Aircraft Reaction Link Metal-Composite Bonded Frame
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Solution Overview
Problem
Current aircraft reaction links made of light metals like titanium alloy face limitations in achieving further weight reduction while maintaining strength and rigidity, especially under multi-directional loads.
Innovation Solution
The use of a composite structure combining a metal frame with a fiber-reinforced plastic composite frame, where the metal frame extends from the fulcrum shaft attachment portion to the cylinder attachment portion, and the composite frame is bonded to the metal frame on inner or outer lateral faces, forming a double tube configuration to enhance rigidity and disperse loads efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal frame structure is used to ensure strength and rigidity, then structural strength is improved, but weight increases
Solution Approach 1:
The patent applies composite materials by bonding a metal frame to a composite frame made of fiber-reinforced plastic. The metal frame provides strength and rigidity, while the composite frame reduces weight. This combination resolves the contradiction by achieving both structural strength and weight reduction through material composition rather than using metal alone.
2Stability of the object's composition
If a composite structure with double tube configuration is used, then rigidity against multi-directional load is improved, but device complexity increases
Solution Approach 1:
The patent merges the metal frame and composite frame into an integrated structure where they are bonded together to form a unified reaction link. The double tube configuration (metal frame surrounding composite frame) combines both materials into a single structural unit that provides enhanced rigidity against multi-directional loads while maintaining manageable complexity through functional integration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration achieves weight reduction while securing strength and rigidity equivalent to or greater than conventional metal links, with improved resistance to multi-directional loads and enhanced geometrical moment of inertia, thereby improving the overall structural integrity of the aircraft reaction link.
Implementation Method 1
the pair of linear portions and the composite frame that is made of fiber-reinforced plastic and that is provided so as to extend at least in the pair of linear portions are bonded together
Data Source
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AI summary
An aircraft reaction link includes a pair of linear portions (22a,22b), a coupling portion (23) that couples ends of the pair of linear portions on the same side to each other, a fulcrum shaft attachment portion (24), and a cylinder attachment portion (25a,25b). A metal frame (29) that is made of a metallic material and that is provided so as to extend across the coupling portion and the pair of linear portions and a composite frame (30) that is made of fiber-reinforced plastic and that is provided so as to extend at least in the pair of linear portions are bonded together, and thereby, the pair of linear portions and the coupling portion are formed. The metal frame is provided so as to extend from the fulcrum shaft attachment portion to the cylinder attachment portion.