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Gas seal pad with herringbone-grooved rotor-stiffness and load capacity
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Flemming, David P. |
| Copyright Year | 2006 |
| Description | The principle of herringbone-grooved journal bearings has been applied to the case of a seal disc running under a finger seal pad. The inward pumping action of herringbone grooves on the disc generates load capacity and stiffness to maintain a fluid film and prevent contact of the pad and disc. This mechanism does not depend on a converging film under the pad, such as analyzed in previous works. Analysis shows that significant stiffness and load capacity can be supplied by herringbone grooves. In order for the grooves to be effective, the seal pressure drop must be taken outside of the grooved portion of the rotor, but this may be acceptable in order to gain freedom from maintaining a precise film convergence. |
| File Size | 1340530 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20060025000 |
| Archival Resource Key | ark:/13960/t0gv0k68b |
| Language | English |
| Publisher Date | 2006-05-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Gases Seals Stoppers Compressibility Rotors Fluid Films Load Carrying Capacity Stiffness Grooves Aspect Ratio Journal Bearings Convergence Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
