Patent ID: 7913954

Claim:
An electrodynamic structure having a periphery, the electrodynamic structure comprising: a power system; a plurality of collectors disposed on the periphery of the electrodynamic structure and configured to collect electrons; a plurality of emitters disposed on the periphery of the electrodynamic structure and configured to emit electrons, wherein at least 20% of the periphery of the electrodynamic structure is utilized for electron collection and electron emission; and conductive paths configured to conduct current between the power system, the emitters, and the collectors to provide at least one of power generation and electrodynamic propulsion; wherein the largest planar projection area of the smallest single shape without holes enclosing the plurality of collectors, the plurality of emitters, and the conductive paths is at least 25% of an area of a circle having a circle perimeter equal to the perimeter of the largest planar projection area.