Monoblock Vibration Filter Mechanism for Aircraft Fuselage
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Solution Overview
Problem
Existing vibration filter mechanisms for aircraft are complex, heavy, and costly due to numerous parts, which complicates assembly and increases weight, ultimately degrading flight performance.
Innovation Solution
A simplified vibration filter mechanism with a pair of filter members secured via pivot connections and resilient return means forming a single, elastically deformable one-piece unit, eliminating the need for fasteners and reducing weight and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vibration filter mechanisms with multiple distinct parts are used, then vibration filtering effectiveness is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent merges multiple distinct parts (filter members and resilient return means) into a single monoblock structure. This integration eliminates the need for separate components and fasteners while maintaining the vibration filtering function, directly resolving the contradiction between filtering effectiveness and device complexity
Solution Approach 2:
The monoblock structure performs multiple functions simultaneously: it provides vibration filtering, structural support, and resilient return forces all in one component. This multi-functionality eliminates the need for separate dedicated parts, reducing overall device complexity while maintaining effectiveness
2Reliability
If traditional vibration filter mechanisms with multiple parts and fasteners are used, then vibration filtering is achieved, but weight increases
Solution Approach 1:
By combining multiple parts into one monoblock structure, the patent eliminates the weight of fasteners, joints, and additional structural elements required to assemble separate parts. The single integrated component achieves the same filtering effectiveness with reduced total weight
Solution Approach 2:
The patent extracts and eliminates unnecessary components (fasteners, separate resilient elements, multiple filter members) from the traditional design, retaining only the essential vibration filtering function in a simplified monoblock form, thereby reducing weight
3Reliability
If traditional vibration filter mechanisms with numerous parts are used, then vibration filtering is effective, but assembly time and production cost increase
Solution Approach 1:
The monoblock structure allows the entire filter mechanism to be installed as a single unit, eliminating time-consuming assembly operations for fasteners and multiple components. This directly improves assembly speed and production efficiency while maintaining filtering effectiveness
Solution Approach 2:
The filter mechanism is pre-assembled and integrated into a single monoblock structure during manufacturing, so that during installation, no further assembly is required. This preliminary integration of all components into one unit dramatically reduces on-site assembly time
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
The solution simplifies assembly, reduces weight, and maintains effective vibration filtering without degrading aircraft performance, enhancing comfort and equipment longevity.
Implementation Method 1
resilient return means suitable for deforming during relative movement in rotation between at least one of the filter members and the first structure, the resilient return means presenting predetermined stiffness suitable for generating a return force opposing the relative movement in rotation
Implementation Method 2
couple the movement of a moving mass secured to the piece of equipment in order to counter the dynamic forces (excitation) by inertial effects
Data Source
AI summary
A vibration filter mechanism between a fuselage and a piece of equipment of the aircraft. The filter mechanism comprises a pair of filter members, each secured with a first structure that is to be connected to the fuselage and with a second structure of the piece of equipment. Each filter member is secured with the first structure via a first pivot type connection having one degree of freedom to move in rotation and with the second structure via a second pivot type connection having one degree of freedom to move in rotation. The filter mechanism includes resilient return means for deforming during relative movement in rotation between at least one of the filter members and the first structure. The resilient return means presents a predetermined stiffness suitable for generating a return force opposing the relative movement in rotation between at least one of the filter members and the first structure.