Turbofan Splitter Fairing End Element Segmentation
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Solution Overview
Problem
Existing splitter fairings in turbofan engines are difficult to maintain and repair due to their design, which complicates access to components located inside or above/below the fairing, and they must balance aerodynamic efficiency with potential bursting or fire-proof requirements.
Innovation Solution
A splitter fairing with a separate, lighter end element having a V-shaped or triangular cross section for aerodynamic advantage, which can be easily attached and detached using a self-acting locking mechanism, allowing for tool-free mounting and simplified access to internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the splitter fairing is designed as a single integrated component for structural strength and fire-proof requirements, then structural integrity is improved, but maintenance and repair access becomes difficult
Solution Approach 1:
The splitter fairing is divided into multiple segments: a stationary receiving body and a movable end element that can be detached. This segmentation allows the receiving body to maintain structural integrity while the end element can be removed for maintenance access to components behind it.
2Reliability
If the splitter fairing is designed with heavy structural material for bursting resistance, then reliability is improved, but weight increases
Solution Approach 1:
The fairing is segmented into a heavy receiving body for structural strength and a lighter end element. This allows the critical structural portion to be robust while the aerodynamic end element can be optimized for lower weight.
Solution Approach 2:
Different parts of the fairing have different material properties: the receiving body uses heavy, fire-proof material for reliability, while the end element uses lighter material optimized for aerodynamics and weight reduction.
3Strength
If the end element is integrated into the receiving body, then structural strength is improved, but ease of manufacture decreases
Solution Approach 1:
The fairing is divided into manufacturable segments that can be produced separately using optimized processes for each component, then assembled using standardized locking mechanisms.
Solution Approach 2:
The locking mechanism is designed to automatically secure the end element to the receiving body without requiring additional fastening operations, making assembly self-completing and simplifying manufacturing.
4Reliability
If the locking mechanism requires tools for attachment, then reliability of connection is improved, but ease of operation decreases
Solution Approach 1:
The locking mechanism is designed to automatically engage and secure the end element to the receiving body without requiring tools or additional fastening operations, making the mounting process simple while maintaining reliable connection.
Data Source
AI summary
A turbofan engine including a core engine and at least one fan by means of which fluid is guided to a primary flow channel for the core engine as well as to a secondary flow channel of the turbofan engine, wherein the secondary flow channel is provided for an outer fluid flow that is guided past the core engine, and at least one splitter fairing arranged inside the secondary flow channel around which the fluid flow is flowing during operation of the turbofan engine, which cases at least one component of the turbofan engine that is guided radially through the secondary flow channel, and which has an end element with a leading edge section that is facing towards the fluid flow and/or a trailing edge section that is positioned in the flow direction of the fluid flow.