Airfoil Tip Bonding via Interlocking Features
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Solution Overview
Problem
The assembly of airfoils, particularly the alignment and bonding of tip and body portions, is challenging due to differing loads and temperatures, often requiring specialized equipment and risking misalignment and failure during service life.
Innovation Solution
A method involving the deposition and shaping of a bonding material with specific features on the tip portion to interlock with corresponding features on the body portion, facilitating precise alignment and bonding without the need for specialized equipment, using techniques like EDM or ECM to form protuberances and recesses that mirror the body portion's features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tip portion and body portion are assembled separately to withstand different loads and temperatures, then the airfoil can operate under varying conditions, but the alignment process requires specialized equipment and increases the risk of misalignment
Solution Approach 1:
The bonding material is shaped to form features that automatically align the tip portion with the body portion during assembly. The interlocking features create self-aligning geometry that guides proper positioning without requiring external alignment equipment or complex procedures.
Solution Approach 2:
A bonding material serves as an intermediary element between the tip portion and body portion. This bonding material includes shaped features that facilitate alignment and coupling, mediating the connection between the two components and enabling assembly without specialized equipment.
2Manufacturing precision
If the tip portion is precisely aligned on the body portion using specialized equipment, then misalignment risk is reduced, but assembly time and cost increase
Solution Approach 1:
The bonding material's shaped features create self-aligning geometry that automatically positions the tip portion correctly on the body portion. This eliminates the need for time-consuming alignment procedures and specialized equipment while maintaining high precision through the interlocking feature geometry.
Solution Approach 2:
The bonding material is pre-shaped to include alignment features before assembly. This preliminary preparation of the bonding material ensures that when assembly occurs, the alignment is achieved automatically through the pre-configured interlocking features, reducing assembly time and eliminating the need for specialized alignment equipment.
3Manufacturing precision
If clamping is used to hold the tip portion in position during assembly, then alignment is maintained, but the process requires specialized equipment and increases complexity
Solution Approach 1:
The interlocking features of the bonding material create self-holding geometry that maintains positioning accuracy without requiring external clamping devices. The shaped bonding material inherently holds the tip portion in the correct position through its interlocking feature geometry, eliminating the need for clamps or specialized positioning equipment.
Solution Approach 2:
The bonding material acts as an intermediary that provides both alignment and holding functions. Its shaped features create mechanical interlocking that maintains positioning accuracy during and after assembly, replacing the need for separate clamping mechanisms and simplifying the overall assembly process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method reduces assembly time and cost, ensures precise alignment and bonding, decreases the risk of bond failures, and allows for the coupling of airfoils with different properties, while simplifying the open-tip casting process.
Implementation Method 1
depositing a bonding material on a first end of the tip portion
Data Source
AI summary
A method of assembling an airfoil includes depositing a bonding material on a first end of the tip portion and shaping the bonding material to form a first plurality of features. The first plurality of features correspond to a second plurality of features on a second end of the body portion. The method also includes positioning the first end relative to the second end such that the first plurality of features and the second plurality of features interlock. The method further includes coupling the first end of the tip portion to the second end of the body portion.