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Dynamic spin rig upgraded with a five- axis-controlled three-magnetic-bearing support system with forward excitation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Morrison, Carlos R. Mehmed, Oral |
| Copyright Year | 2003 |
| Description | The NASA Glenn Research Center Dynamic Spin Rig is used for experimental evaluation of vibration analysis methods and dynamic characteristics for rotating systems. Measurements are made while rotors are spun and vibrated in a vacuum chamber. The rig has been upgraded with a new active magnetic bearing rotor support and excitation system. This design is expected to provide operational improvements over the existing rig. The rig will be able to be operated in either the old or new configuration. In the old configuration, two ball bearings support the vertical shaft of the rig, with the test article located between the bearings. Because the bearings operate in a vacuum, lubrication is limited to grease. This limits bearing life and speed. In addition, the old configuration employs two voice-coil electromagnetic shakers to apply oscillatory axial forces or transverse moments to the rotor shaft through a thrust bearing. The excitation amplitudes that can be imparted to the test article with this system are not adequate for components that are highly damped. It is expected that the new design will overcome these limitations. |
| File Size | 77344 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050214859 |
| Archival Resource Key | ark:/13960/t8hf2sm9t |
| Language | English |
| Publisher Date | 2003-03-01 |
| Access Restriction | Open |
| Subject Keyword | Dynamic Structural Analysis Support Systems Dynamic Characteristics Vacuum Chambers Ball Bearings Thrust Bearings Oscillations Greases Magnetic Bearings Rotation 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 |
