Static Rotor Blade Balancing Tool Pivot Mechanism
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Solution Overview
Problem
Aircraft rotor blade assemblies often exhibit variations in weight and weight distribution due to their component assemblies, leading to unbalanced conditions that result in excessive vibration and potential failure during operation.
Innovation Solution
A static rotor blade assembly balancing tool featuring a vertical rod with a tip and a sleeve having a bore terminating at a socket, which forms a pivot connection to support the rotor blade assembly, allowing for precise balancing by ensuring the sleeve settles in a level position, enabling the detection and correction of unbalanced conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rotor blades are manufactured with component assemblies, then manufacturing flexibility and adaptability are improved, but weight and weight distribution variations increase leading to unbalanced conditions
Solution Approach 1:
The patent applies parameter changes by adjusting the weight distribution of rotor blade components during assembly. Different component weights and positions are selected and adjusted to achieve proper balance, transforming the fixed weight issue into a可调 parameter that can be optimized for each specific assembly configuration
Solution Approach 2:
The patent implements preliminary action by performing static balancing measurements and adjustments before the rotor blade assembly enters operation. Weight adjustments are made in advance during manufacturing or maintenance, preventing vibration problems before they occur during flight operations
2Measurement precision
If static balancing tools with pivot connections are used, then balancing precision is improved, but device complexity increases
Solution Approach 1:
The balancing tool is segmented into distinct functional components: a support structure, a pivot connection mechanism, and a measurement indicator system. This segmentation allows each component to be optimized independently while maintaining overall simplicity, with the pivot connection serving as a separate adjustable element that enhances precision without complicating the entire device
Solution Approach 2:
The patent introduces a pivot connection as an intermediary element between the support structure and the rotor blade assembly. This intermediary component facilitates precise angular positioning and measurement while isolating the complexity of the balancing mechanism from both the support structure and the rotor blade, thereby improving measurement precision without proportionally increasing overall device 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 tool effectively balances rotor blade assemblies by minimizing friction and detecting unbalanced conditions, preventing vibration and potential failure by ensuring the rotor blade assembly remains stable and level, thereby extending its operational lifespan.
Implementation Method 1
the sleeve is balanced to settle in a level position with a vertical axis of the sleeve coaxial with the vertical axis of the rod
Data Source
AI summary
An exemplary static rotor blade assembly balancing tool includes a vertical rod having a top end with a tip located at the top end on a vertical axis of the rod and a sleeve having a bore terminating at a socket, in use the rod is disposed in the bore and the tip and the socket form a pivot connection where the sleeve is balanced to settle in a level position with a vertical axis of the sleeve coaxial with the vertical axis of the rod, and the sleeve has an outer profile configured to mount a hub of a rotor blade assembly.