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>
To: vortex-l <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.
