A brief status report on bearing technology and present and near-term future problems that warrant research support is presented. For rolling element bearings a material with improved fracture toughness, life data in the low A region, a comprehensive failure theory verified by life data and incorporated into dynamic analyses, and an improved corrosion resistant alloy are perceived as important ...

We are reporting the results of studies on issues related to the injection stripping foil in the Spallation Neutron Source (SNS) accumulator ring. The problems related to foil heating and foil lifetime, such as current density distribution and temperature distribution in the foil, are investigated. The impact of injection errors on the beam losses at the foil is studied. The particle traversal ...

For a 120kW hydrogen fuel cell system, centrifugal air compressor with fixed power of 22kW is designed. Firstly, the theoretical calculation carried out for aerodynamic characteristics ultra-high-speed permanent magnet synchronous motor, an compressor, and foil bearing. Then, prototype trial-produced related test bench built verification. Finally, both simulation results indicate that designed ...

Abstract In air conditioning system for aircraft, cycle machine (ACM) is the flimsy core component, which impacted observably by performance and reliability of elastic foil air-dynamic pressure bearing. It's necessary to have research on static characteristics Based finite element analysis (FEA) theory, it’s clearly obtained that discretized fluid lubrication Reynolds equation dynamic bearing w...

Foil bearings are an integral part of oil-free turbomachines which have been selected as a potential technology to enable cost efficient Supercritical Carbon Dioxide Brayton cycle for solar power application. Using high pressure CO2 as the operating fluid means that within the film Reynolds numbers in the highly turbulent regime are observed, therefore, using traditional simulation tools, such ...