And also Woodward drive, which also contains capacitors within electromagnets. The capacitors create Dirac electrons, the magnetic impulse sets them in motion, the beam of scalar waves gets thrown back and the thrust is generated by reactive force. Many reactionless drives work on similar principle - just the geometric proportions of electromagnets and capacitors differ.
I have to specify (but you probably already know) that PNN is different from Woodward's drive because it doesn't contain moving parts.
Just an area of vacuum rich of scalar waves (there is relative excess of longitudinal waves of vacuum over transverse ones, i.e. more virtual neutrinos than virtual photons). It's also sometimes labeled as an area of negative energy and it exhibits contraction of time (it attenuates noise and many processes should run faster there). It should be also detectable with Juday-White warp interferometer.
You mean that interferometer can indirectly detect those waves, right?