Aircraft Nose Fuselage Assembly Using a Shaping Floor Module
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Solution Overview
Problem
The existing assembly method for aircraft nose fuselage portions is complex and requires precise alignment and shaping of fuselage components during assembly, which is time-consuming and labor-intensive, especially due to the need for lengthy moulding/rigging operations to maintain the desired contour.
Innovation Solution
The method involves a sequence of assembly steps followed by the introduction and fastening of a floor module with a predetermined width into the fuselage body, allowing the floor module to shape the fuselage body during assembly, simplifying the process by deferring the establishment of the definitive shape until the final stages and enabling flexible deformation to achieve the correct contour.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional assembly methods with sequential fuselage component assembly and continuous moulding/rigging operations are used, then the desired contour shape can be maintained during assembly, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The floor module is manufactured in advance with a predetermined width that corresponds to the desired fuselage contour. This preliminary preparation allows the floor module to serve as a pre-formed shaping tool during assembly, eliminating the need for complex continuous moulding operations and reducing assembly process complexity while maintaining contour precision
Solution Approach 2:
The floor module acts as an intermediary element between the assembled fuselage components and the final desired shape. By introducing this intermediate component with predetermined dimensions, the complex task of shaping the entire fuselage during assembly is simplified to merely installing this single floor module, thereby reducing device complexity while ensuring manufacturing precision
2Manufacturing precision
If precise alignment and moulding operations are performed at each assembly step, then the desired fuselage shape is achieved, but the assembly time and operational complexity increase significantly
Solution Approach 1:
The floor module is pre-manufactured with the exact predetermined width required for the final fuselage shape. This preliminary action transfers the precision requirement from multiple assembly operations to a single manufacturing process, allowing faster assembly operations while maintaining shape accuracy
Solution Approach 2:
The complex moulding and shaping operations are extracted from the sequential assembly process and consolidated into the preliminary manufacturing of the floor module. This extraction allows the assembly process to focus solely on joining components and installing the floor module, significantly improving assembly speed while preserving shape accuracy through the pre-formed floor module
3Ease of operation
If the fuselage body is assembled without a predetermined floor module, then assembly flexibility is maintained, but additional shaping operations are required after assembly
Solution Approach 1:
The floor module serves multiple functions simultaneously: it provides the required floor structure, maintains the predetermined width dimension, and shapes the fuselage contour. This multi-functionality eliminates the need for separate shaping operations after assembly, reducing device complexity while maintaining assembly flexibility
Solution Approach 2:
The floor structure and the shaping function are merged into a single floor module component. By combining these functions that would otherwise require separate operations or components, the overall device complexity is reduced while the assembly process remains flexible and straightforward
Data Source
AI summary
An assembly method includes a succession of assembly steps of assembling fuselage components of the fuselage portion of the aircraft, for example the nose of the aircraft, to form a fuselage body, a mounting step of introducing, into the fuselage body thus formed, a floor module having at least a predetermined width, and which can be provided with items of equipment, and a fastening step of fastening the fuselage body to the floor module such that the floor module shapes the final shape of the fuselage body and the assembled fuselage portion is obtained, the floor module, which has at least a suitable predetermined width, making it possible, when it is incorporated into the fuselage body, to provide the fuselage body, which is slightly flexible, with its desired and definitive shape corresponding to the desired and definitive shape of the assembled fuselage portion.