Further Developments
In 1999, Dean’s son, Norman Robert “Bob” Dean, appeared at an anti-gravity conference by invitation of a group of patent holders who had created differing versions of the reactionless drives that referred to N.L. Dean in their patents. He gave a presentation about his father’s device.
In 2009, Professor Provatidis published his first paper on the mechanics involved in Dean drive. He claims to have proven that the device practically works like a catapult while a variable angular velocity can only control the smoothness of the object velocity to which the drive is attached. Moreover, as the net impulse produced by rotating mass particles along a circle is zero (in Dean drive), he proposed the transformation of the aforementioned circle to a figure-eight-shaped curve (symbol of infinity) in which only the upper (or lower) 180 degrees are drawn thus causing anti-gravity effects.
Read more about this topic: Dean Drive
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