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

FIELD: aeronautical engineering; wing-in-ground-effect craft. SUBSTANCE: proposed craft has low-aspect-ratio ground-effect wing, high- aspect-ratio lifting wing made up of symmetrical right-hand and left-hand sections, propulsion engines with propulsive air screws, control system with stabilization devices in form of vertical tail with rudders coupled with each other by horizontal tail with pitch control surface. Proposed craft is provided with engine compartments for propulsion engines with propulsive airscrews mounted on convex floats by means of pylons. Vertical tail with rudder are installed on rear end faces of airscrews. Convex body is made saucer-type being installed on inner side surfaces of engine compartment. Ground-effect wing is made of convex nose and stern symmetrical sections with trapezoidal and curvilinear outlines in plan, respectively, secured on engine compartments and in contact with above indicated body. Each elastic float- skeg is made gastight, in form of cylindrical pneumatic cylinder with inner space divided into separate isolated compartments and provided with fitted- on rigid carrying member connected with engine compartment pylon thrusting against said member. Lifting wing sections are demountable, being secured on longitudinal end faces of nose section of low-aspect-ratio ground- effect wing. Invention simplifies design of craft with provision of possibility of its operation at heights from support surface exceeding height of air cushion created by craft. EFFECT: improved efficiency in operation. 4 cl, 3 dwg