Three-Part Beam Aircraft Engine Attachment System
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Solution Overview
Problem
The existing front engine attachment systems for aircraft engines are complex and difficult to manufacture due to their solid beam structure, which requires lengthy and intricate machining processes.
Innovation Solution
A front engine attachment system with a beam composed of three separate plates (front, intermediate, and rear plates) that are easier to produce and assemble, where the link-rod system is attached only to the intermediate plate in an articulated manner, and includes a backup safety fastening point for increased safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a solid beam structure is used for the front engine attachment, then the structural strength and load-bearing capacity are ensured, but the manufacturing complexity and production time increase significantly
Solution Approach 1:
The beam is divided into three separate plates (front plate, intermediate plate, rear plate) that can be manufactured independently and then assembled together. This segmentation allows each plate to be produced using simpler manufacturing processes while maintaining the overall structural strength through their combined configuration and fastening system.
2Strength
If a solid beam structure is used for the front engine attachment, then the load-bearing capacity is maintained, but the production time and manufacturing cost increase
Solution Approach 1:
By dividing the beam into three separate plates, each component can be manufactured simultaneously in parallel production processes, significantly reducing the overall production time compared to manufacturing a single solid beam. The assembly process using standard fastening methods further enables efficient production while maintaining load-bearing capacity.
3Stability of the object's composition
If a solid beam structure is used, then the structural integrity is ensured, but the material weight increases
Solution Approach 1:
The segmented plate structure allows for optimized material distribution and potential use of lighter materials in non-critical areas of each plate, while maintaining structural integrity through the arrangement and fastening system. This can reduce overall material usage and weight compared to a solid beam of equivalent strength.
4Strength
If a solid beam is used, then the attachment system is structurally sound, but the ease of assembly and maintenance decreases
Solution Approach 1:
The three separate plates can be assembled using standard fastening methods (bolts, rivets, or welds) rather than requiring complex single-piece manufacturing and assembly procedures. This modular approach simplifies the assembly process and enables easier maintenance or replacement of individual plates if needed.
Data Source
AI summary
A front engine attachment system for an aircraft engine, the front engine attachment system having 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 has front, intermediate and rear plates. The rear plate is pressed against the front face. The front plate is disposed in front of the rear plate. The intermediate plate is disposed between the front plate and the rear plate. Each link-rod system is fastened to the intermediate 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.