Shawyer gets new patent for EM drive upgrade using a superconducting plate on one side of his trapezoid microwave cavity. Claims magnitudes higher thrust. http://www.dailymail.co.uk/sciencetech/article-3847258/The-new-improved-EmDrive-Patent-reveals-details-impossible-fuel-free-engine-one-day-man-Mars-10-weeks.html
IMHO the drive is related to Casimir effect , driven by microwave energy instead of spatial suppression of longer vacuum wavelengths by nano spaced counductive boundaries both segregate tiny ribbons of space time with greater and lesser regions of vacuum wavelength supression. Any matter migrating thru one region more than the other will average to a different inertial frame than the stationary observer even if that frame is negative like the anomalous radioactive decay rates reported for nano powders or the anomaly wrt spontaneous emissions inside a microwave cavity.
