POWER STRESS BOXES AND METHODS TO OBTAIN THEM Russian patent published in 2018 - IPC B64C3/18 B64C3/20 B29C70/30 B32B3/12 B32B5/02 B32B5/18 

FIELD: airpower.

SUBSTANCE: power stress box contains upper and lower composite complex sandwich panels. Panels include sheet casings forming a sandwich structure with one or more aggregates and adjacent dense packages oriented in the axial direction. The stress box additionally contains plenty spars. Each spar has a wall and wall fastening elements and the long side of the spar is located in the axial direction. Plenty spars are connected to the panels with wall fastening elements located near the dense packages. Sheet casings are made with the ability to withstand the main torsional and compressive loads under shear and inessential axial loading. Dense packages are designed to withstand the entire substantial bend of box under axial tensile and compressive loading. The air vehicle comprises a power stress box. The method is for producing bonded stress box for an air vehicle.

EFFECT: improved composite bonded stress boxes for an air vehicle.

25 cl, 13 dwg