Cascade Kasperwing I-80
The Cascade Kasperwing I-80 is an American ultralight flying wing motorglider that was designed by Witold Kasper and Steve Grossruck. It was produced by Cascade Ultralites and introduced in 1976. The aircraft was supplied as a kit for amateur construction. Design and development. The I-80 was designed long before the US FAR 103 Ultralight Vehicles rules were introduced, but the aircraft fits into the category, including the category's maximum empty weight of . The aircraft has a standard empty weight of . It features a cable--braced high-wing, a single-seat, open cockpit, tricycle landing gear and  a single engine in pusher configuration. The aircraft is made from bolted together aluminum tubing, with the wing Dacron sailcloth covered. Its span, single-surface wing employs a special Kasper-designed airfoil that allows both normal flight and a fully controlled, completely stalled parachutal descent mode. The wing is cable-braced from a single kingpost.The pilot is accommodated in a nylon-web swing seat. The controls are unconventional, with pitch controlled by weight shift and roll and yaw controlled by canted-outwards wing tip rudders. The powerplant is a Zenoah G-25 of . The landing gear is of tricycle configuration , with a steerable nosewheel that has reversed controls; the pilot pushes the right pedal to go left and vice versa. The aircraft achieves a glide ratio of 10:1 at . The I-80 can be fully disassembled for transport, including reducing the wing to a compact bag of tubing, while the fuselage cage remains assembled