Solar will Win!!!

378486_554142814602197_1776229545_n“[Electrohydrodynamic thrust] is capable of a much higher efficiency than any combustion reaction device, such as a rocket or jet thrust-production device,”

Ionic thrusters + solar energy + 3D printing = airplanes powered by electricity.

http://web.mit.edu/newsoffice/2013/ionic-thrusters-0403.html

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