Dynamic response modification and stress reduction in dovetail and blade assembly
US4480957A · kind A · utility
34Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1983 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Apr 14, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S416/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A dovetail of a rotor blade is preferentially remove to thereby modify the support given to the root of a rotor blade. The modified support changes the vibrational characteristics of the rotor blade for reducing the tendency toward crack initiation. In one embodiment of the invention, one or more damping masses are fitted into the dovetail slot within the removed portion of the dovetail. The damping masses are loaded outward against the base of the rotor blade by centrifugal force and frictionally damp some of the vibrational energy of the rotor blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.