Laminated rolls of carbon fiber spinning at high RPM on magnetic bearings have been the state of the hype for terrestrial flywheel power applications for the la

Laminated rolls of carbon fiber spinning at high RPM on magnetic bearings have been the state of the hype for terrestrial flywheel power applications for the last 13 years: http://www.wired.com/wired/archive/8.05/flywheel.html http://www.wired.com/wired/archive/8.05/flywheel.html Magnetic bearings have been used in fans, and I'm familiar with a bearing-analogous application in Inductrack maglev trains as well. Has this type of tech penetrated into aerospace?