As described before in this blog, PC-Aero’s Elektra One is a single-seat electric airplane with an Eck/Geiger 13.5 kilowatt motor in the nose, and now at least partially solar powered. http://www.youtube.com/watch?v=r03nim-6qBw&feature=related Designer Calin Gologan gives a walkthrough of the design features which make Elektra One such an efficient airplane, and one likely to give other competitors in the Green Flight Challenge a good run. While he describes the thin carbon-fiber shells which comprise the airplane’s primary structure, notice the light shining through. That thinness helps explain Elektra One’s 100 kilogram (220 pounds) empty weight, only about 100 pounds of which is structure. The motor is 4.7 kilogram (10.34 pounds) and the controller is a 270 gram (9-1/2 ounce) model airplane marvel. Batteries can add up to 100 kilograms and the pilot another 100 kilograms, making the strength-to-weight ratio of the craft rather impressive, and its payload carrying abilities among the greatest for flying machines. Gologan claims a maximum range of 500 …
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