Aircraft System Rack Connecting Rod with Ball-Jointed Articulations
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Solution Overview
Problem
The design and standardization of aircraft system racks are hindered by the varying spacing of crossbeams in different aircraft models, requiring custom dimensions for each installation.
Innovation Solution
The system racks are connected to the aircraft's structure and floor using upper and lower connecting systems, where the upper connecting system features a connecting rod with ball-jointed articulations that allow uprights to be positioned independently of crossbeams, simplifying design and enabling standardization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If system racks are connected to crossbeams with fixed spacing, then load transmission is correct, but rack dimensions must be customized for each aircraft model
Solution Approach 1:
The connecting rod is made telescopic with adjustable length, allowing it to adapt to different distances between uprights and crossbeams. This dynamic adjustment capability enables the same rack design to be used across different aircraft models with varying crossbeam spacing, while still maintaining correct load transmission alignment.
Solution Approach 2:
The length parameter of the connecting rod is made variable through the telescopic mechanism. By changing the rod length to match the specific spacing requirements of different aircraft models, the system achieves both standardized rack design and proper load transmission for each application.
2Reliability
If crossbeam spacing varies between aircraft models, then structural requirements are met, but system rack design complexity increases
Solution Approach 1:
The telescopic connecting rod serves multiple functions: it maintains structural compliance by adapting to different crossbeam spacings, enables a single standardized rack design to be used across various aircraft models, and simplifies the overall system by eliminating the need for multiple rack variants.
Solution Approach 2:
The connecting rod is divided into telescopic segments that can be adjusted independently. This segmentation allows the rod to be configured for different spacing requirements without changing the rack design, thereby reducing design complexity while maintaining structural reliability.
3Strength
If uprights are positioned according to crossbeam spacing, then load transmission is optimized, but production and installation efficiency decreases
Solution Approach 1:
The telescopic connecting rod is pre-equipped with adjustment mechanisms that allow for quick configuration during installation. This preliminary design feature enables installers to rapidly adjust the rod length to match the specific aircraft model without requiring complex customization or lengthy alignment procedures, thereby maintaining load transmission optimization while improving installation efficiency.
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 solution allows for standardized system rack design, simplifying production and installation across different aircraft models by enabling upright positioning irrespective of crossbeam spacing, enhancing design efficiency and flexibility.
Implementation Method 1
a first end 28.2 connected by a first ball-jointed articulation to the system rack 20 and a second end 28.3 connected by a second ball-jointed articulation to one of the crossbeams 18 of the floor 12
Data Source
AI summary
An aircraft including at least one system rack positioned under a floor and including a series of vertical first uprights, distributed in a direction parallel to the longitudinal axis of the aircraft. The aircraft includes at least a first upper connecting system connecting at least one of the first uprights and a rail of the floor oriented parallel to the longitudinal axis. In so far as the first uprights of the system rack are not connected to the crossbeams of the floor, they can be positioned irrespective of the position of the crossbeams, and this contributes to simplifying the design of the system racks and allows these to be standardized.