I've seen some calculations showing that there is a toroidal electric field within the device. I wonder if the movement is due the pull of the magnetic field of the Earth.
2016-12-28 16:43 GMT-02:00 Stephen A. Lawrence <sa...@pobox.com>: > Just to point something out -- the EM drive *obviously* doesn't need to > be outside the craft to work, since it doesn't eject mass. > > Furthermore (and consequently), it violates conservation of momentum, > conservation of angular momentum, conservation of energy, and conservation > of mass. While data trumps theory, this doesn't seem like the most likely > explanation of the effect to me. > > Gedanken: Put an EM drive in a box. Attach it to a wire. Attach the > other end of the wire to a pivot (like one of those old gas powered toy > planes people used to have before the days of radio control). Let the box > with the EM drive go. It will accelerate in a circle, around the pivot > point. > > Power consumption inside the box is presumably constant. Power generated > varies in proportion to the speed of the box (power = force * velocity). > So, at some point it'll be generating more power than it's consuming. And > there's the violation of CoE. (With a bit of cleverness you can turn it > into a Type I perpetual motion machine.) > > Meanwhile it's going lickety split around the pivot, with increasing > angular momentum; with no mass ejection there's no compensating decrease > anywhere else. There's the violation of conservation of angular momentum. > > And as its velocity increases, its mass increases as gamma*m. There's the > violation of conservation of mass. > > And violation of linear momentum is obvious. > > On the other hand if it doesn't work, then all that's being violated is > the assumption that the handful of extremely delicate high precision > experiments that have been done to show the effect were not somehow botched. > > I'm not holding my breath on this one. > > > On 12/28/2016 02:02 AM, David Roberson wrote: > > Russ, > > Can you verify that the Chinese actually have a functioning EM drive on > their space station. Also, how much thrust are they claiming? Finally, is > that device or group of devices capable of maintaining all of the > orientation required for the station? > > Dave > > > > -----Original Message----- > From: Russ George <russ.geo...@gmail.com> <russ.geo...@gmail.com> > To: vortex-l <vortex-l@eskimo.com> <vortex-l@eskimo.com> > Sent: Tue, Dec 27, 2016 3:45 pm > Subject: [Vo]:EM Drive need not be outside the spacecraft > > A curious facet of the EM drive, such as the one now operating on the > Chinese space station is that it need not be on the outside of the > spacecraft, it’s thrust is independent of the position and surrounding > matter. This enables all manner of interesting spacecraft geometries. > > > -- Daniel Rocha - RJ danieldi...@gmail.com
