Mobile Rotor Blade Pressure Tool With Inflatable Bladder Positioning
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Solution Overview
Problem
Current rotor blade repair methods, especially in the field, face challenges with applying consistent pressure and heat efficiently without causing bending moments or requiring multiple operators, particularly when dealing with foreign object damage and wear due to frictional forces.
Innovation Solution
A mobile pressure tool with a support system featuring a first and second inflatable bladder assembly, an activation mechanism, and a fluid delivery system, allowing for adjustable pressure and heat application directly to the rotor blade surface, eliminating the need for bending moments and reducing operator dependency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bladder tools are moved into place with a crane and multiple operators position them, then pressure can be applied to the rotor blade, but the operational complexity and number of operators required increases
Solution Approach 1:
The pressure tool is divided into a mobile support system that can be independently positioned and a bladder assembly that can be independently manipulated. This segmentation allows the mobile support system to be moved as a single unit to the repair location, eliminating the need for crane assistance and multiple operators to position separate components.
Solution Approach 2:
The mobile support system acts as an intermediary between the operator and the rotor blade. It provides a stable, movable platform that positions the bladder assembly precisely at the repair location without requiring direct manual positioning of heavy components or external crane equipment.
2Manufacturing precision
If a vacuum bag is used to apply pressure in field repairs, then pressure can be applied to the rotor blade, but the consistency and control of pressure application is reduced
Solution Approach 1:
The system uses a fluid delivery system with inflatable bladders to apply pressure. This pneumatic/hydraulic mechanism provides precise, controllable, and consistent pressure application through fluid pressure regulation, eliminating the pressure inconsistencies associated with vacuum bag methods while maintaining field repair adaptability.
3Reliability
If pressure and heat are applied to activate adhesive for repair patches, then repair effectiveness is improved, but the risk of causing bending moments or damage increases
Solution Approach 1:
The mobile support system provides a stable, level platform that distributes the weight and pressure loads evenly across the rotor blade repair area. This equipotential support prevents bending moments and uneven stress distribution that could occur with improvised or unstable positioning methods, enabling safe application of pressure and heat for adhesive activation.
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
Enables efficient and consistent pressure and heat application to rotor blades, facilitating effective repair and manufacturing processes without the need for additional support structures, thus improving repair efficiency and reducing operational complexity.
Implementation Method 1
A fluid delivery system is operable to direct a fluid into each of the first inflatable bladder and the second inflatable bladder
Implementation Method 2
The pressure and/or heat to activate an adhesive and secure a repair patch to a surface of the rotor blade
Data Source
AI summary
A pressure tool for rotor blade repair including a mobile support system including a support surface, a first bladder support assembly including a first inflatable bladder fixedly mounted to the support surface, a second bladder support assembly including a second inflatable bladder pivotally mounted relative to the support surface, and an activation mechanism operatively coupled to the second bladder support assembly. The activation mechanism is operable to selectively shift the second bladder support assembly relative to the first bladder support assembly. A fluid delivery system is operable to direct a fluid into each of the first inflatable bladder and the second inflatable bladder.