of the attachment slot.

A turbomachine, comprising:

• a compressor;
• a combustor;
• a turbine;
• and
• wherein at least one of the compressor or the turbine comprises:
• a rotor disk comprising forward and aft posts defining a continuous circumferentially extending attachment slot;
• a plurality of rotor blades, each of the plurality of rotor blades extending from one of a plurality of platforms, wherein each of the plurality of platforms is secured to the attachment slot by an inwardly extending root;
• and
• a locking spacer assembly disposed in a space between at least two of the plurality of platforms, the locking spacer assembly comprising:
• a first end piece configured to fit into the space between the platforms of the adjacent rotor blades, the first end piece comprising a platform portion and a root portion, the platform portion and the root portion defining a first inner surface, the root portion defining a first projection and an opposing second projection, the first projection having an outer profile adapted to project into a first lateral recess of the attachment slot and the second projection having an outer profile adapted to project into a second lateral recess of the attachment slot;
• a second end piece configured to fit between the first inner surface of the first end piece and a sidewall portion of the attachment slot, the second end piece having a platform portion and a root portion;
• a borehole that extends continuously through the first end piece and the second end piece;
• and
• a fastener that extends through the borehole, wherein one end of the fastener engages with a sidewall portion of the attachment slot.