Battery-Based Vibration Attenuation for Aircraft Airframes
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Solution Overview
Problem
Aircraft experience vibrations due to mechanical components and airflow, which existing vibration attenuation systems like tuned mass absorbers often address inadequately due to their weight, adding unnecessary payload and complexity.
Innovation Solution
Incorporating batteries coupled with elastic devices into the aircraft's vibration attenuation system, where the batteries oscillate to attenuate vibratory forces, providing a lightweight solution that adjusts stiffness and mass to target specific frequencies, thus reducing resonance and vibration amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If tuned mass absorbers or Frahms are used to mitigate vibrations, then vibration attenuation is improved, but aircraft weight increases
Solution Approach 1:
The patent applies multi-functionality by using batteries that serve dual purposes: providing electrical power to the aircraft systems and acting as vibration attenuation masses. The same battery components that are already required for power supply are utilized as tuned mass absorbers, eliminating the need for separate vibration mitigation equipment and avoiding additional weight.
Solution Approach 2:
The invention merges the power supply system and vibration attenuation system into a single integrated solution. The batteries are coupled with elastic devices to form a combined system that simultaneously performs electrical power storage and mechanical vibration absorption, reducing overall system weight by eliminating redundant components.
2Object-affected harmful factors
If traditional vibration attenuation systems are added, then vibration mitigation is improved, but device complexity increases
Solution Approach 1:
The patent reduces system complexity by making existing battery components serve multiple functions. The batteries, elastic devices, and mounting structures are designed to simultaneously handle power supply and vibration attenuation, eliminating the need for separate complex vibration isolation systems and simplifying the overall aircraft design.
Solution Approach 2:
The vibration attenuation system is self-configuring and requires minimal external control. The elastic devices and batteries automatically adjust to provide vibration mitigation based on the aircraft's operating conditions, reducing the need for complex control systems, sensors, and active management infrastructure.
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 approach effectively attenuates vibrations without adding dead weight, maintaining the aircraft's payload capacity and reducing the risk of resonance-induced damage, by using batteries and elastic devices to oscillate and absorb vibratory forces based on tuned stiffness and mass configurations.
Implementation Method 1
The elastic devices are configured to attenuate the vibratory force based on facilitating oscillation of the two or more batteries
Implementation Method 2
The elastic devices are configured to attenuate the vibratory force based on facilitating oscillation of the two or more batteries
Implementation Method 3
The elastic devices are configured to attenuate the vibratory force based on facilitating oscillation of the two or more batteries
Data Source
AI summary
In some examples, an aircraft comprises an airframe, a rotor system coupled to the airframe, and a vibration attenuation system. The rotor system is operable to exert a vibratory force on the airframe. The vibration attenuation system comprises two or more batteries and elastic devices. The two or more batteries are operable to supply power to the rotor system. The elastic devices coupled to the two or more batteries and the airframe. The elastic devices are configured to attenuate the vibratory force based on facilitating oscillation of the two or more batteries. In other examples, a method comprises coupling elastic devices to two or more batteries and an airframe of an aircraft. The elastic devices receiving a vibratory force via the airframe and attenuate the vibratory force based on facilitating oscillation of the two or more batteries.