Design, Fabrication, and Performance of Foil Gas Thrust Bearings for Microturbomachinery Applications
| Autor: | Robert J. Bruckner, Christopher DellaCorte, Brian J. Edmonds, Brian Dykas, Joseph M. Prahl |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Engineering
Fabrication Foil bearing Computer science Energy Engineering and Power Technology Aerospace Engineering Mechanical engineering law.invention Machining Deflection (engineering) law Turbomachinery medicine FOIL method Parametric statistics Load capacity Bearing (mechanical) business.industry Mechanical Engineering Stiffness Structural engineering Tribology Fuel Technology Thrust bearing Nuclear Energy and Engineering medicine.symptom business |
| Zdroj: | Journal of Engineering for Gas Turbines and Power. 131 |
| ISSN: | 1528-8919 0742-4795 |
| DOI: | 10.1115/1.2966418 |
| Popis: | Amethodologyforthedesignandconstructionofsimplefoilthrust bearingsintendedfor parametricperformancetestingandlow marginal costs is presented. Features drawn from a reviewof the openliterature are discussed as they relate to bearingper-formance. The design of fixtures and tooling required to fab-ricate foil thrust bearings is presented, using conventional ma-chining processes where possible. A prototype bearing with di-mensionsdrawnfrom theliteratureis constructed,with allfabri-cationsteps described. Aload-deflectioncurvefor thebearingispresented to illustrate structural stiffness characteristics. Start-stop cycles are performed on the bearing at a temperature of425 ◦ C to demonstrate early-life wear patterns. A test of bearingload capacity demonstrates useful performance when comparedwith data obtained from the open literature. Introduction Foil gas bearings represent an enabling technology foradvanced oil-free turbomachinery systems. Operating athigh speeds and temperatures, these next-generation turboma-chines will present tribological challenges that conventional oil-lubricated rolling element bearings may be unable to meet, in-cluding shaft speeds well above three million DN and bearingtemperatures in excess of 400 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|