Students at the National University of Singapore (NUS) have a history of creating ultra-lightweight flying machines that are also green – floating around on electric power. Their earlier effort, Snowstorm, a 24-rotor, single-person lifting device, so far has hovered only indoors. Eight engineering students, working within the school’s “Frogworks” program, have escaped into the great outdoors with their Delta, the world’s lightest electric paraglider – according to the school. With two eight-kilowatt electric motors, four 14S lithium polymer battery packs, and tricycle landing gear, the Delta weighs in at 49 kilograms (107.8 pounds) empty weight. Delta can carry a 75-kilogram (165 pound) pilot. Cleverly constructed of carbon fiber and aluminum, the craft is claimed to be “the lightest aircraft in the world that can take off and land with wheels while carrying an adult pilot.” Fourth in a series of vehicles designed and built by NUS students in the Design-Centric Program (DCP) at the NUS Faculty of Engineering, the Delta …