Flying Saucers Through the Ages

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some of the pics don't show

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It has occurred to me that if we ever manage to develop a small efficient fusion reactor and combine it with some kind of ion propulsion system, the low thrust density of the ion system might require lots of surface area for VTOL. A saucer shape might be perfect! Now if only we could figure out how to use nanotechnology to build arrays of efficient single ion cannons on a chip...

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