Aircraft Engine Rear Suspension System for Detachment Prevention
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Solution Overview
Problem
In aircraft propulsion units, the rear part of the jet engine core can become detached from the front part during a malfunction, leading to potential loss and damage, as existing systems do not effectively maintain connection and stability in such scenarios.
Innovation Solution
A suspension system is introduced that connects the pylon and the rear part of the jet engine core, featuring a length greater than the distance between anchoring points, with connecting elements and joints allowing for pivot axes parallel to the engine axis, ensuring the rear part remains attached to the pylon even if detached from the front part, and incorporating flexible and deformable elements for weight support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rear part of the jet engine core is offset toward the rear end relative to the rear engine mount, then the suspension system can be positioned between the rear engine mount and the rear end to prevent detachment, but the device complexity increases due to the additional suspension system components
Solution Approach 1:
The suspension system is divided into separate functional components: a suspension element connecting the rear part to the pylon, and a separate engine mount system. This segmentation allows the suspension function to be independently implemented without redesigning the entire engine mount system, thus improving reliability while managing complexity.
Solution Approach 2:
The suspension system acts as an intermediary element between the rear part of the jet engine core and the pylon. It provides a dedicated connection path that maintains the rear part's position and prevents detachment, while allowing the primary engine mount system to continue its normal function of supporting the entire engine assembly.
2Adaptability or versatility
If the suspension system has a length greater than the distance between anchoring points, then flexible and deformable elements can accommodate movement and maintain connection during malfunctions, but the stability of the object's composition decreases due to the increased flexibility
Solution Approach 1:
The suspension system is designed with dynamic characteristics, allowing it to flex and deform within controlled limits. The suspension element can accommodate movements of the rear part relative to the pylon while maintaining connection, providing adaptability to malfunction conditions while preserving essential stability through its anchored configuration.
Solution Approach 2:
The suspension system incorporates flexible elements that can deform to accommodate relative movement between the rear part and the pylon. These flexible components maintain the connection integrity during malfunctions while allowing necessary motion, balancing adaptability with stability.
3Adaptability or versatility
If joints with pivot axes parallel to the engine axis are incorporated, then the rear part can move relative to the pylon while maintaining connection, but the device complexity increases due to additional joint mechanisms
Solution Approach 1:
The joints with pivot axes parallel to the engine axis serve multiple functions: they enable the rear part to move relative to the pylon, maintain the suspended connection during malfunctions, and accommodate thermal expansion and contraction. This multi-functionality reduces the need for additional specialized mechanisms, managing complexity while providing adaptability.
Data Source
AI summary
A propulsion unit comprising an engine, a pylon, an engine mount system which connects a front part of the engine and the pylon, in addition to a suspension system which connects the pylon and a rear part of the engine which is offset toward the rear end of the engine relative to the engine mount system.