Adjustable Angle-of-Attack Sensor Damper for Consistent Response
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Solution Overview
Problem
Traditional angle of attack sensors face variations in dynamic response due to mechanical tolerances and fluid viscosity, limiting precise damping performance.
Innovation Solution
A damper assembly with a rotor having a conical portion and a damper housing with a tapered interior surface, allowing axial adjustment of the gap between the rotor and the housing, and a locking mechanism to fix the desired gap width, thereby fine-tuning damping performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fixed-gap dampers are used in angle of attack sensors, then manufacturing is simpler, but dynamic response varies due to mechanical tolerances and fluid viscosity
Solution Approach 1:
The damper structure transitions from a fixed-gap design to an adjustable-gap design, allowing the gap between the rotor and damper housing to be modified. This enables the damper to adapt its damping characteristics to compensate for variations in mechanical tolerances and fluid viscosity, thereby improving dynamic response consistency without requiring complete redesign of the entire sensor system.
2Manufacturing precision
If adjustable gap mechanism is added to the damper, then damping performance can be fine-tuned, but device complexity increases
Solution Approach 1:
The invention modifies the physical parameter of the gap width between the rotor and damper housing, allowing continuous adjustment of this critical dimension. By changing this single parameter, the damping performance can be precisely tuned to account for manufacturing tolerances and fluid property variations, achieving high manufacturing precision in the functional performance without requiring complex multi-parameter control systems.
3Reliability
If dampers are manufactured with tight tolerances to reduce variation, then dynamic response consistency improves, but manufacturing cost increases
Solution Approach 1:
Rather than manufacturing dampers with tight tolerances to achieve consistency, the invention provides a post-manufacturing adjustment mechanism that allows the gap to be modified after assembly. This dynamic adjustment capability enables performance consistency to be achieved through calibration rather than through costly tight-tolerance manufacturing processes.
4Measurement precision
If the damper housing is made adjustable axially with respect to the rotor, then gap width can be controlled, but the locking mechanism adds complexity
Solution Approach 1:
The locking mechanism is designed to secure the damper housing at the desired axial position after adjustment has been made. This preliminary locking action maintains the precisely adjusted gap width during sensor operation, ensuring measurement precision is preserved without requiring continuous active control or complex adjustment mechanisms during use.
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
This solution enables precise control over damping characteristics, improving the dynamic response of the angle of attack sensor by accounting for implicit variations, enhancing accuracy and adaptability, and reducing costs through customizable and interchangeable components.
Implementation Method 1
Dampers are utilized in angle of attack sensors to assist with proper functioning of the angle of attack sensor. Tolerances among components within the damper result in implicit variation among dampers. Such variation results in variations in the angle of attack sensor's dynamic response, or the vane's response to the removal of deflecting forces.
Data Source
AI summary
A damper assembly for an angle of attack sensor includes a rotor including a conical portion, a damper housing in which the rotor is positioned, the damper housing being configured to be adjusted axially with respect to the rotor and including a tapered interior surface that matches a profile of the conical portion, and a locking mechanism adjacent the damper housing.