WING-IN-GROUND EFFECT CRAFT-AMPHIBIA ON AIR CUSHION Russian patent published in 2003 - IPC

FIELD: aircraft. SUBSTANCE: wing-in-ground effect craft-amphibia contains series mounted main and additional low-aspect-ratio ground-effect wings rigidly connecting floats-skeg secured on their end faces. Each float-skeg is curved to radius in vertical plane. Concave saucer hull is installed on floats-skegs between main and plane. Concave saucer hull is installed on floats-skegs between main and additional ground-effect wings along their longitudinal axis. Main and, if necessary, additional propulsion engines with corresponding tractor and pusher propellers are mounted, respectively, in bow and stern parts of each float-skeg. Front lifting wing with sections turnable in vertical plane is installed on floats on floats-skegs between main propulsion engines and convex saucer hull. Middle lifting wing consists of turnable sections installed on convex saucer hull. Control system includes vertical surfaces with rudders installed on stern parts of floats-skegs. Said surfaces are interconnected by rear lifting wing with right-hand and left-hand sections turnable in vertical plane and with pitch control surface. Invention improves efficiency of wing-in-ground effect craft-amphibia on air cushion, simplifies design and provides possibility of operation of craft at heights support surface exceeding height of air cushion. EFFECT: improved efficiency in operation. 7 cl, 3 dwg