Co-bonded Electroformed Abrasion Strip for Rotorcraft
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current metallic leading edge erosion/abrasion protection devices for rotorcraft aerodynamic surfaces face challenges in achieving a continuous erosion/abrasion-resistant surface and adequate structural strength due to the use of multi-piece designs with adhesive bonds, which can lead to fatigue failures at the bond connections.
Innovation Solution
A co-bonded electroformed abrasion strip is created by performing an electro-deposition process to integrate a second metallic section onto a first metallic section with an overlap region, forming a unitary, inseparable strip that conforms to complex geometric profiles, eliminating the need for adhesive bonds and enhancing structural reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If multi-piece designs with adhesive bonds are used to create abrasion protection devices, then complex geometric profiles can be achieved, but structural strength and reliability deteriorate due to fatigue failures at bond connections
Solution Approach 1:
The patent merges multiple separate metallic sections into a single unitary structure through electroformed bonding. The overlap region where sections join is created by electrodepositing metal onto the first section to form the second section, creating a molecular-level bond that eliminates adhesive bonds and mechanical fasteners. This resolves the contradiction by achieving both complex geometric profiles through multi-section construction and high reliability through seamless electroformed joints that prevent fatigue failures.
2Adaptability or versatility
If multi-piece designs with adhesive bonds are used, then various materials can be combined, but continuous erosion/abrasion resistant surface deteriorates due to discontinuities at bond connections
Solution Approach 1:
The electroformed bonding process merges different metallic sections into a continuous surface by depositing metal at the overlap region. This creates a seamless transition between sections with no gaps, steps, or adhesive layers, maintaining surface continuity while allowing different materials to be combined. The molecular-level bonding ensures the abrasion-resistant surface remains uninterrupted across material boundaries.
3Adaptability or versatility
If mechanically formed or machined pieces are joined with electroformed pieces, then simple and complex geometries can be combined, but manufacturing complexity increases due to multiple joining processes
Solution Approach 1:
The patent extracts the joining function from separate mechanical operations and integrates it into the electroforming process itself. Instead of mechanically forming pieces and then separately joining them with adhesives or fasteners, the electroformed bonding process performs both formation and joining in one integrated operation. The overlap region is created by electrodepositing metal onto the first section to form the second section, eliminating the need for separate joining processes and reducing manufacturing complexity.
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
The solution provides a continuous erosion/abrasion-resistant surface with improved structural strength and reliability, reducing the risk of fatigue failures and maintaining fluid dynamic behavior by eliminating discontinuities and misalignments in the abrasion strip assembly.
Implementation Method 1
creating a second metallic section onto the overlap region on the one end of the first metallic section by performing a first electro-deposition process on the one end of the first metallic section
Implementation Method 2
the second electro-deposition process comprises an electroplating process
Data Source
AI summary
A system, method, and apparatus for a co-bonded electroformed abrasion strip are disclosed. A disclosed method for making a unitary abrasion strip for a fluid dynamic surface includes manufacturing or identifying a first metallic section having an overlap region on a first end of the first metallic section. The method further includes manufacturing or identifying an overlap region disposed on the first end of the first metallic section by preparing the first end of the first metallic section. Also, the method includes creating a second metallic section onto the overlap region on the first end of the first metallic section by performing a first electro-deposition process on the first end of the first metallic section; where the first metallic section, the overlap region, and the second metallic section together form a unitary, inseparable abrasion strip for a fluid dynamic surface.