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Old October 18th 16, 03:35 PM posted to sci.space.policy
David Spain
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Posts: 2,901
Default Emdrive might change the law of inertia (for the Earth too!)

On 10/12/2016 4:37 AM, Non Newtonian Propulsion wrote:


For the fact that action reaction violation need the change of the first law of newtonian inertia
and for the fact that is in contact with the terrestrial environment

https://neolegesmotus.wordpress.com/...s-another-law/

https://www.reddit.com/r/EmDrive/com...of_the_law_of/

Utter non-sense. Learn some EM theory. There is no force "delay", the
'B' component acts on the EM field in its presence. As the field weakens
so does the force. There is no delayed force propagating to the protons
of 'A', If you tuned and tuned all day you could produce standing waves
between the two, but that's about it. If this worked as described you
could easily demonstrate the ability to make the elements of any dipole
antenna wave around simply by tuning the transmitter. I offer proof that
this is wrong by contradiction.

Junk.

As for EM Drive....

Before we resort to that let's wait for the experimental results to come
back from those experiments soon to take place using Mu metals*.

At the present time it's looking quite possible that this device is not
much more that a *really* expensive electrically powered magnetic
compass. In other words, the extremely weak forces generated may not be
present in deep space w/o the Earth's geomagnetic field to help out.

The only other theory currently extant is that this device is drawing
(somehow) on quantum vacuum energy. Shawyer's conception of it deriving
its propulsive force strictly via SR mechanics has been thoroughly
debunked. Without the QVE theory it violates conservation of momentum.
And with a thrust superior to that of a photon rocket it violates
conservation of energy as well (i.e. it becomes a perpetual motion
machine when used to drive a generator). I won't provide the cites, look
them up yourself (Google).

Dave

*Although why no one has tried changing thrust directions using far
easier to obtain or make Helmholtz coils is beyond me. Maybe I should
ping the forums on that...