Rotor damper
US10385696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2016 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Dec 6, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/96
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotor stage (100) of a gas turbine engine (10) comprises a platform (120) from which rotor blades extend. The platform is provided with a circumferentially extending damper ring (200), the damper ring having an engagement surface (210) that engages with a platform engagement surface (110) of the platform (120). The platform engagement surface (110) and the damper engagement surface (210) can move relative to each other in the radial direction. In use, the damper engagement surface (210) moves less in the radial direction than the platform engagement surface (110) in response to diametral mode excitation. This causes friction between the two surfaces, thereby dissipating energy and damping the excitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.