Abstract: The invention relates as a whole to composite structures and may be used, in particular, in the manufacture of bodies or compartments of flying vehicles used in rocketry and aeronautics.A composite shell shaped as a body of revolution comprises a load-bearing framework of a multilayer structure consisting of intersecting spiral and annular strips arranged at intervals and forming cross nodes and stiffening ribs therebetween, an outer load-bearing shell, fine-cellular layers consisting of spiral and annular strips therebetween, surrounding the stiffening ribs of the framework in the directions thereof, and having the width exceeding the width of the strips in the ribs and forming their bearing flanges. The spiral and annular strips of the framework and of the fine-cellular layers, and the outer load-bearing shell are made of unidirectional fibers and a polymer binder.

Abstract: A composite transverse wing rib shaped as a multi-layered flat panel comprises a cellular-ribbed structure of intersecting rectlinear ribs whose lengthwise directions are angled in opposite directions at oblique angles to a longitudinal dimension of the wing rib. The ribs have widthwise directions that extend between opposite side surfaces of the cellular-ribbed structure. The cellular-ribbed structure includes projections having flat faces arranged on an outer frame of the structure. The wing rib also includes other layers overlying opposite side surfaces of the cellular-ribbed structure and the projections. The outer layers comprise a net of intersecting small composite belts oriented along the oppositely angled directions of the rectilinear ribs and intersecting at the cross intersections of the rectlinear ribs. The cellular-ribbed structure and outer layers are formed of high-module yarns bound by a polymer binder.

Abstract: The inventions relate to the field of machine manufacturing and more specifically, to shell-type construction of base members used in aviation engineering and rocketry, which operate under conditions of combined stressed state, to the methods of and mandrels for their manufacture.A load-carrying tube-shell comprises a cellular framework 1 made of spiral and annular strips 4, 5 crossing each other to define layers 3 of systems repeated over the thickness of the wall thereof so that stiffening ribs 6, 7 with criss-crosses 8, 9, 10 are thus formed, and outer coating layers 2 respectively made of unidirectional filaments 11 bound by a cured polymeric binder 12. Damping-absorbing layers 14 of resilient-elastic material such as rubber or polyurethane are disposed between the layers 3.A method of the manufacture of the tube-shell comprises a step of introducing intermediate continuous forming strips 20 placed beneath the layers 4, 5 laid down under tension.