Klaus Burkhard publishes a wonderful web site and blog on ultralight sailplanes, with special attention to the Banjo sailplane, one of which he owns and flies. His interest in other craft is broad, though, and he recently shared news of a flying wing sailplane that can be electrically powered. Its designer and builder, Dr. Andre’s Chavarria-Krauser explains: “Schneewittchen (Snow White) is designed to fulfill the requirements of LTF-L, a class of very light airplanes with up to 120 [kilograms] (264 pounds – 10 more than U. S. Part 103 limits) empty weight. The requirements are quiet stringent, including not only the extremely low empty weight, but also a very low stall speed below 55 km/h (corresponds to 30 [knots] or 34 MPH).” The stall speed is still six mph faster than Part 103 rules allow. Snow White’s all-wing configuration suits this class well, according to its builder. Its thick center section, which could be seen as a lifting-body layout, allows lighter spar weight …
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