Inertia wheel
US4211452A · kind A · utility
61Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1978 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | Mar 14, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inertia wheel more particularly adapted to space applications. It includes the combination of a peripherical type of motor with permanent magnet on the rotor and ironless winding on the stator. The current of said winding is switched electronically by an amplitude modulation system, associated to a reactance coefficient varying circuit, and reversal of the direction of rotation of which is achieved by permutation of the control circuits. There are also provided bearings formed by a passive radial magnetic centering device and a redundant active axial magnetic centering device slaved to an axial rate detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.