AIR-CUSHION AMPHIBIOUS VEHICLE Russian patent published in 2001 - IPC

FIELD: aircraft industry; wing-in-ground effect craft. SUBSTANCE: vehicle has at least one hull with ground-effect wing, traction engine, pusher propeller enclosed in ring holder and control system in form of heading and trim stabilization and control devices made as horizontal planes and vertical rudders. Port-tunnel made behind propeller in direction of hull movement communicates with space of air cushion chamber. Stabilizing plates in form of floats with ailerons are secured on each side edge of wing leading part. Plates are tilted in vertical plane through α = 30^°-60^°. Wing has low aspect ratio, semielliptical contour in plan and is made convex. Lower part of ring holder of pusher propeller is lowered through 0.35 - 0.55 of its diameter D into port-tunnel of hull. Cross- section area S is 3.8-5.2 times smaller than support area S₁ of air cushion chamber. Vertical rudders are displaced forward relative to horizontal planes secured in aft part of hull. Maximum height H₁ of air cushion chamber and area S₂ of lower surface of horizontal planes are equal to 0.2-0.6 of height H of hull maximum cross section and 0.3-0.45 of area S₃ of horizontal projection of ground-effect wing, respectively. Bottom of hull can be furnished with detachable protective ski and can provided with cross planing step. EFFECT: possibility of flying at heights exceeding height of air cushion created by vehicle. 3 cl, 3 dwg