Locking spacer assembly

A rotor assembly, comprising:

• a rotor disc 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 a space between platforms of the adjacent rotor blades, the first end piece comprising an outer surface, an inner surface, and a first plane oriented generally perpendicular to a radial direction, the outer surface having a profile adapted to project into the attachment slot;
• a second end piece configured to fit into the space between the platforms, the second end piece comprising an outer surface, an inner surface, and a second plane oriented generally perpendicular to the radial direction, the outer surface having a profile adapted to project into the attachment slot, wherein the inner surfaces of the first and second end pieces generally face each other;
• an actuator movable between the inner surfaces, the actuator comprising a projection, the projection comprising a first surface and a second surface formed on the projection that respectively engage the first plane and the second plane, the first and second surfaces generally perpendicular to the radial direction;
• and
• a recess defined laterally between the first surface and the second surface, radially between the first plane and the projection, and radially between the second plane and the projection.

A turbomachine, comprising:

• a compressor section;
• a turbine section;
• and
• a combustor section between the compressor section and the turbine section,
• wherein one of the compressor section or the turbine section comprises:
• a rotor disc 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 a space between platforms of the adjacent rotor blades, the first end piece comprising an outer surface, an inner surface, and a first plane oriented generally perpendicular to a radial direction, the outer surface having a profile adapted to project into the attachment slot;
• a second end piece configured to fit into the space between the platforms, the second end piece comprising an outer surface, an inner surface, and a second plane oriented generally perpendicular to the radial direction, the outer surface having a profile adapted to project into the attachment slot, wherein the inner surfaces of the first and second end pieces generally face each other;
• an actuator movable between the inner surfaces, the actuator comprising a projection, the projection comprising a first surface and a second surface formed on the projection that respectively engage the first plane and the second plane, the first and second surfaces generally perpendicular to the radial direction;
• and
• a recess defined laterally between the first surface and the second surface, radially between the first plane and the projection, and radially between the second plane and the projection.