FIELD: aeronautics.;SUBSTANCE: invention relates to aeronautics. High-altitude airship has a semi-rigid structure, the inner and outer shells, the interlayer between which is filled with air, the inner shell is divided into compartments and filled with carrier gas. There are two longitudinal lateral rigid elements connected in the aft part with plumage, and in the bow with nasal reinforcement. Inner shell has around the perimeter outer side catenary belts, connected by cables with longitudinal lateral rigid elements. Lower part of the inner shell up to the level of the external catenary belts is movable and deformable in such a way that the gas-filled volume of the inner shell can vary from 5 % to 100 % of the volume of its full execution. Inner sheath may have internal catenary belts and screeds.;EFFECT: invention is aimed at increasing the convenience of maintenance.;1 cl, 4 dwg
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