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Dynamic response of film thickness in spiral-groove face seals
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dirusso, E. |
| Copyright Year | 1985 |
| Description | Tests were performed on an inward- and an outward-pumping spiral-groove face seal to experimentally determine the film thickness response to seal seat motions and to gain insight into the effect of secondary seal friction on film thickness behavior. Film thickness, seal seat axial motion, seal frictional torque, and film axial load were recorded as functions of time. The experiments revealed that for sinusoidal axial oscillations of the seal seat, the primary ring followed the seal seat motion very well. For a skewed seal seat, however, the primary ring did not follow the seal seat motion, and load-carrying capacity was degraded. Secondary seal friction was varied over a wide range to determine its effect on film thickness dynamics. The seals were tested with ambient air at room temperature and atmospheric pressure as the fluid medium. The test speed ranged from 7000 to 20,000 rpm. Seal tangential velocity ranged from 34 to 98 m/sec (113 to 323 ft/sec). |
| File Size | 1338101 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860005843 |
| Archival Resource Key | ark:/13960/t7pp4018n |
| Language | English |
| Publisher Date | 1985-12-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Dynamic Response Seals Stoppers Gas Bearings Vibration Friction Oscillations Hydrodynamics Grooves Film Thickness 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 |
