There were one or two replication attempts on the NASA forums following the most recent positive, albeit inconclusive, results. But unfortunately it suffers from a similar problem as LENR in that few folks have the cahoneys or resources to play with live magnetrons. This is lab science, not desktop science.
I've been following keenly since the New Scientist piece on Shawyer, but still don't fully understand these systems - a point that never seems to get mentioned in these discussions is that even IF Shawyer et al are right, and momentum is conserved, this can only be true from within the inertial (on-board) reference frame - any effective violation of N3 symmetry inevitably creates KE as observed from the non-inertial frame. Such a drive system is velocity-agnostic. If a 1 m/s acceleration costs, say, 10 Joules per kg - a measly efficiency - it will nonetheless maintain that exchange rate across any range of velocity - so from 0 to 1 m/s costs 10 J, but so does 99 to 100 m/s (normal price 95 J) and 999 to 1000 m/s (1 kJ RRP). What we save on input energy has effectively been "created" in the form of output KE. Usually KE = 1/2MV^2, and only momentum P = MV, but an effective N3 violation blurs that distinction - input energy scales linearly from within the inertial frame, while evolving via the usual 1/2^2 route as observed from the external frame. To all intents and purposes, the actual terms and dimernsions of what is being input is not energy, but raw momentum. So an EM drive in a lab cannot show an energy asymmetry because it can't accelerate anywhere. But if it works, any extended flight test could really throw the cat amongst the pigeons.. On Sat, Mar 12, 2016 at 9:39 PM, Russ George <russ.geo...@gmail.com> wrote: > Now that there are lenr kits and bits being sold and as well the Orbo's it > is time for someone to offer EM Drive kits. Enough of this fantasy about a > cell phone that needs no battery or an efficient home heater... What is > really inspiring is making science fiction's most desired fiction a reality > and seeing tonnes of propellant-less thrust with mere kilowatts of > electrical power that will surely be an effective space propulsion. Where > is the best discussion and details on DIY EM drives to be found? > >
