Abstract: The invention relates as a whole to composite structures and methods of forming thereof and can be used in particular, in the manufacture of bodies and compartments of flying vehicles used in rocketry and aeronautics.A composite shell shaped as a body of revolution comprises a plurality of multilayer elements forming its structure consisting of a set of crisscrossing strips. Said strips are made of a plurality of fibers formed as a "skin-core" structure and impregnated with a thermoplastic or resilient-elastic binder. The fibers formed as a "skin-core" structure are produced by impregnating the fiber filaments with a thermosetting binder and curing it. Multilayer air-tight shells and multilayer shells of a rib-cellular structure can be produced from said strips (FIG. 1, FIG. 10).