Aircraft Main Wing Segmentation for Wiring and Fuel Tank Isolation
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Solution Overview
Problem
In conventional aircraft main wing structures, the wiring and piping connecting the engine to the fuselage pass through the landing device accommodating chamber, leading to interference issues and preventing the installation of a fuel tank in that area, which compromises operational reliability and space utilization.
Innovation Solution
The main wing structure is divided into regions by spars and ribs, with a specific area serving as a wiring/piping accommodating chamber, a landing device accommodating chamber, and a fuel tank, using guide holes to manage the wiring and piping, thereby isolating these components and optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wiring and piping are routed through the landing device accommodating chamber, then connection between engine and fuselage is established, but interference occurs during landing device operation
Solution Approach 1:
The patent segments the main wing internal space into distinct accommodating chambers: a wiring/piping accommodating chamber and a landing device accommodating chamber. This spatial segmentation isolates the wiring and piping from the landing device, preventing interference during landing device operation while maintaining reliable electrical and pneumatic connections between the engine and fuselage.
2Reliability
If wiring and piping are routed through the main wing interior, then connection between engine and fuselage is established, but fuel tank installation is prevented
Solution Approach 1:
The patent divides the main wing interior into functionally independent chambers: a dedicated wiring/piping accommodating chamber for routing connections, and a separate fuel tank accommodating chamber for fuel storage. This segmentation allows both the wiring/piping connection and fuel tank installation to coexist without interference, maximizing fuel tank capacity while maintaining connection reliability.
Solution Approach 2:
The patent utilizes the spanwise dimension of the main wing by positioning the wiring/piping accommodating chamber adjacent to the pylon and extending toward the leading edge, while placing the fuel tank in a different spanwise and chordwise region. This dimensional arrangement allows both systems to occupy the three-dimensional space efficiently without interference.
3Reliability
If wiring and piping are distributed within the main wing, then connection is provided, but maintainability deteriorates
Solution Approach 1:
The patent consolidates wiring and piping into a dedicated wiring/piping accommodating chamber rather than distributing them throughout the main wing. This segmentation provides a centralized access point for maintenance operations, improving maintainability while ensuring reliable connections between the engine and fuselage.
Solution Approach 2:
The wiring/piping accommodating chamber acts as an intermediary space that facilitates maintenance operations. By providing a dedicated chamber with access holes in the skin and spars, maintenance personnel can access and service wiring and piping without disassembling the entire wing structure, thereby improving maintainability.
4Reliability
If dead space in the main wing is not utilized, then wiring and piping can be routed, but fuel tank capacity is reduced
Solution Approach 1:
The patent creates a multi-functional wing structure where the wiring/piping accommodating chamber serves both as a routing pathway for connections and as a space-defining element that enables adjacent fuel tank accommodation. This universal design approach ensures system isolation reliability while maximizing fuel tank capacity by converting what would be dead space into usable fuel storage volume.
Data Source
AI summary
Plural regions are defined within a main wing by a plurality of spars and ribs. Of these regions, predetermined regions extending from a main wing connecting portion of the pylon to an internal space of a leading edge skin are used as wiring/piping accommodating chambers for collectively accommodating wiring and piping which provide communication between an engine and a fuselage, a predetermined region adjacent to parts of the wiring/piping accommodating chambers is used as a landing device accommodating chamber for accommodating a landing device and predetermined regions adjacent to other parts of the wiring/piping accommodating chambers are used as fuel tanks. Thus, the maintainability is improved as compared with the case where the wiring and the piping are distributed within the main wing. In addition, because the wiring/piping accommodating chambers are isolated from the landing device accommodating chamber and the fuel tanks, the operational reliability can be improved.