Fan blade retainer

A gas turbine engine blade retainer comprising:

• a block,
• a retainer slot disposed through said block,
• a shelf normal to and extending axially forward of said block below said retainer slot,
• a retainer wall depending radially inwardly from said block,
• said retainer wall having a retainer wall thickness smaller than a block thickness of said block,
• said shelf disposed along a radially inner edge of said retainer wall, and
• said retainer slot disposed through said retainer wall along said shelf.

A gas turbine engine rotor disk assembly comprising:

• a number of annular hubs circumscribed about a centerline;
• each of said hubs connected to a disk rim by a web;
• a plurality of circumferentially spaced apart dovetail slots disposed through said rim, extending circumferentially between disk posts, extending axially from a forward end to an aft end of said rim, and extending radially inwardly from a disk outer surface of said rim;
• a plurality of fan blades having dovetail roots disposed in said dovetail slots;
• a plurality of blade spacers each of which is disposed within each of said dovetail slots between a dovetail slot bottom wall and an axially extending root bottom surface of said dovetail root;
• pairs of circumferentially oppositely facing retaining slots extend through overhangs of circumferentially adjacent pairs of said disk posts at an axial location where said overhangs begin extending axially forward from said rim;
• retainers disposed in said pairs of retaining slots;
• said retainers extending across said dovetail slot so as to axially retain said dovetail roots in said dovetail slots;
• each of said retainers comprising:
• a block,
• a retainer slot disposed through said block,
• a shelf normal to and extending axially forward of said block below said retainer slot,
• each of said retainers radially supported by a spacer tab, and
• said spacer tab extending generally axially forward from said spacer and disposed through said retainer slot.

A gas turbine engine rotor disk assembly comprising:

• a number of annular hubs circumscribed about a centerline;
• each of said hubs connected to a disk rim by a web;
• a plurality of circumferentially spaced apart dovetail slots disposed through said rim, extending circumferentially between disk posts, extending axially from a forward end to an aft end of said rim, and extending radially inwardly from a disk outer surface of said rim;
• a plurality of fan blades having dovetail roots disposed in said dovetail slots;
• a plurality of blade spacers each of which is disposed within each of said dovetail slots between a dovetail slot bottom wall and an axially extending root bottom surface of said dovetail root;
• pairs of circumferentially oppositely facing retaining slots extend through overhangs of circumferentially adjacent pairs of said disk posts at an axial location where said overhangs begin extending axially forward from said rim;
• retainers disposed in said pairs of retaining slots;
• said retainers extending across said dovetail slots so as to axially retain said dovetail roots in said dovetail slots;
• each of said retainers comprising:
• a block,
• a retainer slot disposed through said block,
• a shelf normal to and extending axially forward of said block below said retainer slot,
• each of said retainers radially supported by a spacer tab, and
• said spacer tab extending generally axially forward from said spacer and disposed through said retainer slot.