YR-VVI is listed as the Capra & Sebe Virvas 4000. Described as an aerodină, the Virvas 4000 was meant to be a 'helicopter' driven solely by efect pelicular. How this electromagnetic wave skin effect was meant to propeller the machine, I have no idea.
You could try searching for Virgilius Justin Capră (1933-2015), sometimes given as Justin Virgilius Capră. This Capră was either a genius inventor, a shameless self-promoter, or both ... depending upon who is talking. No idea who Sebe was.