Composite Turbine Blade Shield Balancing by Adjustable Edge Mass
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Solution Overview
Problem
Existing methods for manufacturing turbine engine vanes fail to adjust the radial moment weight of individual blades effectively, necessitating balancing of the complete module using flyweights, which is inefficient and costly.
Innovation Solution
A method for manufacturing composite vanes with a reinforcing shield that allows adjustment of the radial moment weight by varying the shield's position and removing excess portions, enabling individual blade balancing before module assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the complete module is balanced using flyweights, then the module balancing is achieved, but the process is inefficient and costly
Solution Approach 1:
The invention divides the balancing problem from module-level to blade-level by attaching adjustable mass elements directly to individual blades. This segmentation allows each blade to be balanced independently during manufacturing, eliminating the need for complex module-level flyweight balancing and significantly improving productivity while maintaining reliability.
2Ease of manufacture
If the shield is positioned at fixed locations, then the manufacturing process is simple, but the radial moment weight cannot be adjusted
Solution Approach 1:
The invention transforms the static shield positioning into a dynamic system where the shield can be positioned at multiple locations along the blade edge. The shield's position becomes a variable parameter that can be adjusted to achieve different radial moment weights, providing adaptability while maintaining manufacturing simplicity through standardized attachment mechanisms.
3Manufacturing precision
If individual blade balancing is implemented, then the radial moment weight precision is improved, but the device complexity increases
Solution Approach 1:
The invention applies local quality by concentrating the balancing function specifically at the blade level rather than requiring complex module-level mechanisms. The adjustable mass elements and positioning systems are localized to each blade, providing high precision radial moment weight control without increasing overall device complexity, as each blade becomes a self-contained balancing unit.
Data Source
AI summary
A method for manufacturing a blade made of a composite material for a turbine engine, in particular a turbine engine of an aircraft, wherein a reinforcing shield is attached to one edge of an airfoil, the shield having a generally elongated shape along an elongation axis of the airfoil. The shield includes at least one excess dimension so as to be able to adjust the moment weight of the blade along the axis according to the position of the shield on the edge of the axis, and the method includes a step for removing a surplus portion of the shield so s to balance the blade.