Wing connection device, aircraft and wing connection method

By adopting a combination structure of a three-pronged joint and a rear support plate in the wing connection device, the problems of low structural efficiency and easy fatigue failure in the prior art are solved, the load is evenly distributed and the safety is improved, the assembly process is simplified and the overall performance of the aircraft is improved.

CN115946841BActive Publication Date: 2026-06-26COMMERCIAL AIRCRAFT CORP OF CHINA LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
COMMERCIAL AIRCRAFT CORP OF CHINA LTD
Filing Date
2023-01-31
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing wing connection devices suffer from problems such as low efficiency, heavy weight, easy fatigue failure, and complex assembly in their structural design. In particular, the load transfer is uneven at the connection between the outer wing and the center wing, resulting in low structural efficiency and insufficient safety.

Method used

The structure adopts a combination of a three-pronged joint and a rear support plate. The three-pronged joint includes a first, second, and third joint that are fixed to the central wing, the outer wing rear spars, and the connecting rib web, respectively. The rear support plate is fixed to the rear spars frame of the central wing. The load is distributed through the rear support plate and transmitted through the fuselage frame. The design of the rear spars frame with reinforcing ribs is combined to improve the structural compactness and sealing.

Benefits of technology

It improves structural efficiency, simplifies the assembly process, avoids potential fatigue failure problems, enhances the reliability and safety of connections, reduces stress concentration, and improves the overall performance of the aircraft.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a wing connection device for connecting an outer wing to a central wing and comprising a triple joint comprising a first joint, a second joint and a third joint, wherein the first joint is fixed to a central wing rear spar of the central wing, the second joint is fixed to an outer wing rear spar of the outer wing and the third joint is fixed to a docking rib web of the outer wing, and a rear strut plate fixed to a rear spar frame of the central wing. In this way, by fixing the rear strut plate to the rear spar frame of the central wing, the load from the outer wing can be spread, so that the stress level is reduced, the structural efficiency is improved and the deformation of the connection structure is reduced. For example, the rear strut plate spreads the upward load and spreads the load to the fuselage frame and via the fuselage frame to the fuselage. The invention also relates to an aircraft comprising such a wing connection device and to a method of connecting wings.
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