Two-part beam aircraft engine attachment
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Solution Overview
Problem
The existing front engine attachment systems for aircraft engines are complex and costly to manufacture due to the requirement of a solid beam component, which is challenging to produce efficiently.
Innovation Solution
A front engine attachment system comprising a beam made of two separate plates that are fastened together, with a link-rod system attached only to the rear plate in an articulated manner, allowing for easier production and simplified shape, and incorporating a backup safety fastening point for increased safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a solid beam component is used in the front engine attachment system, then the structural strength and load-bearing capacity are ensured, but the manufacturing complexity and production time increase significantly
Solution Approach 1:
The solid beam component is divided into two separate plates: a front plate and a rear plate. The front plate is fastened to the front face of the engine pylon, while the rear plate carries the link-rod system. This segmentation simplifies manufacturing by allowing each plate to be produced independently with simpler processes, while still maintaining the required structural strength through proper fastening and load path design.
2Strength
If a solid beam component is used in the front engine attachment system, then the load-bearing capacity is maintained, but the production time and manufacturing cost increase
Solution Approach 1:
By segmenting the beam into two plates, each component can be manufactured independently using simpler and faster processes. The front plate and rear plate can be produced in parallel, and then assembled together, significantly reducing total production time compared to manufacturing a single solid beam component.
3Ease of manufacture
If the beam is made in two parts, then the ease of manufacture and production efficiency improve, but the device complexity increases due to additional assembly requirements
Solution Approach 1:
The beam is segmented into two plates that are fastened together using standard fastening methods. While this creates an assembly step, the individual components are much simpler to manufacture, and the assembly process uses conventional fasteners and connection methods, making the overall manufacturing process more efficient despite the additional assembly requirement.
4Weight of moving object
If the beam is made in two parts, then the material weight is reduced, but the structural complexity increases
Solution Approach 1:
Dividing the beam into two plates allows for weight optimization by using the minimum necessary material for each plate's specific function. The front plate only needs to attach to the pylon face, while the rear plate only needs to support the link-rod system, reducing overall material usage compared to a solid beam design.
Data Source
AI summary
A front engine attachment system for an engine of an aircraft. The front engine attachment system has an engine pylon having, in its front part, a frontal part having an attachment wall with a front face, and a front engine attachment having a beam fastened to the front face and to which a link-rod system is fastened on either side of a median plane. The beam is made up of a front plate and a rear plate that are fastened together in a removable manner. The rear plate is pressed against the front face. The front plate is disposed in front of the rear plate. Each link-rod system is fastened to the rear plate in an articulated manner by at least one first connection point and is configured to be fastened to a front part of the engine in an articulated manner by at least one second connection point.