Load-Bearing Fairing Element for Aircraft Flap Mechanism
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Solution Overview
Problem
The existing load-bearing fairing elements for aircraft flap adjustment mechanisms are costly and labor-intensive to manufacture due to the need for separately produced and connected stiffening elements, which compromises their aerodynamic characteristics and lightweight construction.
Innovation Solution
A fairing element with a shell-shaped housing made from fiber composite materials, featuring a U-shaped profile and a load-bearing bridge element that integrates stiffening components and mechanical components, allowing for a simpler manufacturing process while maintaining aerodynamic and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a multitude of separately produced stiffening elements are integrated into the fairing element, then the load-bearing function and structural strength are improved, but the manufacturing cost and complexity increase significantly
Solution Approach 1:
The patent combines multiple stiffening elements (first and second stiffening elements) into a single integrated bridge element that is produced as one piece. This merging eliminates the need for separate production and assembly of multiple components, reducing manufacturing complexity while maintaining the load-bearing function through the integrated structural design of the bridge element with its specific geometric features.
2Strength
If multiple separate components are connected to construct the load-bearing fairing element, then the structural integrity is improved, but the manufacturing time and labor intensity increase
Solution Approach 1:
The patent segments the fairing element into functionally distinct but integrally connected parts: the bridge element, first cover panel, and second cover panel. These segments are designed to be produced separately as simplified components and then assembled through straightforward connection means, maintaining structural integrity while enabling more efficient manufacturing compared to producing a single complex integrated structure.
3Strength
If the fairing element is designed with complex internal structures for load-bearing, then the structural strength is improved, but the aerodynamic characteristics and lightweight construction are compromised
Solution Approach 1:
The patent employs thin-walled shell structures for the bridge element and cover panels that provide adequate load-bearing capacity through optimized geometric shapes and material distribution. The bridge element features a top surface and bottom surface with specific curvature and thickness variations that maintain structural strength while minimizing material usage and weight, consistent with aerodynamic design principles.
4Strength
If separate stiffening elements are individually connected to the shell-like fairing housing, then the load-bearing capacity is improved, but the manufacturing cost and elaborateness increase
Solution Approach 1:
The patent merges multiple stiffening functions into the bridge element, which is produced as a single integrated component rather than assembling multiple separate stiffening elements. This merging simplifies the manufacturing process by eliminating individual production and connection steps for each stiffening element, while the bridge element's integrated design maintains the necessary load-bearing capacity through its unified structural configuration.
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
A load-bearing fairing element (2) for a flap adjustment mechanism of an aircraft comprises a shell-shaped fairing housing (4) with an at least partly U-shaped profile with an open side, a closed side, and a direction of main extension (x), at least one first cover panel (14) that along the direction of main extension (x) covers part of the open side, and a load-bearing bridge element (24). The bridge element (24) is arranged in the fairing housing (4) and with a base area (26) conforms so as to be flush against an internal surface (28) of the fairing housing (4) and extends towards the open side. The bridge element (24) comprises an essentially planar cover area (30) that covers the base area (26) on the open side in order to produce a closed profile contour that is circumferential on the direction of main extension (x). The bridge element (24) comprises means for holding a shaft feed-in (32) of a central flap drive and means for holding an adjustment mechanism (51) that is couplable to the shaft feed-in (32). Consequently there is no need to provide complex stiffening structures within the fairing element.