Aircraft Landing Gear Door Assembly Jig
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Solution Overview
Problem
The current aircraft assembly process for landing gear components is slow, complex, and risky due to repeated extension and retraction of the landing gear, which can lead to damage and safety concerns, and requires precise alignment to ensure a clean aerodynamic surface when the gear is retracted.
Innovation Solution
An aircraft assembly jig with adjustable members and a lifting device that allows for independent positioning of components, enabling pre-alignment and simultaneous installation, reducing the need for repeated gear extension and retraction, and ensuring correct alignment with the aircraft's contours.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If components are installed sequentially with repeated landing gear extension and retraction for alignment, then alignment precision is improved, but assembly time increases and safety risk worsens
Solution Approach 1:
The jig allows components to be pre-positioned and aligned on the ground before installation. The elevation platform and adjustable jig members enable precise alignment to be achieved in advance, eliminating the need for repeated landing gear extension and retraction during the assembly process.
Solution Approach 2:
The jig acts as an intermediary device between the components and the aircraft. It provides a stable reference framework with adjustable members that can precisely position components relative to each other and to the aircraft, replacing the need to use the landing gear itself as the alignment reference.
2Manufacturing precision
If repeated landing gear extension and retraction is performed for alignment, then alignment precision is improved, but safety risk worsens
Solution Approach 1:
Alignment is performed in advance on the ground using the jig, where components can be safely positioned and adjusted without the landing gear moving. This eliminates the safety risks associated with repeated extension and retraction operations during the alignment process.
Solution Approach 2:
The jig serves as a safe intermediary structure that provides stable support and precise positioning for components. It replaces the landing gear as the reference structure, eliminating the need to repeatedly move the landing gear and associated safety risks.
3Manufacturing precision
If traditional sequential installation method is used, then alignment precision can be achieved, but device complexity increases
Solution Approach 1:
The jig combines multiple alignment and positioning functions into a single integrated device. Multiple adjustable jig members can simultaneously position multiple components, and the elevation platform can lift the entire assembly as one unit, replacing the complex sequential process of individual component installation and alignment.
Solution Approach 2:
The jig enables all alignment operations to be performed in advance in a single setup, rather than requiring multiple separate alignment operations during installation. This consolidates the complex sequential process into a simpler pre-positioning operation followed by direct installation.
4Productivity
If components are pre-positioned using the jig, then installation speed is improved, but jig complexity increases
Solution Approach 1:
The jig is divided into modular components including multiple independently adjustable jig members and an elevation platform. Each segment can be independently adjusted and positioned, allowing flexible configuration for different component arrangements while maintaining overall system manageability.
Solution Approach 2:
The jig incorporates adjustable members that can be dynamically repositioned to accommodate different component sizes and positions. The elevation platform provides dynamic height adjustment capability, allowing the jig to adapt to various installation requirements while maintaining structural integrity.
Data Source
AI summary
An aircraft assembly jig for fitting a number of landing gear door components to an aircraft. The jig includes a lifting device for elevating the components towards the aircraft for fitting, and a number of adjustable platforms attached to the lifting device, each of which holds one of the landing gear door components. The adjustable platforms allow each of the components to be positioned independently so that when elevated together towards the aircraft by the lifting device, each component is correctly and independently aligned and positioned for installation at the aircraft.