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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Sun, Guangyoung Jansen, Ralph Duffy, Kirsten |
| Abstract | NASA Glenn Research Center has been developing efficient flywheel batteries for a variety of space power applications, which provide the advantages of higher energy density, longer life span, and lower maintenance over electrochemical batteries as a next-generation energy storage device. As a component of enhancing the reliability of a flywheel module, the touchdown bearing system plays a crucial role in case of the malfunction or failure of magnetic bearings. In this paper, a design for touchdown support system has been proposed, a mathematical model for characterizing the dynamic behavior for the touchdown bearing system developed and then the numerical analysis using key design parameters followed. Transient simulations for the flywheel 1G delevitation onto the touchdown bearings suggest a design guide for the touchdown system, which maximizes the minimum air gap at the magnetic bearings and minimizes the dynamic loading as well as allows a safe flywheel rotor landing. |
| Sponsorship | Design Engineering Division and Computers and Information in Engineering Division |
| Starting Page | 1703 |
| Ending Page | 1709 |
| Page Count | 7 |
| File Format | |
| ISBN | 0791848027 |
| DOI | 10.1115/DETC2007-34974 |
| e-ISBN | 0791838064 |
| Volume Number | Volume 1: 21st Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C |
| Conference Proceedings | ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
| Language | English |
| Publisher Date | 2007-09-04 |
| Publisher Place | Las Vegas, Nevada, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Bearings Nasa Rotors Dynamic testing (materials) Flywheels Magnetic bearings Maintenance Density Transients (dynamics) Design Numerical analysis Simulation Engineering simulation Reliability Failure Energy storage |
| Content Type | Text |
| Resource Type | Article |
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