T. Burdun, A. V. Kreptiuk RATIONAL DESIGNING OF COMPOSITE TOROIDAL PRESSURE HULL FOR OCEAN ENGINEERING Е. <...> Крептюк РАЦИОНАЛЬНОЕ ПРОЕКТИРОВАНИЕ КОМПОЗИТНОГО ПРОЧНОГО КОРПУСА ТОРОИДАЛЬНОЙ ФОРМЫ ДЛЯ ТЕХНИЧЕСКИХ СРЕДСТВ ОСВОЕНИЯ ОКЕАНА The paper presents a formulation and an algorithm of designing calculation of a pressure hull made from polymer composite materials for underwater equipment, based on the requirements of strength and static stability formalized as the main criterion of quality of the pressure hull – the weight-to-displacement ratio W/D, and the example of calculation of the rational structure of the new composite hull – the hull in the shape of a round closed torus. <...> In the designing calculation, the variability of the hull thickness which is the result of torus designing by the method of winding, is taken into account. <...> The restrictions on the strength are defined as a Mises – Hill criterion, while on the static stability – by the upper critical pressure. <...> The toroidal pressure hull made from polymer composite materials using longitudinal-transverse winding has been taken as an example for calculation. <...> Key words: underwater vehicle, designing, toroidal pressure hull, filament winding, external hydrostatic pressure, buckling, strength, carbon-fiber reinforced plastic, glass-fiber reinforced plastic. <...> В качестве примера для расчета был взят тороидальный прочный корпус, выполненный продольно-поперечной намоткой из полимерных композиционных материалов. <...> Ключевые слова: подводная техника, проектирование, тороидальный прочный корпус, намотка, внешнее гидростатическое давление, потеря устойчивости, прочность, углепластик, стеклопластик. <...> Emergence of new technologies and materials contributes to realization of various architectural and constructive configurations of submersible structures and underwater vehicles by designers. <...> For the last decades the most various shapes and sizes of autonomous underwater vehicles, including torpedo shapes, laminar flow bodies, streamlined rectangular styles and multihull vehicles, are tested [1]. <...> The original projects of underwater drilling rigs, stations and submersibles with a pressure hull of toroidal shape [2], for example, underwater vehicle type "diving saucer" with increased maneuverability (Fig. 1) [3] can become one of the new solutions. <...> Complex combination of design and constructive solutions in the underwater vehicle with toroidal pressure hull (Fig. 1) will provide the improved maneuvering motions, the stability of motion, the dynamic <...>