Claims
- 1. A bladed rotor, comprising:
a hub having a main body with peripheral slots, each slot having an opening, the hub also having radially inner and outer bayonet hooks cooperating with the main body to define an annulus; a plurality of blades each having an attachment occupying one of the slots; a load transfer element adjacent the blade attachments; a bayonet ring having radially inner and outer bayonet projections, the bayonet ring also occupying the annulus with the bayonet projections engaging the bayonet hooks; and a lock secured to the hub to resist rotation of the bayonet ring relative to the hub.
- 2. The bladed rotor of claim 1 wherein the load transfer element is a snap ring occupying the annulus adjacent the blade attachments.
- 3. The bladed rotor of claim 1 comprising a spacer occupying each slot radially inboard of the blade attachment.
- 4. The bladed rotor of claim 3 wherein the load transfer element is a radially projecting flange on the spacer.
- 5. The bladed rotor of claim 4 wherein the flange occupies the annulus.
- 6. The bladed rotor of claim 1 wherein the inner bayonet hooks are circumferentially offset from the outer bayonet hooks.
- 7. The bladed rotor of claim 1 wherein the lock is a retainer ring bolted to the hub and having a plurality of tabs that project axially into spaces between adjacent inner projections on the bayonet ring.
- 8. The bladed rotor of claim 1 wherein the slots are curved.
- 9. The bladed rotor of claim 1 wherein the hub is a fan hub for a turbine engine and the blades are fan blades.
- 10. A bladed rotor, comprising:
a hub having a main body with peripheral slots, each slot having an opening, the hub also having radially inner and outer bayonet hooks cooperating with the main body to define an annulus, the inner bayonet hooks being circumferentially offset from the outer bayonet hooks; a plurality of blades each having an attachment occupying one of the slots; a spacer occupying each of the slots radially inboard of the blade attachment; a snap ring occupying the annulus adjacent the blade attachments; a bayonet ring having radially inner and outer bayonet projections, the bayonet ring also occupying the annulus with the bayonet projections engaging the bayonet hooks; and a retainer ring bolted to the hub, the retainer ring including a plurality of tabs that project axially into spaces between adjacent inner projections on the bayonet ring to resist rotation of the bayonet ring relative to the hub.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application includes subject matter in common with co-pending application Ser. Nos. ______ entitled “Chamfered Attachment for a Bladed Rotor”, docket number EH-10469 and “Bladed Rotor with a Tiered Blade to Hub Interface”, docket number EH-10560, both filed concurrently herewith, all three applications being assigned to or under obligation of assignment to United Technologies Corporation.