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An evaluation of bearings operating in a cryogenic environment with silicon nitride rolling elements
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gibson, H. G. |
| Copyright Year | 1991 |
| Description | The bearings used in the space shuttle main engine (SSME) high pressure oxidizer turbopump (HPOTP) do not meet the expected life goals that were set for them. In an effort to improve their performance, many solutions are being studied. New bearing materials are being developed, better manufacturing techniques are being investigated, and improved cage materials for better lubrication are being tested. The focus is on the replacement of steel balls with ones made of silicon nitride in 57-mm HPOTP bearings. The bearings were then installed in a test rig and run at near turbopump operating conditions. The results from this test series are encouraging, with silicon nitride showing good wear resistance and thermal stability. |
| File Size | 1597344 |
| Page Count | 27 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910009123 |
| Archival Resource Key | ark:/13960/t1hj1f691 |
| Language | English |
| Publisher Date | 1991-01-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Service Life Turbine Pumps Ball Bearings Space Shuttle Main Engine Cryogenics Silicon Nitrides Wear Resistance Lubrication Wear Tests Oxidizers High Pressure 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 |
