Way back in the 50's too. A man named Thomas Townsend Brown, working for General Electric, discovered that a capacitor when highly charged would tend to move in the direction of its positive pole. This was aptly named the Biefeld-Brown effect.
Below is the Space Vehicle Research Proposal by a colleague of T.T. Brown. Interesting drawings huh?
The B-2 Spirit is the likely the final outcome of T.T. Brown's research. If they made this back in the late 70's, imagine what they can do now.
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