Loading...
Please wait, while we are loading the content...
Similar Documents
Evaluation of axial lock-up of space shuttle main engine bearings from high pressure oxygen turbopump
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dufrane, K. F. Kannel, J. W. |
| Copyright Year | 1980 |
| Description | The mainshaft support bearings of long life turbopumps for use on the space shuttle were evaluated to determine possible causes of failure. Specific aspects examined include the sensitivity of 15 degree versus 25 degree contact angle bearings with regard to heat damage and thermal runaway, the L/D aspects of the turbine end bearing pair with regard to hang-up due to cocking, the hang-up required to support a 44.5 KN axial load without cartridge slipping, the outer race growth as a result of a 44.5 KN axial load, and bearing torque as a function of axial load. Results indicate that hang-up of the cartridge due to bearing heating is a serious problem especially if poor lubrication of the bearing occurs and that race growth due to axial load can contribute to cartridge lock-up. The experimental evaluation of bearing performance under axial loads indicates that the bearing torque is a strong function of surface lubrication. |
| File Size | 1750838 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810004575 |
| Archival Resource Key | ark:/13960/t2s51gd55 |
| Language | English |
| Publisher Date | 1980-11-24 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Turbine Pumps Bearings Space Shuttle Main Engine Failure Modes Axial Loads Lubrication Shafts Machine Elements 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 |
