Aircraft Linkage Assembly With Torsion-Bar Servo Buffer
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Solution Overview
Problem
The rigid connection between the rudder surface and the servo in UAVs leads to swing vibrations and oscillation loads, causing fatigue and potential damage to the servo, affecting flight safety and stability.
Innovation Solution
A connecting rod assembly with torsion bars and straight rods, allowing for a movable connection between the servo and the rudder surface, absorbing oscillation energy and reducing shock loads through torsional deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid connection is used between the servo and rudder surface, then the steering force and torque are effectively transmitted, but the swing vibrations and oscillation loads cause fatigue damage and reduce the reliability of the servo
Solution Approach 1:
The patent changes the stiffness parameter of the connecting rod by introducing a torsion bar structure. The torsion bar reduces the axial stiffness of the connecting rod, allowing it to absorb oscillation energy and reduce shock loads transmitted to the servo, thereby improving servo reliability while maintaining effective force transmission.
Solution Approach 2:
The torsion bar acts as an intermediary element between the rigid connecting rod and the servo. It mediates the transmission of forces by providing torsional flexibility, filtering out high-frequency vibrations and oscillation loads while allowing the servo to respond to deliberate control inputs.
2Object-affected harmful factors
If the axial stiffness of the connecting rod is reduced to absorb oscillation energy, then the shock loads on the servo are reduced, but the buckling performance of the connecting rod may be compromised
Solution Approach 1:
The patent carefully adjusts the torsional stiffness parameter of the torsion bar to achieve an optimal balance. By selecting appropriate torsional stiffness, the connecting rod can reduce axial stiffness to absorb oscillation energy and reduce shock loads, while maintaining sufficient buckling resistance through the geometric and material properties of the torsion bar and straight rod configuration.
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 torsion bar structure reduces shock loads on the servo, extends its service life, and maintains flight stability by minimizing axial deformation and buckling, while being simple to manufacture.
Implementation Method 1
The torsion bar in the present application can reduce the bending deformation of the connecting rod when compressed, and appropriately reduce the axial stiffness
Data Source
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AI summary
The present invention belongs to the field of aircraft, disclosing a connecting rod assembly, servo buffer structure and aircraft. The connecting rod assembly includes a connecting rod body, which has a first end and a second end; The first and second ends are located on either side of the connecting rod body; The first end fixed connection has a first connecting member, and the first connecting member is actively connected to the first fixed seat; The second end fixed connection has a second connecting member , and the second connecting member is movably connected to the second fixed seat. The torsion rod of the present invention can reduce the bending deformation of the connecting rod during compression, and appropriately reduce the axial stiffness, so as not to greatly reduce the buckling performance of the connecting rod, and the structure is simple and easy to manufacture.