On Sat, 1 Jun 2002, Randall Clague wrote:
> >There's one awkward issue with this design though- what stops the body
> >of the rocket turning with the engine?
>
> The bearing. Is it going to be 100% effective? No, nothing ever is.
As with Roton, in principle all you need is an electric motor providing
just enough torque to cancel out bearing friction. The rotor is, after
all, self-powered, so bearing friction is the only torque on the body.
Of course, if the thing is spinning at the sort of speed that has been
mentioned, you may need a somewhat unusual motor.
And of course, things will get exciting the moment you try to make a
turn.
Henry Spencer
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