Lever Arm Testing Device for Flight Actuator Secondary Channel
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Solution Overview
Problem
There is a lack of a simple and effective solution for testing the operation of secondary channel force detection in flight control actuators, particularly during periodic ground verification of aircraft, and existing systems are not suitable for easy implementation on aircraft.
Innovation Solution
A device comprising a lever arm pivotally mounted on a support that can be mechanically fixed to a structure independent of the secondary track, allowing for the application of tensile and/or compressive forces to the secondary track, facilitating testing of the force detection mechanism without causing malfunctions or safety risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex testing system is used to test secondary channel force detection, then measurement precision is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The invention extracts the essential testing function from complex existing systems by using a simple lever arm that directly applies force to the secondary channel attachment point. The lever arm is pivotally mounted on the primary channel structure, allowing direct force application without complex mechanisms, thereby achieving accurate force detection testing with minimal device complexity
Solution Approach 2:
The lever arm acts as an intermediary between the tester and the secondary channel force detection system. By applying force through the lever arm at a known distance from the pivot point, the system creates a controlled and measurable force application mechanism that simplifies the testing process while maintaining measurement accuracy
2Ease of operation
If a minimally invasive testing device is used, then ease of operation is improved, but measurement precision may deteriorate
Solution Approach 1:
The lever arm is pre-configured with a specific length and pivot point position that establishes a known mechanical advantage ratio. This preliminary design allows the tester to apply a manageable force that is automatically scaled to the appropriate test force level, achieving both ease of operation and measurement precision without requiring complex measurement equipment
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 straightforward and minimally invasive testing of secondary channel force detection on aircraft, ensuring maximum safety and ease of maintenance by allowing for accurate verification of force recovery mechanisms without errors or omissions.
Implementation Method 1
a lever arm which by tilting allows the tool to be supported on said zone so that it exerts a tensile and/or compressive force on the secondary track
Data Source
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AI summary
The invention relates to a device for testing means for detecting the loading of the secondary channel of a flight control actuator of the type comprising a primary channel and a secondary channel capable of taking over the force of the primary channel in the event of its failure, characterized in that it comprises a tool (33) capable of bearing on at least one area of at least one element of the secondary channel, as well as a lever arm (30) which by tilting allows the tool to bear on said area so that it exerts a tensile and/or compressive force on the secondary channel, said lever arm (30) being pivotally mounted on a support (31) capable of being fixed on a structure mechanically independent of the secondary channel.