An aircraft cabin structure with large openings

Abstract

The invention discloses an aircraft cabin structure with a large opening, which is a conical-cylindrical riveted structure, the upper part is a conical section, the lower part is a cylindrical section, and the opening is located in the cylindrical section; The structure comprises a skin, a plurality of frame rings arranged horizontally and a plurality of stringers arranged vertically, the plurality of frame rings sequentially comprise a conical segment front end frame from the top to the bottom, The middle frame of the cone section, the connecting frame of the cylinder cone, several middle frames of the cylinder section, and the rear end frame of the cylinder section are respectively provided with a cone section reinforcing stringer, a front joint, a beam of the cylinder section, and a rear joint on each side of the left and right sides of the opening from the top to the bottom. The middle frames of the cylinder section on the upper and lower sides of the opening are respectively arranged as the middle frame I of the cylinder section and the middle frame V of the cylinder section. Various reinforcing structures are arranged around the large-scale opening of the cabin body to realize the transmission and diffusion of concentrated forces on both sides of the opening.

Description

technical field [0001] The invention relates to an aircraft cabin structure, in particular to an aircraft cabin structure with large openings. Background technique [0002] Due to general assembly requirements or other functional requirements, openings must be provided on the aircraft cabin structure for personnel entry and exit, final assembly operations, or other functions. The opening of the cabin body is designed according to the requirements, and the size is different. The length and width of the conventional operating opening are about 500mm, and the reinforcing effect can be achieved by setting reinforcing stringers on both sides of the opening; while the large opening has a large span in the axial and circumferential directions, which seriously weakens the uniformity of the structure and reduces the The strength and rigidity of the structure, and the large concentrated force added on both sides of the large opening, have a great adverse effect on the load bearing of...

AI Technical Summary

Problems solved by technology

The length and width of the conventional operating opening are about 500mm, and the reinforcing effect can be achieved by setting reinforcing stringers on both sides of the opening; while the large opening has a large span in the axial and circumferential directions, which seriously weakens the uniformity of the structure and reduces the The strength and rigidity of the structure, and a large concentrated force is added on both sides of the large opening, which has a great adverse effect on the load bearing of the cabin structure

Regarding how to solve the load-bearing problem of the cabin structure with large openings, there is currently no description or report of relevant technologies, and no similar domestic materials have been collected yet.

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