Lifters: Electrical Propellentless Propulsion (Video 8)

Electrical propellentless propulsion of small-scale vehicles has been replicated many times; these are operable even in a high vacuum. Examples are described and a hypothesis is given describing a possible explanation of how this technology functions. PDF is available here.
www.cs.odu.edu/~mln/ltrs-pdfs/NASA-2003-cr212169.pdf
Actual Report is here, second from the top.
https://search.yahoo.com/search?p=Advanced+Energetics+for+Aeronautical+Applications&ei=UTF-8
This is the referenced Naudin site.
http://jnaudin.free.fr/lifters/main.htm

This is T. Townsend Brown's Patent.
U.S. Patent 2,949,550

Thank you for your attention.