Logan Shaw wrote:
Ad absurdum per aspera wrote:

Accounting for real-world efficiency, the actual power usage curve, and
other things you'd want to tease out if you were designing or
specifying equipment, rather than just getting a quick calculation onto
the right order of magnitude, makes for big equations with a lot of
moving parts.


Agreed. I was just trying to imply that an hour's worth of friction
might change the energy by an entire order of magnitude.

On the other hand, if it truly takes an hour to get up to speed,
then maybe friction is only a small part of the battle...

- Logan
There is no friction.An eddy current drive would be magneticly coupled.