METHOD FOR MANUFACTURING A BLADE MADE OF COMPOSITE MATERIAL COMPRISING A TIGHTENING ELEMENT
The direct integration of fiber sheets with wavy or toothed edges into the fiber preform during resin densification forms a single-piece clamping element, addressing the complexity and cost issues of turbomachine blade manufacturing, enhancing mechanical strength and noise reduction in composite material blades.
Patent Information
- Application Number
- FR2024003046
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2044-03-26
AI Technical Summary
The manufacture of turbomachine blades made of composite material with integrated clamping elements is complex, costly, and prone to damage, while existing noise reduction methods like serrations on trailing edges are difficult to integrate and maintain, especially in unducted propellers, requiring improved integration and robustness.
A method involving the direct integration of fiber sheets with wavy or toothed edges into the fiber preform during the resin densification process to form a single-piece clamping element, ensuring robustness and ease of production, particularly by using a composite material for both the clamping element and the blade.
This method facilitates the integration of serration elements, enhances mechanical strength, reduces manufacturing complexity and costs, and minimizes material loss, while maintaining a reasonable mass and facilitating repair, thus improving noise reduction and operational reliability.