Permanent Magnet Damping for Aircraft Luggage Bin Lighting
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Solution Overview
Problem
Aircraft luggage bins face challenges with hydraulic dampers wearing out quickly due to high precision requirements and the need for lighting without incurring additional weight or power waste, as hydraulic dampers dissipate energy as heat and require maintenance.
Innovation Solution
Implementing a permanent magnet damper system that generates electrical power during the opening of the luggage bin, stores it for lighting, and dissipates remaining power when closed, using a capacitor or battery for energy storage and a resistor for dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic dampers are used to control the opening speed of the luggage bin, then the damping function is achieved, but the dampers wear out quickly due to high precision requirements and O-ring wear
Solution Approach 1:
The patent replaces the hydraulic damper system with a permanent magnet-based electromagnetic damping system. This substitution eliminates the mechanical wear components (O-rings, seals, precision machined surfaces) by using electromagnetic fields for damping, thereby significantly improving reliability and service life while maintaining the speed control function.
Solution Approach 2:
The permanent magnet damper generates its own electrical power through electromagnetic induction during the bin opening process, eliminating the need for external power sources or complex hydraulic fluid systems. The system serves itself by converting mechanical energy directly into electrical energy for lighting and control functions.
2Speed
If hydraulic dampers are used for damping, then the opening speed is controlled, but energy is dissipated as heat which serves no useful purpose
Solution Approach 1:
The patent converts the harmful energy dissipation into a beneficial resource by using electromagnetic induction to generate electrical power from the kinetic energy of the opening bin. The energy that would have been wasted as heat in hydraulic dampers is now captured and used to power LED lighting and control circuits, turning a loss into a useful output.
Solution Approach 2:
The patent changes the energy conversion parameter from thermal dissipation (hydraulic) to electrical generation (electromagnetic). By altering the fundamental energy conversion mechanism, the system transforms wasted kinetic energy into storable electrical energy, fundamentally changing how energy is handled in the system.
3Illumination intensity
If lighting is added to the luggage bin, then visibility is improved, but running wires from the aircraft power supply adds weight and requires maintenance
Solution Approach 1:
The lighting system is powered by electricity generated from the damper's own operation during bin opening. The permanent magnet damper acts as both a damping device and a power generator, eliminating the need for heavy wiring to the aircraft's main power supply and reducing overall system weight while providing adequate illumination.
Solution Approach 2:
The permanent magnet damper serves multiple functions simultaneously: it provides speed control during opening, generates electrical power for lighting, and powers control circuits. This multi-functionality eliminates the need for separate power supply systems, reducing weight and complexity while achieving the lighting objective.
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 permanent magnet damper system provides reliable lighting and damping without extra weight or maintenance, offering improved reliability and energy efficiency by converting kinetic energy into electrical power for illumination and controlling the opening speed.
Implementation Method 1
a permanent magnet (PM) damper connected to a panel (e.g., a door of an aircraft luggage bin), the speed of opening of the panel, while the panel is opened. The method further comprises generating, by the PM damper, electrical power, during the opening of the panel.
Implementation Method 2
damping, by a permanent magnet (PM) damper connected to a panel, the speed of opening of the panel
Data Source
AI summary
Systems, methods, and apparatus for permanent magnet damping and generated light are disclosed. In one or more embodiments, a method for damping and generating light comprises damping, by a permanent magnet (PM) damper connected to a panel (e.g., a door of an aircraft luggage bin), the speed of opening of the panel, while the panel is opened. The method further comprises generating, by the PM damper, electrical power, during the opening of the panel. Also, the method comprises storing the electrical power in an electrical power storage unit, such as a capacitor or a battery. In addition, the method comprises powering, by using the stored electrical power, lighting, such as a lighting emitting diode (LED). Further, the method comprises dissipating any remaining electrical power of the electrical power, which is stored in the electrical power storage unit, when the panel is closed.