Patent ID: 7334756

Claim:
Ground-effect craft, comprising: a center wing that is made with aerodynamic profiles on the longitudinal sections thereof; a cigar-shaped fuselage, that is mounted on the center wing; a crew cabin and cargo-passenger cabin, that are arranged on the center wing; hollow hermetical longitudinal beams, that are mounted on the periphery of the center wing along its sidewalls; inflatable shock-absorbing balloons, that are mounted under the longitudinal beams; two keels with rudders, that are mounted on the ends of the longitudinal beams; a stabilizing fin, that is mounted on the keels and includes an elevation rudder on the area between the keels, and on peripheral consoles it is provided with ailerons; a thrust propeller for a horizontal thrust, that is contained in an annular external cowl; an engine of the propeller, that is mounted inside a tail cowl of the fuselage; and a complex of taking off and landing means, including means for a static air cushion implementation; wherein the center wing is made with: an aspect ratio, that is within the range from 0.5 to 0.6; an angle of axial chord twisting with respect to a rear edge, which is within the range from of 3° to 5°; an angle of end chord twisting with respect to a rear edge that ranges from 1° to 2°; a sweep of front edge, corresponding to its rounding in the horizontal surface radially from 0.7 to 0.9 of a span of the center wing; a lateral dihedral angle V, that is within the range from −4° to −6° along the front edge; a chord/thickness ratio along the axis of the center wing, which ranges from 9% to 10%, and at end chords it is within the range from 7% to 8%.