FIELD: machine building.
SUBSTANCE: chassis is composed of 3D composite structure comprising bearing layers made up of thin-wall preforms to support reinforcing elements bound of binding compound. At least, one of said bearing layers is made bulky by forming stiffness ribs composed of bulged hemispheres regularly distributed over layer surface and connection two-layer stiffness ribs formed of preform sections not used in hemisphere formation. Remaining sections are used to make connection sites. Reinforcing elements represent twisted bundles of multi-fiber composite materials to be arranged between surfaces of stiffness elements. Rounded sections of bundles are located inside and around hemispheres to fill free space between stiffness elements with self-curing compound.
EFFECT: decreased weight and sizes, improved operating performances.
