Grimer wrote. > > Fred wrote: > > >Not much torque there,if I didn't goof, Frank. > > > >Fred > > > I fear you might have Fred since I believe that the mechanism > of operation of the radiometer is a bit different from the > one you seem to be assuming. Something to do with the edges > of the vanes and molecules percolating and them IIRC. > It doesn't matter much even if you bottle the gas striking a square meter of the vanes each second (4.7E-4 kg) and it comes out of jets at the tip at ~ 360 meters per second you could get 0.17 kg-meters/sec thrust per square meter which is about 16.2 times the (0.083 newtons force per Meter^2) I came up with.
Fred. > > > Frank
