Of course thrust would be generated if RF is directed away from the drive into space. Unfortunately, this is not happening in these devices since they are well shielded and keep the RF from escaping.
Dave -----Original Message----- From: Eric Walker <eric.wal...@gmail.com> To: vortex-l <vortex-l@eskimo.com> Sent: Mon, Mar 14, 2016 10:36 pm Subject: Re: [Vo]:Re: EM Drive(s) On Mon, Mar 14, 2016 at 9:24 PM, Bob Cook <frobertc...@hotmail.com> wrote: If a pulsed magnetic field is involved in the EM drive it may be that effective momentum is sent off into space as a pulsed magnetic field with some effective mass associated with the average intensity of the magnetic field pulse—energy associated with the pulse. This is along the lines that I was thinking. Consider a simple thought experiment. We have a microwave waveguide with the output focused in a single direction sitting out in the middle of space where there is little in the way of an external field. Attached to it is a battery sufficient to drive a magnetron at 10 W for some period of time. We turn on the magnetron remotely. Microwave photons with a total power amounting to 10 J per second are now being emitted in a preferred direction. For the sake of argument we will go with the well-accepted assumption that photons have no mass. Nonetheless they have momentum, and in order for the system to conserve momentum it will move in a direction opposite the majority of the photons. We have yet not specified what the system is pushing off of, but I don't think we need to in order for the thought experiment to work. Eric
