Could i use electromagnets to increase the strength of a high speed

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SUMMARY

The discussion centers on the feasibility of using electromagnets to enhance the strength of a high-speed flywheel by creating a repulsive force between magnets placed on the outside of the flywheel and inside its casing. While the concept may theoretically provide additional resistance against centrifugal forces, practical challenges such as system losses and the need for extremely strong magnets render the potential gains questionable. Furthermore, variations in the magnetic gap could introduce significant complications, outweighing any benefits. Modeling the rotordynamics of such a system presents an intriguing engineering challenge.

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Webbd050
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Flywheel? I don't know much about magnets, but if i used magnets on the out side of a flywheel and the inside of the flywheel caseing which repel each other effectively crushing the flywheel to oppose centrifugal forces. Would this creat greater resistance on the rotation of the flywheel? Thanks
 
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In principle, I think it could work. In reality, however, you get all sort of additional losses in the system, and I doubt the gain would be notable. The edges of flywheels easily reach accelerations of the order of thousands of g, the magnets would have to be extremely strong to give a significant fraction of the corresponding forces.
 
Since the magnetic force will depend on the gap between the two sets of magnets, I would expect the unwanted variations in force (because in real life the gap will not perfectly uniform) would create worse problems than the one you are trying to solve.

Modeling the rotordynamics of a system like that could be an "interesting" problem though.
 

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