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Dynamic behavior of air lubricated pivoted-pad journal-bearing, rotor system. 2: pivot consideration and pad mass
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Nemeth, Z. N. |
| Copyright Year | 1972 |
| Description | Rotor bearing dynamic tests were conducted with tilting-pad journal bearings having three different pad masses and two different pivot geometries. The rotor was vertically mounted and supported by two three-pad tilting-pad gas journal bearings and a simple externally pressurized thrust bearing. The bearing pads were 5.1 cm (2.02 in.) in diameter and 2.8 cm (1.5 in.) long. The length to diameter ratio was 0.75. One pad was mounted on a flexible diaphragm. The bearing supply pressure ranged from 0 to 690 kilonewtons per square meter (0 to 100 psig), and speeds ranged to 38,500 rpm. Heavy mass pad tilting-pad assemblies produced three rotor-bearing resonances above the first two rotor critical speeds. Lower supply pressure eliminated the resonances. The resonances were oriented primarily in the direction normal to the diaphragm. |
| File Size | 2337279 |
| Page Count | 44 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720008687 |
| Archival Resource Key | ark:/13960/t5v746d4n |
| Language | English |
| Publisher Date | 1972-02-01 |
| Access Restriction | Open |
| Subject Keyword | Machine Elements And Processes Dynamic Response Cushions Pivots Pressure Effects Gas Lubricants Rotors Graphs Charts Journal Bearings 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 |
