Claims
- 1. A damper for damping vibrations in blades of a turbine rotor including a disk and blade platforms, said damper comprising:
- a retainer for attaching to the disk of the rotor blades, said retainer comprising a chicklet receiving channel; and
- a chicklet movable relative to said retainer and trapped within said chicklet receiving channel, said chicklet comprising a triangular shaped portion and a shaft extending from said triangular shaped portion, and a cutout in said shaft.
- 2. A damper in accordance with claim 1 wherein said retainer comprises first and second guides positioned on opposing sides of said chicklet and a cross wall member for limiting movement of said chicklet.
- 3. A damper in accordance with claim 1 further comprising a pin extending into an opening in, and fixed to, said retainer.
- 4. A damper in accordance with claim 1 wherein said retainer further comprises a support flange for cooperating with the disk to facilitate positioning of said damper.
- 5. A damper in accordance with claim 1 wherein a bolt opening is located in the disk, and said retainer further comprises a bolt opening for aligning with said disk bolt opening.
- 6. A damper in accordance with claim 5 further comprising a self-wrenching bolt for extending through said retainer bolt opening and the disk bolt opening to secure said damper to the disk.
- 7. A damper in accordance with claim 1 wherein said chicklet further comprises a contact surface for contacting an underside of adjacent blade platforms.
- 8. A damper in accordance with claim 1 further comprising a pin extending into an opening in, and fixed to, said retainer, said pin extending into said cutout.
- 9. A damper for damping vibrations in blades of a turbine rotor including a disk and blade platforms, said damper comprising a retainer and a chicklet cooperating to provide both blade to blade damping and blade to ground damping, said chicklet comprising a contact surface for contacting an underside of adjacent blade platforms, a triangular shaped portion and a shaft extending from said triangular shaped portion, and a cutout in said shaft.
- 10. A damper in accordance with claim 9 wherein said retainer attaches to the disk of the rotor blade, said retainer comprising a chicklet receiving channel, and said chicklet is trapped within said chicklet receiving channel.
- 11. A damper in accordance with claim 9 wherein said retainer comprises first and second guides positioned on opposing sides of said chicklet for limiting movement of said chicklet, and a support flange for cooperating with the disk to facilitate positioning of said damper.
- 12. A damper in accordance with claim 9 further comprising a cross wall member to limit movement of said chicklet relative to said retainer.
- 13. A damper in accordance with claim 9 further comprising a pin extending into an opening in, and fixed to, said retainer, said pin extending into said cutout.
GOVERNMENT RIGHTS
The government has rights in this invention pursuant to Contract No. F33657-94-C-0028 awarded by the Department of the Air Force.
US Referenced Citations (7)