Laser is not _bounced_ radially, is it? (was Laser-bounce radiation-

>> > If the radiation is totally reflected, the radiation pressure is doubled."
>> The force is directed radially (close enough).
>
> The laser beam is bounced non-radially (forward, orbit-wise), according to your ppt slide diagram.

6 degrees. It would take 0.003 N to compensate. This is a trivial
ion engine thrust.

> That slows the mirror in its orbit. A possible solution would be to compensate by bouncing the laser beam in the opposite direction half the time, or simultaneously. That would double the electrical power draw, and possibly double the needed power of the laser system (at least in the case of simultaneous compensation).

A much less expensive solution would be to move the mirror 3 degrees forward.
>
>> a 5t bounce mirror would need to orbit 0.4 km inside GEO to offset the radiation force.
>
> The laser would be forced to operate consistently, for the life of the system, to keep the laser from falling from its compensatory orbital height.

If someone builds a $40 billion laser they are going to keep it
operating 24/7. The effect of losing the laser beam thrust would be
to put the mirror in an orbit 1 part in 100,000 faster. So after 100
days with no correction it would have drifted about 0.3 deg from where
it started.

You really should consider learning some math.

Keith