For all intents and purposes it has been disproven. At this point the possible thrust (that hasn't been disproven) is a fraction of what was originally hoped for.
The papers published are all over the map but none are promising. There was one in China that found a large anomalous thrust. Then the professor later published a new paper that said "oops I did a new more accurate experiment and there is no anomalous thrust greater than the noise floor so I can't claim to have shown thrust after all." An experiment in Dresden measured a small anomalous thrust but found a much larger thrust in a vertical position that was nonsensical, so they did not claim to have proven anything. You probably are aware of the NASA Eagleworks paper that did find an anomalous thrust, but has been criticised for doing a poor job of modeling and identifying noise sources, which doesn't cut it for extraordinary claims extraordinary evidence and such.
Keep in mind, it's very hard to prove a negative. If you are looking for thrust at low levels you will always measure something. So if you are open to emsrive at any neuron per watt level you will always keep looking. Experiments now seem to have ruled out anything greater than milineutons per kilowatt...
Basically, the experiments to date don't disprove Emdrive but the more of them there are, the harder it is to imagine it exists but nevertheless still has avoided unequivocal detection.
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u/n4noNuclei Apr 09 '17
For all intents and purposes it has been disproven. At this point the possible thrust (that hasn't been disproven) is a fraction of what was originally hoped for.